Abstract: A rotary sliding vane pump having vanes fabricated from a carbon/carbon based material that provides improved performance by inhibiting vane wear, chipping or fracture. The advantages provided by carbon/carbon based materials may be further enhanced by impregnating each carbon/carbon sliding vane with a teflon based coating.

Abstract: The invention comprises a rotary pump with sliding vanes with a self-lubricating solid coating covering the exterior end facing surfaces of the rotor and end facing surfaces of air transfer end plates. Additionally disclosed herein is a rotary pump with sliding vanes with a pair of bushings centrally located in the rotor with the internal bearing facing surfaces of the bushings covered with a self-lubricating solid coating.

Abstract: Apparatus including a reciprocating piston driven by a connecting means operating within a slider for driving a piston in a reciprocating motion. The slider is mounted in a crank case housing and includes guides for maintaining the orientation of the piston relative to surrounding cylinder walls. The cylinder is attached to the crank case housing at one end and attached to a cylinder head at the opposite end. The cylinder head includes an intake valve and an exhaust valve for controlling the flow of fluid into and from the piston chamber. To drive the piston a crank shaft is rotatably attached to a connecting means that rotates within the slider and connects thereto. Fastened to the crank shaft is a flexible coupling for coupling the crank shaft to a source of driving power.