ROTARY DEVICES OPERATED BY PRESSURIZED-FLUID

摘要

This invention relates to a rotary pressurized-fluid device usable as a pump, a compressor or a motor, comprises first and second coaxial annular units of revolution capable of turning one relative to the other around an axis common thereto, one of said units carrying at least one piston movable in at least one cylinder formed by an annular groove is axially located in the other of said units, and divided into work-chambers by mobile partitions which slide in grooves and which are subject to the action of cams carried by said one of said units and an inlet and an outlet orifice for the fluid communicating respectively with two orifices located one on each side of said piston.