Snake Repellent System
A snake repellent system for use in repelling snakes so as to prevent the human user from being bitten. The snake repellent system consists of a receptacle into which is placed a quantity of garlic or onion, the aroma of which is believed to be effective in repelling snakes. The receptacle is provided with a lid having a plurality of openings for facilitating the dispersal of the garlic or onion aroma. The receptacle may be provided with a mincing rack used to mince a clove of garlic, thereby more fully releasing its aroma. The receptacle may also be provided with a means to both limit child access to the repellent substance within the receptacle and prevent removal of the repellent substance from the lid openings. An adjustable band is provided for attaching the receptacle to the arm or leg of the user.

Fuel-Efficient Tractor-Trailer System
A fuel-efficient tractor-trailer system for improving the fuel mileage of a tractor-trailer combination by improving the air resistance that occurs in the area between the rear of the tractor and the front of the semi-trailer. The fuel-efficient tractor-trailer system provides an improved roof extension, which automatically raises when the tractor is put into reverse gear and an improved wheel mechanism for assisting the side extensions to slide around the semi-trailer ends when the tractor-trailer is turning. The fuel-efficient tractor-trailer system requires only modification to the tractor and not the trailer.

Waste Oil Electrical Generation Systems
An on-site electrical power generation system utilizing environmentally hazardous waste oils as a combustible fuel. The disclosed invention utilizes environmentally hazardous waste oils generated by one or more on-site processes, such as, for example, by the maintenance of transportation vehicles. In addition, the system is adapted to provide local space heating and hot water as a byproduct of the combustion process.