Abstract: A fluid displacement rotary machine is disclosed, more specifically a rotating piston compressor enclosed in a casing formed with a vent through which may freely enter the gas or vapor to be compressed. Radial cylinders are part of a rotor rotatably supported by a shaft co-axial with the rotor. The rotor is power-driven. The piston connecting rods rotate about a stud fixed to the casing and eccentric to the rotor. Each cylinder head includes a scoop rotating therewith and adapted to channel the gas or vapor into the cylinder head; and further includes a delivery pipe connected to a bore formed in the rotor supporting shaft which extends externally of one casing end wall. The cylinders and the pistons rotate in respective annular paths and yet the pistons make a reciprocating movement within their cylinders because of the eccentric mounting of the stud relative to the rotor axis.

Abstract: An internal combustion rotary engine of the type comprising a rotor, an output shaft eccentric to the rotor, pistons reciprocable in and out in the rotor relative to its axis of rotation, and piston rods connecting the pistons to the shaft. This rotary engine is characterized by the absence of dead points in the course of the pistons and piston rods, by connection of the piston rods to the output shaft to maintain substantial leverage for the action of the pistons on the output shaft, and by a simple connection between the output shaft and the rotor to concurrently synchronize them.