Abstract: A mechanical gear apparatus that provides power transmission wherein a gear that is driven moves only in a forward direction when the driving gear is driven forward or in reverse. It is a mechanical gear apparatus comprising a support base, a drive gear, and, a directional gear assembly comprising three gears and, another configuration in which there is a mechanical gear apparatus comprising a support base, a driven gear, and a directional gear assembly comprising two directional gears and a drive gear. The gears in the mechanical gear apparatus can be substituted by smooth or rough surface rubber rollers.

Abstract: A mechanical gear apparatus that provides power transmission wherein a gear that is driven moves only in a forward direction when the driving gear is driven forward or in reverse. It is a mechanical gear apparatus comprising a support base, a drive gear, and, a directional gear assembly comprising three gears and, another configuration in which there is a mechanical gear apparatus comprising a support base, a driven gear, and a directional gear assembly comprising two directional gears and a drive gear. The gears in the mechanical gear apparatus can be substituted by smooth or rough surface rubber rollers.

Abstract: This invention provides a spray canister comprising an outer housing an an inner housing, each housing having a concave base, the base of said inner housing being adapted to mate with the base of said outer housing, said outer housing having first and second oppositely disposed openings, said first opening being adapted to receive said inner housing, said outer housing having a top portion fitted with spring means and sealing means, and having inlet means for applying air pressure to said inner housing and means adapted for operative connection with a spraying head for dispensing material from said inner housing, said inner housing being adapted to contain material to be sprayed and having a top portion adapted to sealingly contact the sealing means of said outer housing when said inner housing is inserted in said outer housing.

Abstract: An air driven hydraulic system for spraying liquids comprising a double acting cylinder having a central piston with an oil supply on one side of said piston and air on the other side of said piston and means of alternately controlling the supply of air and oil to the cylinder.