| |
| United States Patent
|
6,923,093 |
| Ullah |
August 2, 2005 |
Tool drive system
Abstract
A tool drive system for transferring rotational power from a
rotational tool, such as a drill or ratchet, to at least one input
drive shaft which then transfers the power to at least one output
drive shaft. The angle of at least one input drive shaft being
adjustable relative to at least one output shaft. The tool drive
system comprises a round housing with an angle adjuster attached to
the input shaft that assists in adjusting and locking the angle of
the input shaft relative to the output shaft in an almost circular
span. The input and output shafts may be positioned in a
user-selected gear ratio from the input to output shafts or vice
versa.
| Inventors: |
Ullah; Rizwan (I-8/3
Islamabad, PK) |
| Appl. No.:
|
10/696,887 |
| Filed: |
October 29, 2003 |
| Current U.S.
Class: |
81/57.26 |
| Current
International Class: |
B23Q
5/00 (20060101); B23Q 5/04 (20060101); B25B 017/00 () |
| Field of
Search: |
81/57.26,57,57.28,57.29 74/417 |
References Cited
[Referenced By]
U.S. Patent
Documents
Primary Examiner: Ackun, Jr.; Jacob K.
Attorney, Agent or Firm:
Stoneman Law Offices, Ltd. Stoneman; Martin L. Erlick;
Benjamin K.
Parent Case Text
CROSS-REFERENCE TO RELATED APPLICATION
The present application is related to prior provisional application
Serial No. 60/422,024, filed Oct. 29, 2002, entitled "TOOL DRIVE
SYSTEM", from which priority is claimed, the contents of which are
incorporated herein by this reference and are not admitted to be
prior art with respect to the present invention by the mention in
this cross-reference section.
Claims
What is claimed is:
1. A tool drive system comprising: a) at least one rotatable first
shaft, comprising at least one first gear, having at least one first
axis of rotation; b) at least one rotatable second shaft, comprising
at least one second gear, having at least one second axis of
rotation; and c) at least one movement transferer structured and
arranged to rotate said at least one rotatable second shaft when
said at least one rotatable first shaft is rotated; d) wherein said
at least one movement transferer further comprises i) at least one
connector structured and arranged to connect said at least one
rotatable first shaft and said at least one rotatable second shaft,
ii) at least one angle setter structured and arranged to set at
least one angle between said at least one first axis of rotation and
said at least one second axis of rotation, and iii) at least one
balancer structured and arranged to use opposed gear plates to
balance torque transfer between said at least one first gear and
said at least one second gear; e) wherein said at least one
rotatable first shaft further comprises at least two positively each
respective shaft comprising at least one first gear, having at least
one first axis of rotation; f) wherein said angle setter comprises a
positive lock structured and arranged to positively positionally
lock the at least one angle; g) wherein said at least one angle
setter comprises at least one housing structured and arranged to
positionally stabilize the at least one angle; h) at least one gear
plate comprising at least one first unique circular set of first
gear teeth on said at least one gear plate and at least one second
unique circular set of second gear teeth on said at least one sear
plate; and i) at least one gear positioner structured arid arranged
to position at least one of said at least one first gear and said at
least one second gear in a gear-tooth-locking relationship with a
user-selected one of said at least one first unique circular set of
first gear teeth on said at least one gear plate and said at least
one second unique circular set of second gear teeth on said at least
one gear plate.
2. A tool drive system comprising: a) at least one rotatable first
shaft, comprising at least one first gear, having at least one first
axis of rotation; b) at least one rotatable second shaft, comprising
at least one second gear, having at least one second axis of
rotation; and c) at least one movement transferer structured and
arranged to rotate said at least one rotatable second shaft when
said at least one rotatable first shaft is rotated; d) wherein said
at least one movement transferer further comprises i) at least one
connector structured and arranged to connect said at least one
rotatable first shaft and said at least one rotatable second shaft,
ii) at least one angle setter structured and arranged to set at
least one angle between said at least one first axis of rotation and
said at least one second axis of rotation, and iii) at least one
balancer structured and arranged to use opposed gear plates to
balance torque transfer between said at least one first gear and
said at least one second gear; e) at least one gear plate comprising
at least one first unique circular set of first gear teeth on said
at least one gear plate and at least one second unique circular set
of second gear teeth on said at least one gear plate; and f) at
least one gear positioner structured and arranged to position at
least one of said at least one first gear and said at least one
second gear in a gear-tooth-locking relationship with a
user-selected one of said at least one first unique circular set of
first gear teeth on said at least one gear plate and said at least
one second unique circular set of second gear teeth on at least one
gear plate; g) wherein said at least one angle setter comprises at
least one housing structured and arranged to positionally stabilize
the at least one angle.
3. A tool drive system comprising: a) at least one rotatable first
shaft, comprising at least one first gear, having at least one first
axis of rotation; b) at least one rotatable second shaft, comprising
at least one second gear, having at least one second axis of
rotation; and c) at least one movement transferer structured and
arranged to rotate said at least one rotatable second shaft when
said at least one rotatable first shaft is rotated; d) wherein said
at least one movement transferer further comprises i) at least one
connector structured and arranged to connect said at least one
rotatable first shaft and said at least one rotatable second shaft,
and ii) at least one angle setter structured and arranged to set at
least one angle between said at least one first axis of rotation and
said at least one second axis of rotation; and e) wherein said at
least one connector comprises at least one bar, having at least one
bar axis perpendicular to both said at least one first axis of
rotation and said at least one second axis of rotation, and f)
wherein both said at least one rotatable first shaft and said at
least one rotatable second shaft are rotatably mounted to said bar;
g) at least one gear plate comprising at least one first unique
circular set of first gear teeth on said at least one gear plate and
at least one second unique circular set of second gear teeth on said
at least one gear plate; and h) at least one gear positioner
structured and arranged to position at least one of said at least
one first gear and said at least one second gear in a
gear-tooth-locking relationship with a user-selected one of said at
least one first unique circular set of first gear teeth on said at
least one gear plate and said at least one second unique circular
set of second gear teeth on said at least one gear plate; i) wherein
said at least one angle setter comprises at least one housing
structured and arranged to positionally stabilize the at least one
angle.
4. A tool drive system comprising: a) at least one rotatable first
shaft, comprising at least one first gear, having at least one first
axis of rotation; b) at least one rotatable second shaft, comprising
at least one second gear, having at least one second axis of
rotation; and c) at least one movement transferer structured and
arranged to rotate said at least one rotatable second shaft when
said at least one rotatable first shaft is rotated; d) wherein said
at least one movement transferer further comprises i) at least one
connector structured and arranged to connect said at least one
rotatable first shaft and said at least one rotatable second shaft,
and ii) at least one angle setter structured and arranged to set at
least one angle between said at least one first axis of rotation and
said at least one second axis of rotation, and e) wherein said at
least one angle setter comprises at least one positive lock
structured and arranged to positively positionally lock the at least
one angle; f) at least one gear plate comprising at least one first
unique circular set of first gear teeth on said at least one gear
plate and at least one second unique circular set of second gear
teeth on said at least one gear plate; g) at least one gear
positioner structured and arranged to position at least one of said
at least one first gear and said at least one second gear in a
gear-tooth-locking relationship with a user-selected one of said at
least one first unique circular set of first gear teeth on said at
least one gear plate and said at least one second unique circular
set of second gear teeth on said at least one gear plate; h) wherein
said at least one angle setter comprises at least one housing
structured and arranged to positionally stabilize the at least one
angle.
5. The tool drive system according to claim 4 wherein: a) said at
least one housing comprises a circular periphery; b) said circular
periphery comprises a set of evenly-spaced teeth; c) at least one of
said at least one rotatable first shaft and at least one rotatable
second shaft comprises at least one shaft housing element comprising
at least one shaft housing tooth structured and arranged to fit
between a pair of said evenly-spaced teeth; and d) said at least one
shaft housing tooth is removably engagable with said evenly-spaced
teeth, wherein the user may set said at least one angle.
6. A tool drive system comprising, in combination: a) at least one
rotatable first shaft, comprising at least one first gear, having at
least one first axis of rotation; b) at least one rotatable second
shaft, comprising at least one second gear, having at least one
second axis of rotation; c) at least one movement transferer
structured and arranged to rotate said at least one rotatable second
shaft when said at least one rotatable first shaft is rotated; d) at
least one gear plate comprising at least one first unique circular
set of first gear teeth on said at least one gear plate and at least
one second unique circular set of second gear teeth on said at least
one gear plate; and e) at least one gear positioner structured and
arranged to position at least one of said at least one first gear
and said at least one second gear in a gear-tooth-locking
relationship with a user-selected one of said at least one first
unique circular set of first gear teeth on said at least one gear
plate and said at least one second unique circular set of second
gear teeth on said at least one gear plate; f) wherein said at least
one movement transferer further comprises i) at least one connector
structured and arranged to connect said at least one rotatable first
shaft and said at least one rotatable second shaft, and ii) at least
one angle setter structured and arranged to set at least one angle
between said at least one first axis of rotation and said at least
one second axis of rotation; and g) wherein said at least one angle
setter comprises at least one housing structured and arranged to
positionally stabilize the at least one angle.
7. The tool drive system according to claim 6 wherein: a) said at
least one gear plate comprises N unique circular sets of gear teeth
on said at least one gear plate; and b) said at least one gear
positioner permits a user-selected positioning of at least one of
said at least one first gear and said at least one second gear in a
gear-tooth-locking relationship with a user-selected one of said N
unique circular sets of gear teeth on said at least one gear plate;
c) wherein N is a whole number greater than one.
8. The tool drive system according to claim 7 wherein said at least
one angle setter comprises at least one positive lock structured and
arranged to positively positionally lock the at least one angle.
9. The tool drive system according to claim 8 wherein said at least
one rotatable first shaft further comprises a plurality of
circumferential grooves.
10. The tool drive system according to claim 9 wherein: a) said at
least one gear positioner comprises at least one spring-loaded
retractable-pin element structured and arranged to stabilize at
least one longitudinal position of said at least one rotatable first
shaft by entry into at least one said circumferential groove; b)
wherein at least one longitudinal position of at least one of said
at least one first gear and said at least one second gear may be
user selectable; and c) wherein a gear ratio may be user selected.
11. A tool drive system comprising: a) at least one rotatable first
shaft, comprising at least one first gear, having at least one first
axis of rotation; b) at least one rotatable second shaft, comprising
at least one second gear, having at least one second axis of
rotation; and c) at least one movement transferer structured and
arranged to rotate said at least one rotatable second shaft when
said at least one rotatable first shaft is rotated; d) wherein said
at least one movement transferer further comprises i) at least one
connector structured and arranged to connect said at least one
rotatable first shaft and said at least one rotatable second shaft,
ii) at least one angle setter structured and arranged to set at
least one angle between said at least one first axis of rotation and
said at least one second axis of rotation; and iii) at least one
balancer structured and arranged to use opposed gear plates to
balance torque transfer between said at least one first gear and
said at least one second gear; e) wherein said at least one angle
setter comprises at least one housing structured and arranged to
positionally stabilize the at least one angle; and f) wherein said
at least one housing comprises at least one positive lock structured
and arrange to positively positionally lock the at least one angle;
g) at least one gear plate comprising at least one first unique
circular set of first gear teeth on said at least one gear plate and
at least one second unique circular set of second gear teeth on said
at least one gear plate; and h) at least one gear positioner
structured and arranged to position at least one of said at least
one first gear and said at least one second gear in a
gear-tooth-locking relationship with a user-selected one of said at
least one first unique circular set of first gear teeth on said at
least one gear plate and said at least one second unique circular
set of second gear teeth on said at least one gear plate.
12. The tool drive system according to claim 11 wherein said at
least one connector comprises: a) at least one bar, having at least
one bar axis perpendicular to both said at least one first axis of
rotation and said at least one second axis of rotation; b) wherein
both said at least one rotatable first shaft and said at least one
rotatable second shaft are rotatably mounted to said bar.
13. The tool drive system according to claim 12 wherein said at
least one bar connects said housing with said at least one rotatable
first shaft and said at least one rotatable second shaft.
14. The tool drive system according to claim 13 wherein: a) said at
least one housing comprises a circular periphery; b) said circular
periphery comprises a set of evenly-spaced teeth; c) at least one of
said at least one rotatable first shaft and at least one rotatable
second shaft comprises at least one shaft housing element comprising
at least one shaft housing tooth structured and arranged to fit
between a pair of said evenly-spaced teeth; and d) said at least one
shaft housing tooth is removably engageable with said evenly-spaced
teeth, wherein the user may set said at least one angle.
Description
BACKGROUND
This invention relates to providing a tool drive system for
transferring rotational power from at least one first driver to at
least one second driver. More specifically, it relates to a tool
drive system providing at least one input and, at least one output,
drive shaft in which the angle of at least one drive shaft is
adjustable.
Typically, a user may utilize a tool drive system such as, for
example, a ratchet tool, to turn a tool attachment sized to remove a
fastener such as a bolt or screw. Typically, such fasteners are
located in a variety of angular positions relative to the drive
tool. Removal with a tool driver that has a fixed position can
result in difficult user positions and decreased leverage or limited
workspace. It would be advantageous to utilize a tool driver having
adjustable positions and a tool driver that would provide a choice
of gearing or leverage for the user.
OBJECTS OF THE INVENTION
A primary object and feature of the present invention is to provide
a tool drive system for adjusting the angles of an input shaft and
at least one output shaft.
It is a further object and feature of the present invention to
provide such a tool drive system that provides an increase in the
leverage of the user.
It is a further object and feature of the present invention to
assist in providing a speed differential between the input and
output of each respective drive element.
A further primary object and feature of the present invention is to
provide such a system that is efficient, inexpensive, and handy.
Other objects and features of this invention will become apparent
with reference to the following descriptions.
SUMMARY OF THE INVENTION
In accordance with a preferred embodiment hereof, this invention
provides a tool drive system comprising, in combination: at least
one rotatable first shaft comprising at least one first gear, having
at least one first axis of rotation; at least one rotatable second
shaft comprising at least one second gear, having at least one
second axis of rotation; and movement transfer means for rotating
such at least one rotatable second shaft when such at least one
rotatable first shaft is rotated; wherein such movement transfer
means further comprises connector means for connecting such at least
one rotatable first shaft and such at least one rotatable second
shaft, angle setting means for setting at least one angle between
such at least one first axis of rotation and such at least one
second axis of rotation, and balancing means for using opposed gear
plates to balance torque transfer between such at least one first
gear and such at least one second gear.
In accordance with another preferred embodiment hereof, this
invention provides a tool drive system comprising, in combination:
at least one rotatable first shaft comprising at least one first
gear, having at least one first axis of rotation; at least one
rotatable second shaft comprising at least one second gear, having
at least one second axis of rotation; and movement transfer means
for rotating such at least one rotatable second shaft when such at
least one rotatable first shaft is rotated; wherein such movement
transfer means further comprises connector means for connecting such
at least one rotatable first shaft and such at least one rotatable
second shaft, and angle setting means for setting at least one angle
between such at least one first axis of rotation and such at least
one second axis of rotation; wherein such connector means comprises,
at least one bar, having at least one bar axis perpendicular to both
such at least one first axis of rotation and such at least one
second axis of rotation, and wherein both such at least one
rotatable first shaft and such at least one rotatable second shaft
are rotatably mounted to such bar.
In accordance with yet another preferred embodiment hereof, this
invention provides a tool drive system comprising, in combination:
at least one rotatable first shaft comprising at least one first
gear, having at least one first axis of rotation; at least one
rotatable second shaft comprising at least one second gear, having
at least one second axis of rotation; and movement transfer means
for rotating such at least one rotatable second shaft when such at
least one rotatable first shaft is rotated; wherein such movement
transfer means further comprises connector means for connecting such
at least one rotatable first shaft and such at least one rotatable
second shaft, and angle setting means for setting at least one angle
between such at least one first axis of rotation and such at least
one second axis of rotation; and wherein such angle setting means
comprises positive locking means for positive positional locking of
the at least one angle.
In accordance with still another preferred embodiment hereof, this
invention provides a tool drive system comprising, in combination:
at least one rotatable first shaft comprising at least one first
gear, having at least one first axis of rotation; at least one
rotatable second shaft comprising at least one second gear, having
at least one second axis of rotation; and movement transfer means
for rotating such at least one rotatable second shaft when such at
least one rotatable first shaft is rotated; at least one gear plate
comprising at least one first unique circular set of first gear
teeth on such at least one gear plate and at least one second unique
circular set of second gear teeth on such at least one gear plate;
gear positioning means for positioning at least one of such at least
one first gear and such at least one second gear in a
gear-tooth-locking relationship with a user-selected one of such at
least one first unique circular set of first gear teeth on such at
least one gear plate and such at least one second unique circular
set of second gear teeth on such at least one gear plate; wherein
such movement transfer means further comprises connector means for
connecting such at least one rotatable first shaft and such at least
one rotatable second shaft, and angle setting means for setting at
least one angle between such at least one first axis of rotation and
such at least one second axis of rotation; and, wherein such angle
setting means comprises housing means for positionally stabilizing
the at least one angle.
In accordance with another preferred embodiment hereof, this
invention provides a tool drive system comprising, in combination:
at least one rotatable first shaft comprising at least one first
gear, having at least one first axis of rotation; at least one
rotatable second shaft comprising at least one second gear, having
at least one second axis of rotation; and movement transfer means
for rotating such at least one rotatable second shaft when such at
least one rotatable first shaft is rotated; wherein such movement
transfer means further comprises connector means for connecting such
at least one rotatable first shaft and such at least one rotatable
second shaft, angle setting means for setting at least one angle
between such at least one first axis of rotation and such at least
one second axis of rotation; and balancing means for using opposed
gear plates to balance torque transfer between such at least one
first gear and such at least one second gear; wherein such angle
setting means comprises housing means for positionally stabilizing
the at least one angle; and wherein such housing means comprises
positive locking means for positive positional locking of the at
least one angle.
In accordance with another preferred embodiment hereof, this
invention provides a tool drive system comprising, in combination:
at least one rotatable first shaft comprising at least one first
gear, having at least one first axis of rotation; at least one
rotatable second shaft comprising at least one second gear, having
at least one second axis of rotation; and at least one movement
transferer structured and arranged to rotate such at least one
rotatable second shaft when such at least one rotatable first shaft
is rotated; wherein such at least one movement transferer further
comprises at least one connector structured and arranged to connect
such at least one rotatable first shaft and such at least one
rotatable second shaft, at least one angle setter structured and
arranged to set at least one angle between such at least one first
axis of rotation and such at least one second axis of rotation, and
at least one balancer structured and arranged to use opposed gear
plates to balance torque transfer between such at least one first
gear and such at least one second gear.
It also provides such a system wherein such at least one rotatable
first shaft further comprises at least two first shafts, each
respective shaft comprising at least one first gear, having at least
one first axis of rotation. And, it provides such a system wherein
such angle setter comprises a positive lock structured and arranged
to positively positionally lock the at least one angle. Further, it
provides such a system wherein such at least one angle setter
comprises at least one housing structured and arranged to
positionally stabilize the at least one angle.
Even further, it provides such a system further comprising: at least
one gear plate comprising at least one first unique circular set of
first gear teeth on such at least one gear plate and at least one
second unique circular set of second gear teeth on such at least one
gear plate; and at least one gear positioner structured and arranged
to position at least one of such at least one first gear and such at
least one second gear in a gear-tooth-locking relationship with a
user-selected one of such at least one first unique circular set of
first gear teeth on such at least one gear plate and such at least
one second unique circular set of second gear teeth on such at least
one gear plate.
Still further, it provides such a system wherein such at least one
connector comprises, at least one bar, having at least one bar axis
perpendicular to both such at least one first axis of rotation and
such at least one second axis of rotation; wherein both such at
least one rotatable first shaft and such at least one rotatable
second shaft are rotatably mounted to such bar. And, it provides
such a system wherein such at least one angle setter comprises at
least one positive lock structured and arranged to positive
positionally lock the at least one angle. It also provides such a
system further comprising: at least one gear plate comprising at
least one first unique circular set of first gear teeth on such at
least one gear plate and at least one second unique circular set of
second gear teeth on such at least one gear plate; and at least one
gear positioner structured and arranged to position at least one of
such at least one first gear and such at least one second gear in a
gear-tooth-locking relationship with a user-selected one of such at
least one first unique circular set of first gear teeth on such at
least one gear plate and such at least one second unique circular
set of second gear teeth on such at least one gear plate; wherein
such at least one angle setter comprises at least one housing
structured and arranged to positionally stabilize the at least one
angle.
In accordance with another preferred embodiment hereof, this
invention provides a tool drive system comprising, in combination:
at least one rotatable first shaft comprising at least one first
gear, having at least one first axis of rotation; at least one
rotatable second shaft comprising at least one second gear, having
at least one second axis of rotation; and at least one movement
transferer structured and arranged to rotate such at least one
rotatable second shaft when such at least one rotatable first shaft
is rotated; wherein such at least one movement transferer further
comprises at least one connector structured and arranged to connect
such at least one rotatable first shaft and such at least one
rotatable second shaft, and at least one angle setter structured and
arranged to set at least one angle between such at least one first
axis of rotation and such at least one second axis of rotation;
wherein such at least one connector comprises, at least one bar,
having at least one bar axis perpendicular to both such at least one
first axis of rotation and such at least one second axis of
rotation, and wherein both such at least one rotatable first shaft
and such at least one rotatable second shaft are rotatably mounted
to such bar.
Additionally, it provides such a system wherein such at least one
angle setter comprises at least one positive lock structured and
arranged to positive positionally lock the at least one angle. And,
it provides such a system further comprising: at least one gear
plate comprising at least one first unique circular set of first
gear teeth on such at least one gear plate and at least one second
unique circular set of second gear teeth on such at least one gear
plate; at least one gear positioner structured and arranged to
position at least one of such at least one first gear and such at
least one second gear in a gear-tooth-locking relationship with a
user-selected one of such at least one first unique circular set of
first gear teeth on such at least one gear plate and such at least
one second unique circular set of second gear teeth on such at least
one gear plate; wherein such at least one angle setter comprises at
least one housing structured and arranged to positionally stabilize
the at least one angle.
In accordance with another preferred embodiment hereof, this
invention provides a tool drive system comprising, in combination:
at least one rotatable first shaft comprising at least one first
gear, having at least one first axis of rotation; at least one
rotatable second shaft comprising at least one second gear, having
at least one second axis of rotation; and at least one movement
transferer structured and arranged to rotate such at least one
rotatable second shaft when such at least one rotatable first shaft
is rotated; wherein such at least one movement transferer further
comprises at least one connector structured and arranged to connect
such at least one rotatable first shaft and such at least one
rotatable second shaft, and at least one angle setter structured and
arranged to set at least one angle between such at least one first
axis of rotation and such at least one second axis of rotation
wherein such at least one angle setter comprises at least one
positive lock structured and arranged to positive positionally lock
the at least one angle.
Moreover, it provides such a system further comprising: at least one
gear plate comprising at least one first unique circular set of
first gear teeth on such at least one gear plate and at least one
second unique circular set of second gear teeth on such at least one
gear plate; and at least one gear positioner structured and arranged
to position at least one of such at least one first gear and such at
least one second gear in a gear-tooth-locking relationship with a
user-selected one of such at least one first unique circular set of
first gear teeth on such at least one gear plate and such at least
one second unique circular set of second gear teeth on such at least
one gear plate; wherein such at least one angle setter comprises at
least one housing structured and arranged to positionally stabilize
the at least one angle.
Further, it provides such a system wherein: such at least one
housing comprises a circular periphery; such circular periphery
comprises a set of evenly-spaced teeth; at least one of such at
least one rotatable first shaft and at least one rotatable second
shaft comprises at least one shaft housing element comprising at
least one shaft housing tooth structured and arranged to fit between
a pair of such evenly-spaced teeth; and such at least one shaft
housing tooth is removably engagable with such evenly-spaced teeth,
wherein the user may set such at least one angle.
In accordance with still another preferred embodiment hereof, this
invention provides a tool drive system comprising, in combination:
at least one rotatable first shaft comprising at least one first
gear, having at least one first axis of rotation; at least one
rotatable second shaft comprising at least one second gear, having
at least one second axis of rotation; at least one movement
transferer structured and arranged to rotate such at least one
rotatable second shaft when such at least one rotatable first shaft
is rotated; at least one gear plate comprising at least one first
unique circular set of first gear teeth on such at least one gear
plate and at least one second unique circular set of second gear
teeth on such at least one gear plate; and at least one gear
positioner structured and arranged to position at least one of such
at least one first gear and such at least one second gear in a
gear-tooth-locking relationship with a user-selected one of such at
least one first unique circular set of first gear teeth on such at
least one gear plate and such at least one second unique circular
set of second gear teeth on such at least one gear plate; wherein
such at least one movement transferer further comprises at least one
connector structured and arranged to connect such at least one
rotatable first shaft and such at least one rotatable second shaft,
and at least one angle setter structured and arranged to set at
least one angle between such at least one first axis of rotation and
such at least one second axis of rotation, and wherein such at least
one angle setter comprises at least one housing structured and
arranged to positionally stabilize the at least one angle.
Further, it provides such a system wherein: such at least one gear
plate comprises N unique circular sets of gear teeth on such at
least one gear plate; and such at least one gear positioner permits
a user-selected positioning of at least one of such at least one
first gear and such at least one second gear in a gear-tooth-locking
relationship with a user-selected one of such N unique circular sets
of gear teeth on such at least one gear plate; wherein N is a whole
number greater than one. And, it provides such a system wherein such
at least one angle setter comprises at least one positive lock
structured and arranged to positive positionally lock the at least
one angle.
Still further, it provides such a system wherein such at least one
rotatable first shaft further comprises a plurality of
circumferential grooves. And, it provides such a system wherein:
such at least one gear positioner comprises at least one
spring-loaded retractable-pin element structured and arranged to
stabilize at least one longitudinal position of such at least one
rotatable first shaft by entry into at least one such
circumferential groove; wherein at least one longitudinal position
of at least one of such at least one first gear and such at least
one second gear may be user selectable; and wherein a gear ratio may
be user selected.
In accordance with yet another preferred embodiment hereof, this
invention provides a tool drive system comprising, in combination:
at least one rotatable first shaft comprising at least one first
gear, having at least one first axis of rotation; at least one
rotatable second shaft comprising at least one second gear, having
at least one second axis of rotation; and at least one movement
transferer structured and arranged to rotate such at least one
rotatable second shaft when such at least one rotatable first shaft
is rotated; wherein such at least one movement transferer further
comprises, at least one connector structured and arranged to connect
such at least one rotatable first shaft and such at least one
rotatable second shaft, at least one angle setter structured and
arranged to set at least one angle between such at least one first
axis of rotation and such at least one second axis of rotation, and
at least one balancer structured and arranged to use opposed gear
plates to balance torque transfer between such at least one first
gear and such at least one second gear; wherein such at least one
angle setter comprises at least one housing structured and arranged
to positionally stabilize the at least one angle; and wherein such
at least one housing comprises at least one positive lock structured
and arranged to positively positionally lock the at least one angle.
Even further, it provides such a system further comprising: at least
one gear plate comprising at least one first unique circular set of
first gear teeth on such at least one gear plate and at least one
second unique circular set of second gear teeth on such at least one
gear plate; and at least one gear positioner structured and arranged
to position at least one of such at least one first gear and such at
least one second gear in a gear-tooth-locking relationship with a
user-selected one of such at least one first unique circular set of
first gear teeth on such at least one gear plate and such at least
one second unique circular set of second gear teeth on such at least
one gear plate.
And, it provides such a system wherein such at least one connector
comprises, at least one bar, having at least one bar axis
perpendicular to both such at least one first axis of rotation and
such at least one second axis of rotation; wherein both such at
least one rotatable first shaft and such at least one rotatable
second shaft are rotatably mounted to such bar.
It also provides such a system wherein such at least one bar
connects such housing with such at least one rotatable first shaft
and such at least one rotatable second shaft. And, it provides such
a system wherein: such at least one housing comprises a circular
periphery; such circular periphery comprises a set of evenly-spaced
teeth; at least one of such at least one rotatable first shaft and
at least one rotatable second shaft comprises at least one shaft
housing element comprising at least one shaft housing tooth
structured and arranged to fit between a pair of such evenly-spaced
teeth; and such at least one shaft housing tooth is removably
engagable with such evenly-spaced teeth, wherein the user may set
such at least one angle.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of the tool drive system according to a
preferred embodiment of the present invention.
FIG. 2 is a side view, partially in section, of the tool drive
system of FIG. 1 illustrating the angle adjustability of the input
shaft according to a preferred embodiment of the present invention.
FIG. 3 is a side view of one-half of the tool drive system of FIG.
1.
FIG. 4 is a detailed view of the angle-adjuster assembly according
to a preferred embodiment of the present invention.
FIG. 5 is a detailed view of another angle-adjuster assembly
according to another preferred embodiment of the present invention.
FIG. 6 is a side view of the tool drive system of FIG. 1.
FIG. 7 is a sectional view through section 7--7 of FIG. 1.
FIG. 8 is a side view of one-half of the tool drive system
illustrating an embodiment comprising a gear adjusting mechanism
according to another preferred embodiment of the present invention.
FIG. 9 is a detail of the gear adjusting mechanism of FIG. 8
according to another preferred embodiment of the present invention.
FIG. 10 is an exploded view, partially in section, of the
adjustable-gear drive shaft assembly of the tool system of FIG. 8.
FIG. 11 is a sectional view through section 11--11 of FIG. 8 of a
button adjusting mechanism in a static position according to another
embodiment of the present invention.
FIG. 12 is another sectional view of the button adjusting mechanism
of FIG. 11 showing a different position of buttons in an operable
position.
FIG. 13 is a similar sectional view of another button adjusting
mechanism showing a one-button embodiment according to yet another
preferred embodiment of the present invention.
FIG. 14 is a side view of one-half of the tool drive system
illustrating a three-drive-shaft embodiment according to another
preferred embodiment of the present invention.
DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT OF THE INVENTION
Reference is now made to the drawings. FIG. 1 is a perspective view
of the tool drive system 100 according to a preferred embodiment of
the present invention. Preferably, the tool drive system 100
comprises a power transfer assembly 102, as shown. Preferably, the
power transfer assembly 102 comprises a housing 104, an input shaft
106, having an axis of rotation 101 and an output shaft 108 having
an axis of rotation 103, as shown (embodying herein movement
transfer means for rotating such at least one rotatable second shaft
when such at least one rotatable first shaft is rotated).
Preferably, the housing 104 is split into two halves, half 110 and
half 112. Preferably, each respective half 110 and half 112 are
connected, preferably by a connector 114 (embodying herein wherein
such movement transfer means further comprises connector means for
connecting such at least one rotatable first shaft and such at least
one rotatable second shaft; and embodying herein at least one
movement transferer structured and arranged to rotate such at least
one rotatable second shaft when such at least one rotatable first
shaft is rotated), which will be further described below.
Preferably, the input shaft 106 and the output shaft 108 each
comprise a tool connector 116, preferably a universal connector,
preferably a socket-drive connector such as, for example, a square
socket driver 117, as shown. Typical use in automotive situations
might be, for example, a 3/8-inch diameter square socket driver 117;
and typical sizes for the other elements of this invention will be
typically in relative proportion, as shown.
Upon reading the teachings of this specification, those with
ordinary skill in the art will now understand that, under
appropriate circumstances, considering such issues as economics,
user preference, etc., other universal tool connectors, may suffice.
For example, many tools such as powered drills have chucks that
provide for attachment of such drivers including socket-drivers,
screw-drivers, etc. Furthermore, air-tool drivers also provide for
assorted attachments. Even further, hand-powered tool drivers
provide for assorted attachments. Many of such rotational drivers
may be adapted to be used with the tool drive system 100 herein
disclosed.
Preferably, the input shaft 106 is adjustable in a plurality of
angular positions relative to the output shaft 108, preferably along
a single circumferential path, as shown. Preferably, the input shaft
106 comprises an angle-adjuster assembly 118 (embodying herein angle
setting means for setting at least one angle between such at least
one first axis of rotation and such at least one second axis of
rotation; and, embodying herein set at least one angle between such
at least one first axis of rotation and such at least one second
axis of rotation), as shown. Upon reading the teachings of this
specification, those with ordinary skill in the art will now
understand that, under appropriate circumstances, considering such
issues as economics, user preference, durability, etc., other
angle-adjusting arrangements, such as universal joints, etc., may
suffice.
FIG. 2 is a side view, partially in section, of the tool drive
system 100 of FIG. 1 illustrating the angle adjustability of the
input shaft 106 according to a preferred embodiment of the present
invention. FIG. 2 illustrates a preferred embodiment wherein the
input shaft 106 has a rotatable drill 120 attached to the input
shaft 106 and a socket 122 (for example, such as may be used to
remove a spark plug 124, as shown) attached to the output shaft 108.
Preferably, the input shaft 106 may be positioned in a plurality of
positions, such as illustrated by position A and position B. FIG. 2
illustrates such position as might be convenient to the user while
still producing a rotating output shaft 108 to turn, for example,
socket 122, as shown.
Preferably, in operation, a rotation of the input shaft 106 results
in a rotation of the output shaft 108. Upon reading the teachings of
this specification, those with ordinary skill in the art will now
understand that, under appropriate circumstances, considering such
issues as economics, user preference, materials, durability, etc.,
other rotation arrangements, may suffice. For example, the input
shaft 106 and output shaft 108 may be exchanged such that the input
shaft 106 is the output shaft (and adjustable) wherein the output
shaft 108 is the input shaft 106. Preferably, such exchange also
provides different gearing and leverage as will be further explained
below.
FIG. 3 is a side view of one-half 112 of the tool drive system 100
of FIG. 1. It is noted that, preferably, each respective half 110
and 112 is a mirror image of each other (except for the connection
of the input shaft 106 and output shaft 108). For illustration, FIG.
3 illustrates half 112 along with a center axle 126, a bar which
comprises connector 114 (see FIG. 7 for additional reference).
Preferably, half 112 comprises a first gear 130, preferably a ring
gear of a specific set radius extending from the center axis of the
central axle 126, as shown. Preferably, half 112 also comprises a
second gear 132, preferably concentric with the first gear 130,
preferably also a ring gear of a specific set radius extending from
the center axis of the central axle 126 and a set distance from
first gear 130, as shown. Preferably, both the first gear 130 and
second gear 132 are integral, as shown (also see FIG. 7) forming an
annular ring, with a central axis 127 and a set of gear teeth 131,
as shown. Preferably, the distance each concentric ring of first
gear 130 and second gear 132 are apart represents a specific gear
ratio. Preferably, the first gear 130 and second gear 132 are
rotatable around the central axle 126. Such connection will be
detailed further in FIG. 7 below.
Preferably, both the input shaft 106 and output shaft 108 are
connected to the central axle 126. Preferably, the input shaft 106
is rotatable around the central axle 126 along a plane parallel to
the concentric rings of first gear 130 and second gear 132, as
shown. Preferably, the central axle 126 is perpendicular to both a
central axis (axis of rotation 101) of the input shaft 106 and a
central axis (axis of rotation 103) of the output shaft 108, as
shown (embodying herein at least one bar, having at least one bar
axis perpendicular to both such at least one first axis of rotation
and such at least one second axis of rotation). Preferably, the
input shaft 106 is connected to the central axle 126 by a yoke 128,
(see FIG. 7). This arrangement embodies herein wherein both such at
least one rotatable first shaft and such at least one rotatable
second shaft are rotatably mounted to such bar. Upon reading the
teachings of this specification, those with ordinary skill in the
art will now understand that, under appropriate circumstances,
considering such issues as economics, user preference, material
selection, etc., other mounting arrangements, may suffice.
Preferably, in the illustrated embodiment of FIG. 3, the output
shaft 108 is connected to half 112 in a fixed position, preferably
using a collar 115, preferably a semi-circular collar, preferably
metal, preferably screwed or riveted to half 112, as shown (also see
FIG. 7). Preferably, the output shaft 108 is connected to the
central axle 126 by a yoke 133 (see FIG. 7). Under appropriate
circumstances, other arrangements may suffice. For example, the
output shaft 108 does not necessarily have to be fixed; however, it
is preferable. Further, multiple shafts may be used and only one
shaft is preferably in a fixed position, as shown. Still further, it
is noted the halves 110 and 112 and the shaft connections could be
made on either half 110 or 112 without deterring the functions of
the present invention.
Preferably, as stated above, the input shaft 106 is adjustable in a
plurality of angular positions relative to the output shaft 108 and
preferably comprises an angle-adjuster assembly 118, as shown.
Preferably, the exterior perimeter 134 of half 110 and half 112
comprises a set of teeth, preferably comprising a plurality of
equally spaced teeth 138, most preferably equally spaced squared
teeth and equally spaced recesses 140, preferably extending
completely around the exterior perimeter 134, as shown (embodying
herein wherein such at least one housing comprises a circular
periphery; and wherein such circular periphery comprises a set of
evenly-spaced teeth). Upon reading the teachings of this
specification, those with ordinary skill in the art will now
understand that, under appropriate circumstances, considering such
issues as economics, user preference, torque arrangements,
durability, etc., other teeth arrangements, may suffice.
Preferably, the angle-adjuster assembly 118 comprises a second set
of teeth 142, preferably made to adjoin and "lock" into the teeth
136, as shown. Preferably, the angle-adjuster assembly 118 comprises
a spring mechanism 144, as shown and further described below in
reference to FIG. 4. The above-described arrangement embodies herein
wherein at least one of such at least one rotatable first shaft and
at least one rotatable second shaft comprises at least one shaft
housing element comprising at least one shaft housing tooth
structured and arranged to fit between a pair of such evenly-spaced
teeth; and wherein such at least one shaft housing tooth is
removably engagable with such evenly-spaced teeth, wherein the user
may set such at least one angle.
Preferably, the input shaft 106 further comprises a first-shaft gear
146, preferably encircling the entire circumference of the input
shaft 106, as shown (embodying herein at least one rotatable first
shaft comprising at least one first gear, having at least one first
axis of rotation). Preferably, first-shaft gear 146 is fixed onto
input shaft 106, preferably with a setscrew 147, as shown. Upon
reading the teachings of this specification, those with ordinary
skill in the art will now understand that, under appropriate
circumstances, considering such issues as economics, user
preference, technological advance, etc., other methods of fixing the
first-shaft gear 146 onto input shaft 106, may suffice. Preferably,
first-shaft gear 146 is placed on input shaft 106 such that
first-shaft gear 146 will rotate second gear 132, as shown.
Preferably, the output shaft 108 further comprises a second-shaft
gear 148, preferably encircling the entire circumference of the
output shaft 108, as shown (embodying herein at least one rotatable
second shaft comprising at least one second gear, having at least
one second axis of rotation). Preferably, second-shaft gear 148 is
fixed onto output shaft 108, preferably with a setscrew 149, as
shown. Upon reading the teachings of this specification, those with
ordinary skill in the art will now understand that, under
appropriate circumstances, considering such issues as economics,
user preference, technological advance, etc., other methods of
fixing the second-shaft gear 148 is fixed onto output shaft 108, may
suffice. Preferably, second-shaft gear 148 is placed on output shaft
108 such that second-shaft gear 148 will be rotated by first gear
130, as shown.
Preferably, rotation of input shaft 106 rotates first-shaft gear 146
and causes second gear 132 to rotate and also first gear 130 to
rotate. Preferably, as first gear 130 rotates, it rotates the second
shaft gear, thereby rotating the output shaft 108. Preferably, both
halves 110 and 112 comprise such first gear 130 and second gear 132,
thereby assisting in balancing the power (torque) transfer equally
from the first-shaft gear 146 to the second-shaft gear 148, as shown
(embodying herein balancing means for using opposed gear plates to
balance torque transfer between such at least one first gear and
such at least one second gear; and embodying herein at least one
balancer structured and arranged to use opposed gear plates to
balance torque transfer between such at least one first gear and
such at least one second gear). In such manner, a rotation of the
input shaft 106 results in a rotation of the output shaft 108 and
vice versa.
FIG. 4 is a detailed view of the angle-adjuster assembly 118
according to a preferred embodiment of the present invention. FIG. 4
illustrates a preferred use of the angle-adjuster assembly 118.
Preferably, the angle-adjuster assembly comprises a housing 121, as
shown (embodying herein wherein such angle setting means comprises
housing means for positionally stabilizing the at least one angle).
Preferably, a user 150 pushes the upper plate 152 of the spring
mechanism 144 inward toward the housing 104 using fingers 154 with
enough pressure to force the spring 156 to retract and allowing the
gear 142 to disengage the gear teeth 136, as shown. Preferably, once
the gear teeth 136 are disengaged, the input shaft 106 may be
shifted to another position along the housing 104 (as indicated by
the arrows). Preferably, the user places the angle-adjuster assembly
118 into a preferred position and the upper plate 152 is released,
allowing the spring to be released and the gear 142 to re-engage the
gear teeth 136, thereby positively locking the angle-adjuster
assembly 118 (including housing 121) into place (embodying herein
wherein such angle setting means comprises positive locking means
for positive positional locking of the at least one angle; and
embodying herein wherein such housing means comprises positive
locking means for positive positional locking of the at least one
angle). Upon reading the teachings of this specification, those with
ordinary skill in the art will now understand that, under
appropriate circumstances, considering such issues as economics,
user preference, durability, ease of manufacture, etc., other angle
adjuster arrangements, may suffice. Preferably, the upper plate 152
has a non-slip upper surface 153, preferably ribbed, as shown.
Further, it is preferred that the spring 156 sits adjacent a bearing
assembly 158 that will allow the input shaft 106 to rotate without
rotating the spring 156 and potentially interfering with the
angle-adjuster assembly 118. Upon reading the teachings of this
specification, those with ordinary skill in the art will now
understand that, under appropriate circumstances, considering such
issues as economics, user preference, durability, etc., other
suitable spring 156 and bearing assembly 158 may be chosen without
undue experimentation by those knowledgeable in the art. For
example, FIG. 5 is a detailed view of another angle-adjuster
assembly 160 according to another preferred embodiment 162 of the
present invention. Preferably, in embodiment 162, the entire
angle-adjuster assembly 160 is located along the exterior of the
housing 164, as shown. Preferably, there is no spring in embodiment
162. Preferably, the gear teeth 166 are located along the exterior
perimeter of the housing 104, as shown. Preferably, there is a pair
of locking teeth 168, preferably squared locking teeth, that will
fit into the gear recesses 171 of gear teeth 166, as shown.
Preferably, the locking teeth 168 are adjusted by using a thumbscrew
tightening arrangement wherein a portion 170 of the input shaft 172
comprises threading 176 (allowing the input shaft 172 to rotate
freely), as shown. Preferably, a thumbscrew 178 comprising an
exterior shell 174, preferably knurled, and internal threading (not
shown) threadably attached to threading 176 such that rotating the
thumbscrew 178 clockwise tightens the locking teeth 168 into gear
teeth 166 and rotating the thumbscrew 178 counterclockwise releases
the locking teeth 168 such that the input shaft 172 may be relocated
to another position. Upon reading the teachings of this
specification, those with ordinary skill in the art will now
understand that, under appropriate circumstances, considering such
issues as economics, user preference, etc., other arrangements to
relocate the input shaft 172 to another location, may suffice.
FIG. 6 is a side view of the tool system of FIG. 1. FIG. 7 is a
sectional view through section 7-7 of FIG. 1. FIG. 6 and FIG. 7 more
clearly illustrate both halves 110 and 112 of the power transfer
assembly 102 in an assembled position. As described above, each half
110 and 112 comprises a first gear 130 and a second gear 132.
Preferably, having a respective gear 130 and gear 132 on each side
of the first-shaft gear 146 and second-shaft gear 148 provides
stability to the input shaft 106 and output shaft 108 as they are
rotated equally. Preferably, there are two first gears 130, one on
each respective half and mirrored to each other. And, preferably,
there are two second gears 132 one on each respective half and
mirrored to each other. Preferably, a gear plate 180, preferably
annular, comprises a respective set of the gears 130 and 132,
comprising first gear 130 and a second gear 132, as shown.
Preferably, a gear plate 182, preferably annular, comprises another
respective set of gears 130 and 132 comprising a first gear 130 and
a second gear 132, as shown. This arrangement embodies herein at
least one gear plate comprising at least one first unique circular
set of first gear teeth on such at least one gear plate and at least
one second unique circular set of second gear teeth on such at least
one gear plate.
Preferably, each respective gear plate 180 and gear plate 182 are
rotatably attached to the central axle 126, as shown. Preferably,
each respective gear plate 180 and 182 comprises a central bearing
184. Preferably, the central bearing 184 is located in an inner
aperture 186 of the annular opening in the center of each respective
gear plate 180 and 182, as shown. Preferably, the central bearing
184 has an opening 188 structured and arranged to allow the central
axle 126 to fit, and opening 188 is preferably round, as shown. Upon
reading the teachings of this specification, those with ordinary
skill in the art will now understand that, under appropriate
circumstances, considering such issues as economics, user
preference, durability, etc., other bearing arrangements, may
suffice.
FIG. 7 illustrates a preferred method of assembly of the power
transfer assembly 102. Preferably, a connector 114 is threadably
attached to a half, for example, half 112, as shown. Preferably, a
gear plate 180 is placed next to half 112 and adjacent yoke 128 and
yoke 133 (with respective attached input shaft 106 and output shaft
108; the input shaft 106 being put through the angle-adjuster
assembly 160 and then placed onto yoke 128, as shown) such that all
are positioned in line with a central axis of the half 112, as
shown. Upon reading the teachings of this specification, those with
ordinary skill in the art will now understand that, under
appropriate circumstances, considering such issues as economics,
user preference, durability, manufacturing preferences, etc., other
connection arrangements, may suffice.
Preferably, the central axle 126 is placed through the yoke 128 and
yoke 133 and through a central bearing 184 placed in the annulus of
gear 180 and threadably attached to the connector 114, as shown.
Preferably, the gear plate 182 and respective central bearing 184
are then placed over an end 190 of the central axle 126, as shown.
Preferably, the half 110 and another connector 114 are then
threadably placed onto the central axle 126, as shown (embodying
herein wherein such at least one bar connects such housing with such
at least one rotatable first shaft and such at least one rotatable
second shaft). Upon reading the teachings of this specification,
those with ordinary skill in the art will now understand that, under
appropriate circumstances, considering such issues as economics,
user preference, durability, manufacturing preferences, etc., other
connection arrangements, may suffice.
Preferably, the input shaft 106 and the output shaft 108 are
attached to their respective yoke 128 and yoke 133, preferably using
a groove 192 in the respective shaft and a c-clip 194 placed in the
groove, as shown. Upon reading the teachings of this specification,
those with ordinary skill in the art will now understand that, under
appropriate circumstances, considering such issues as economics,
user preference, durability, manufacturing preferences, etc., other
attachment arrangements, may suffice. For example, a bearing may be
placed at the end 196 of each shaft 106 and 108 to reduce frictional
movement at that joint 198.
Preferably, in such manner as described above, a rotating tool (such
as rotatable drill 120 shown in FIG. 2) attached to the input shaft
106 and rotated will preferably turn first-shaft gear 146, thereby
turning gear plates 180 and 182, which will preferably turn gear 148
and rotate output shaft 108.
FIG. 8 is a side view of one-half of the tool drive system 100
illustrating power transfer assembly 200 comprising a gear adjusting
mechanism 202 (embodying herein gear positioning means for
positioning at least one of such at least one first gear and such at
least one second gear in a gear-tooth-locking relationship with a
user-selected one of such at least one first unique circular set of
first gear teeth on such at least one gear plate and such at least
one second unique circular set of second gear teeth on such at least
one gear plate; and, embodying herein at least one gear positioner
structured and arranged to position at least one of such at least
one first gear and such at least one second gear in a
gear-tooth-locking relationship with a user-selected one of such at
least one first unique circular set of first gear teeth on such at
least one gear plate and such at least one second unique circular
set of second gear teeth on such at least one gear plate),
preferably for the output shaft 204, according to another preferred
embodiment of the present invention. Preferably, power transfer
assembly 200 utilizes an input shaft 206 such as described for input
shaft 106 above. However, power transfer assembly 200 preferably
utilizes an output shaft 204 different from output shaft 108.
Preferably, output shaft 204 may be adjusted such that it will
rotate along the same gear path as input shaft assembly 206 or a
separate gear path, as in the embodiment of FIG. 1. Preferably, in
power transfer assembly 200 the gears 208 and 210 are closer
together than in power transfer assembly 102 described above, to
assist enabling the gear adjusting mechanism 202, as shown. Upon
reading the teachings of this specification, those with ordinary
skill in the art will now understand that, under appropriate
circumstances, considering such issues as economics, user
preference, durability, manufacturing preferences, etc., other
arrangements, such as changing the gearing dimensions and spacing
etc., may suffice.
FIG. 9 is a detail of the gear adjusting mechanism 202 of FIG. 8
according to another preferred embodiment of the present invention.
FIG. 10 is an exploded view, partially in section, of the
adjustable-gear drive shaft assembly 212 of the tool system of FIG.
8. Preferably, the output shaft 204 comprises an adjustable-gear
drive shaft assembly 212 comprising a first shaft portion 214, a
gear 216 and a second shaft portion 218, preferably telescopically
movable within the first shaft portion 214, as shown. Preferably,
first shaft portion 214 comprises three grooves 220, 221 and 222, as
shown (embodying herein wherein such at least one rotatable first
shaft further comprises a plurality of circumferential grooves).
Preferably, groove(s) 220, 221 and 222 define a set longitudinal
positions for gear 216 adjacent gear 208 and gear 210, as shown
(embodying herein wherein at least one longitudinal position of at
least one of such at least one first gear and such at least one
second gear may be user selectable). Preferably, gear adjusting
mechanism 202 is slidably attached to the output shaft 204 parallel
and along each half 224 and 226 as well as affixed to each
respective half 224 and half 226 (shown in FIG. 11), as shown.
Preferably, the gear adjusting mechanism 202 comprises a button
release 228 and pair of shaft engaging mechanisms 223, as shown
(embodying herein wherein such at least one gear positioner
comprises at least one spring-loaded retractable-pin element
structured and arranged to stabilize at least one longitudinal
position of such at least one rotatable first shaft by entry into at
least one such circumferential groove). Preferably, gear 216 may be
placed on either gear 208 or gear 210, as shown. Preferably,
depressing button release 228 releases the first shaft portion 214
such that it can move either towards the central axle 230 or toward
the housing perimeter 232, as shown. Preferably, movement of the
first shaft portion 214 moves the gear 216. Preferably, groove 222
and groove 221 are aligned such that gear 216 will be on gear 208
when shaft engaging mechanism 223 of the gear adjusting mechanism
202 simultaneously lock into both groove 222 and groove 221 (as
shown in FIG. 8). Although only two rings of gears (208 and 210) are
shown, upon reading this specification those skilled in the art will
understand that, under appropriate circumstances, depending upon how
many gear ratios may be desired, upon appropriate circumstances of
mechanics, space, and costs, N (a whole number over one) such rings
of gears may be provided. This arrangement embodies herein wherein
such at least one gear plate comprises N unique circular sets of
gear teeth on such at least one gear plate; and such at least one
gear positioner permits a user-selected positioning of at least one
of such at least one first gear and such at least one second gear in
a gear-tooth-locking relationship with a user-selected one of such N
unique circular sets of gear teeth on such at least one gear plate.
Preferably, groove 220 and groove 222 are aligned such that gear 216
will be on gear 210 when shaft-engaging mechanism 223 of the gear
adjusting mechanism 202 simultaneously locks into both groove 220
and groove 222. Preferably, a user may adjust such gearing as
desired and provide a one to one gear ratio by using the same gear
210 as the input shaft 206 or a different gearing by utilizing gear
208 (embodying herein wherein a gear ratio may be user selected).
Upon reading the teachings of this specification, those with
ordinary skill in the art will now understand that, under
appropriate circumstances, considering such issues as economics,
user preference, durability, manufacturing preferences, etc., other
gearing arrangements, may suffice.
FIG. 11 is a sectional view through section 11-11 of FIG. 8 of a
button adjusting mechanism 202 in a static position 240 according to
another embodiment of the present invention.
FIG. 12 is another sectional view of the button adjusting mechanism
202 of FIG. 11 showing a different position of buttons in an
operable position 260. Preferably, the gear adjusting mechanism 202
comprises two V-clips 242 and 244, preferably mirrored to each
other, as shown. Preferably, each respective V-clip 242 and 244 is
spring tensioned towards the other V-clip by springs 246, preferably
equal in tension, as shown. Preferably, each respective spring 246
is mounted on a stop 248, as shown. Preferably, each respective stop
248 provides a stop such that each respective V-clip 242 and 244 may
only travel a set distance in an opposite direction from each other
respective V-clip 242 or 244, as shown. Upon reading the teachings
of this specification, those with ordinary skill in the art will now
understand that, under appropriate circumstances, considering such
issues as economics, user preference, durability, manufacturing
preferences, etc., other clip arrangements, such as U-clips etc.,
may suffice. Preferably, each respective stop 248 is attached to a
half 226 by a post 250, as shown. Under appropriate circumstances,
other attachment or support arrangements may suffice.
Preferably, button adjusting mechanism 202 further comprises a
button release 228, preferably situate about ninety-degrees from a
longitudinal axis of each stop 248 such that a respective end 252 of
each V-clip 242 and 244 is tightly adjacent an end 254 of the button
release 228, as shown. Furthermore, it is preferred that each
respective end 252 of each V-clip 242 and 244 comprises a bearing
assembly 255 that assists the movement of the V-clip 242 and 244
along the end 254 of the button release 228, as shown. Preferably,
each bearing assembly 255 comprises a spring tensioner 257 to
maintain contact between the bearing 259 and an end 254 of the
button release 228, as shown. Preferably, the end 254 of the button
release 228 is about forty-five degrees angled, as shown, and the
end 252 of the V-clip 242 and 244 is also about forty-five degrees
angled, as shown. Upon reading the teachings of this specification,
those with ordinary skill in the art will now understand that, under
appropriate circumstances, considering such issues as economics,
user preference, durability, etc., other arrangements for the button
adjusting mechanism 202, may suffice.
In such manner as described above and illustrated, depressing of the
button release mechanism pushes each respective V-clip 242 and 244
against the respective spring 246 and towards stop 248, preferably
causing the V-clips 242 and 244 to release from the respective
groove 220 (or 221/222) and allowing movement of shaft 214, as
shown. Further, it is preferable that gear adjusting mechanism 202
is attached to each respective half 224 and 226 by attachment base
plates 256 and 258, preferably U-shaped, as shown. Upon reading the
teachings of this specification, those with ordinary skill in the
art will now understand that, under appropriate circumstances,
considering such issues as economics, user preference, etc., other
suitable adjusting arrangements, such as other styles of button
arrangements, etc., may suffice.
FIG. 13 is a sectional view of another button adjusting mechanism
272 for the gear adjusting mechanism 202 of FIG. 8, according to yet
another preferred embodiment 270 of the present invention. In this
embodiment 270, the buttons 272 are located on a single half (half
220 is shown) of the power transfer assembly 102, which is
preferably attached to both halves 224 and 226, as shown.
Preferably, button adjusting mechanism 272 comprises a pair of
lever-arms 274 which are mechanically moved in and out of the groove
220 or 222, as shown. Preferably, such mechanical movement is
accomplished by use of dual buttons 272, each respective button 272
connected to one end 276 of lever-arms 274, as shown. Preferably,
each respective button 272 comprises a movable platform 278,
preferably spring mounted above an immovable platform 280,
preferably attached to a half 226, as shown. Preferably, the movable
platform 278 comprises springs 282 mounted on screws 284, as shown.
Preferably, the springs 282 push the movable platform 278 toward
half 224, in conjunction with a return spring 290, when the buttons
272 are not being pushed by a user. Preferably, each respective
movable platform 278 also comprises at least one stop 286, as shown.
Preferably, the immovable platform 280 also comprises at least one
stop 288, preferably aligned with stop 286, as shown. Preferably,
the lever-arms 274 are connected at pivot point 292, as shown.
Preferably, each respective lever-arm 274 comprises a return spring
294 (and bearing 295), as shown. Under appropriate circumstances,
other arrangements may suffice. Even further, preferably two pairs
of button adjusting mechanism 272 are required to lock four
lever-arms 274 into grooves 220 and 222. Four button tops extending
from half 224 are connected in pairs by external attachers,
preferably thin sheet metal so that all the lever-arms 274 operate
simultaneously. Upon reading the teachings of this specification,
those with ordinary skill in the art will now understand that, under
appropriate circumstances, considering such issues as economics,
user preference, etc., other connection arrangements, may suffice.
In operation, a user presses both buttons 272. Preferably, when both
buttons 272 are depressed the lever-arms 274 are pushed down and
away from the groove 220, 221 or 222 allowing movement of shaft 214,
as shown and described above. Upon reading the teachings of this
specification, those with ordinary skill in the art will now
understand that, under appropriate circumstances, considering such
issues as economics, user preference, etc., other sufficient means
to adjust and lock gear 216 into place, may suffice.
FIG. 14 is a side view of one-half of the tool drive system 100
illustrating a three-drive-shaft embodiment 300 according to another
preferred embodiment of the present invention. Preferably, the
three-drive-shaft embodiment 300 comprises input shaft 302, input
shaft 304 and one output shaft 306, as shown (embodying herein
wherein such at least one rotatable first shaft further comprises at
least two first shafts, each respective shaft comprising at least
one first gear, having at least one first axis of rotation).
Preferably, each respective input shaft 302, input shaft 304 and
output shaft 306 comprise a respective gear 308, 310, and 312
specifically connected to a respective transfer gear 314, 316, and
318, as shown. The remaining portions of the three-drive-shaft
embodiment 300 are similar to the two-shaft embodiment of FIG. 1 and
FIG. 3 described above. Preferably, the three-drive-shaft embodiment
300 provides multiple drive gear ratios without having to move an
adjustable gear such as described in FIG. 8. It is noted that, in
light of the teachings herein, under appropriate circumstances,
other combinations of gearing and drive shafts may be provided
without detracting from the functions of the described embodiments.
Preferably, use of adapter 400 can interchange input shaft 304 to an
output shaft for increased rotational speed.
Although applicant has described applicant's preferred embodiments
of this invention, it will be understood that the broadest scope of
this invention includes such modifications as diverse shapes and
sizes and materials. Such scope is limited only by the below claims
as read in connection with the above specification.
Further, many other advantages of applicant's invention will be
apparent to those skilled in the art from the above descriptions and
the below claims:
* * * * *
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