Abstract: An articulated air vane air or hydraulic motor has a rotor core disposed coaxially in a cylindrical housing, with a plurality of articulating vanes that seat in axial sockets or slots in the rotor core. A crescent shaped insert defines a cam surface in the chamber between the housing and the core. Inlet and exhaust ports are formed either in the housing cylinder or in the end plates. Vane wear is significantly reduced and injected lubricant is not required. The vanes can be generally P-shaped in cross section, with stop structure to limit the articulating motion.

Abstract: A lubricator for pneumatic driven power tools and the like is disclosed which operates on the principle of receiving impact air to pressurize an oil reservoir to provide a metered flow of lubricant in proportion to the amount of air flow in one direction and to bypass the pressure differential created during reverse flow so as to avoid lubricant delivery during reverse flow. The lubricator communicates between a delivery air passageway and a oil reservoir and is provided with parallel passages, one of which extends forward of the other into the air stream to produce a pressure differential.