Abstract: A rotary compressor including two rotary disc-shaped members having a diameter slightly smaller than that of a rotor each disposed on opposite ends of the rotor and supported on the same rotary shaft as the rotor for rotation, and two disc-shaped recesses each formed on one of inner opposite end surfaces of a housing for receiving therein one of the plurality of rotary disc-shaped members. A small gap is formed between the inner end surfaces of the housing and the end surfaces of the rotor, and small gaps are formed between surfaces of the rotary disc-shaped members and surfaces of the disc-shaped recesses. The area through which a fluid leaks from the high pressure side to the low pressure side in the housing is minimized, and resistance is offered by the tortuous path to the flow of the fluid toward the rotary shaft, to thereby minimize the leakage of fluid during operation of the compressor.

Abstract: A positive displacement four-lobe impeller structure for use as a fluid driving or a fluid driven member or pump or generator is presented. The terminology pump is used to describe said structure subsequently. The pump comprises a symmetrical cylindrical housing having two 190.degree. arc cross-section interior walls separated by an inlet area and an outlet area. Inside the housing and disposed a selected distance apart therein are two cylindrical axially symmetric identical impellers. Each impeller comprises four interior concave arc sidewalls disposed 90.degree. apart and forming the base of four lobes. The concave arc side walls flow into and couple to exterior convex arc sidewalls which in turn flow into and connect to dual slightly extended tips. Each of said tips is separated from the opposite tip on the end of the lobe by an arc tip indentation. Each impeller is coaxial with the 190.degree.

Abstract: A rotary compressor for compressing fluid. A housing having a cylindrical internal cavity is provided with vanes and delivery ports. A rotor is rotatably mounted in the housing. The rotor has a portion for making a sealing contact with the inner peripheral surface of the housing. The rotor has a suction chamber formed therein. The number of the vanes is greater by 1 (one) than the number of the sealing contacts between the rotor and the inner peripheral surface of the housing. At least one suction port is formed through the wall of the rotor, so that the fluid in the suction chamber may be sucked into the working chamber defined by the vanes, rotor and the housing. The suction port is so located that, when a working chamber has been expanded to its maximum volume, the suction port is positioned between the vane located at the leading side of the working chamber as viewed in the direction or rotation of the rotor and the sealing portion closer to the vane.

Abstract: A disc is fixedly secured to a main shaft for rotation therewith between a cover member and a housing. The disc carries four piston lugs equally disposed about its periphery and which extend radially therefrom for rotary passage through an annular action channel formed between the cover and the housing. Three radially extending combustion members are carried by the housing, equally spaced about the axis of rotation of said main shaft and so that a portion of each of said combustion members extends into said annular action channel for successive co-operation with each of said piston lugs. Each combustion member carries a cam follower which extends from its respective combustion chamber into a radial cam track formed in a cam member carried by the main shaft for rotation therewith. The rotary piston engine provides a highly efficient use of fuel with an advantegeous weight to power output ratio.

Abstract: A rotary engine having a high surface to volume ratio including a housing having intake and exhaust ports and defining a chamber, a shaft journalled in the housing to extend therethrough and having an eccentric within the chamber, and a rotor on the eccentric within the chamber, the rotor having a body consisting essentially of a material having a low coefficient of thermal conductivity.

Abstract: A rotary trochoidal compressor comprising a rotor mounted for planetary motion within a housing and in which the peripheral surface of the compressor rotor is substantially a hypotrochoid and the peripheral inner surface of the housing is the outer envelope of the rotor and in which a compressible layer is provided on the inner surface of the rotor housing for sealing against the rotor peripheral surface.

Abstract: A rotary trochoidal compressor comprising a rotor mounted for planetary motion within a housing and in which the periphery of the compressor rotor is substantially a hypotrochoid and the peripheral inner surface of the housing is the outer envelope of the rotor and in which labyrinth seal means is provided between the rotor and housing.

Abstract: A rotary diesel engine in which the engine has seal means providing sealing cooperation between each working face of the engine rotor and the engine housing in the region of a lobe junction of the multi-lobe profile of said housing so that during compression, each working chamber is divided by said seal means into leading and trailing portions with the compression of the intake charge of said chamber being substantially confined to its said trailing portion whereby each working chamber compresses its charge to a substantially greater degree than would be the case in the absence of said seal means.

Abstract: A mechanical system for a rotary machine, which has a rotor and sets of abutments arranged around the rotor. The abutments are arranged to couple mechanically with the rotor and with separate consecutive variable volume channels or chambers of different pressures dividing a peripheral groove in the rotor by blades.