Abstract: A twin rotary compressor is provided. In the twin rotary compressor, a refrigerant suction pipe may be connected to a middle plate positioned between a first cylinder and a second cylinder to reduce a height of the first cylinder, so that heights of a first rolling piston and a first vane may also be lowered. This may allow a contact area between the first rolling piston and the first vane to be decreased so as to reduce refrigerant leakage from a first compression space of the first cylinder, resulting in improvement of compression efficiency of the compressor.

Abstract: A rotary volumetric machine includes a stator in which a cylindrical chamber is provided, a rotor disposed therein and secured to a shaft, blades formed on the rotor, and abutments movable by actuating elements between an extended position into the volume of the cylindrical chamber during the working phase so as to generate variations of volume between the blades and the abutments, and a position retracted into the stator to permit the passage of the blades from one side to the other of the abutments. The rotor includes a disc, two concentric shoulders disposed on opposite sides of the disc and two fixed blades disposed diametrically opposite on opposite sides of the disc each against one surface thereof and secured to the periphery of a shoulder so as to obtain an assembly balanced in rotation.

Abstract: A hydraulic rotary actuator assembly includes a rotatable drive assembly disposed about and rotatable about a longitudinal axis of the actuator and a stator assembly disposed about the rotatable drive assembly. The rotatable drive assembly includes an output shaft having a coupling end for rotatably engaging a workpiece, and a rotor disposed concentrically about the longitudinal axis and rotatable to drive rotation of the output shaft. The rotor has an outside radial surface that includes at least one radially protruding flange or rotor vane. The stator assembly is disposed concentrically about and generally radially spaced from the rotor and has at least one radially movable stator vane that is sealingly engageable with the outside radial surface of the rotor.

Abstract: A pump for moving a fluid has a housing with a cylindrical internal chamber accommodating a cylindrical piston. The piston is eccentrically secured to a shaft rotatably mounted on the housing. A baffle located in a recess in the housing controls the flow of fluid through the housing from a fluid inlet passage to a fluid outlet passage. A pair of cams eccentrically mounted on the shaft linearly move cam followers connected to the baffle to maintain an end of the baffle in close relation to the piston as the piston turns in the chamber.

Abstract: A rotary gas compressor comprises an eccentric roller rotating within a cylinder to form, together with a wall of the cylinder, a suction chamber and a compression chamber. The suction and compression chambers are separated from one another by a vane which slides within a slide hole such that an edge of the vane continuously bears against the roller and is caused to slide during rotation of the roller. Gas is sucked into the suction chamber, compressed in the compression chamber, and then discharged through a discharge port. The discharge port does not communicate directly with the compression chamber, but rather communicates with the slide hole. The vane has a gas flow recess formed therein and positioned to intermittently connect the compression chamber with the discharge port to permit gas to be discharged.

Abstract: A rotary piston vacuum pump has a rotor eccentrically disposed in a cylinder and mounted therein for revolution in rolling contact with the cylindrical inner peripheral surface of the cylinder so that a crescent-shaped space is defined between the rotor and the cylinder and moved around the axis of the cylinder. A vane is radially reciprocally mounted in a vane chamber having an inner end open to the cylindrical inner peripheral surface of the cylinder. The vane has an inner end in sliding contact with the outer peripheral surface of the rotor to divide the crescent-shaped space into a suction chamber in communication with a suction port and a discharge port to be communicated with a discharge port having an inner end open in a wall of an outer part of the vane chamber.

Abstract: A rotary type internal combustion engine including an outer housing in which a rotor is rotatably mounted, the rotor having at least one pocket formed in the periphery and in which combustion gases expand to drive the rotor. A oscillating member is mounted in an inner circumferential wall of the housing and engages the outer periphery of the rotor and enters the pocket as it passes, the oscillating member being hollow and co-operating with a stationary inner piston to form an expandable combustion chamber into which is admitted a fuel mixture for ignition by ignition means. The oscillating member has an outlet which permits most of the combustion gases to escape from the combustion chamber into the pocket of the rotor to provide a force between the reciprocating member and a leading surface of the pocket for driving the rotor.

Abstract: A rotary piston vacuum pump has a rotor eccentrically disposed in a cylinder and mounted therein for revolution in rolling contact with the cylindrical inner peripehral surface of the cylinder so that a crescent-shaped space is defined between the rotor and the cylinder and moved around the axis of the cylinder. A vane is radially reciprocally mounted in a vane chamber having an inner end open to the cylindrical inner peripheral surface of the cylinder. The vane has an inner end in sliding contact with the outer peripheral surface of the rotor to divide the crescent-shaped space into a suction chamber in communication with a suction port and a discharge port to be communicated with a discharge port having an inner end open in a wall of an outer part of the vane chamber.

Abstract: A power plant including a vane type engine having fuel compression means and a gas expansion means. Air or an air-fuel mixture compressed by the vanes in the compression means is fed to a free piston combustion member where burning takes place and gases are returned to the gas expansion means of the engine to drive the power shaft.

Abstract: This invention relates to a simplified design for a rotary internal combustion engine. The engine consists of rollers, acting as pistons and cranks, and specially designed vanes or seals which divide each roller housing into two working chambers. The vane is shaped in such a way that it is held down against the roller by the pressure of the gases which it is restraining. The vane on the expansion chamber also serves as the sealing valve on the outlet end of the fire tube. The engine cooling system is unique in the fact that the compressor is not cooled. The fire tube or combustion chamber is a titanium or high temperature material that is insulated from the rest of the engine. This tube is designed to stand the maximum temperatures and maximum pressures of combustion. The expander is cooled by a water injection spray which is introduced directly into the expansion chamber. Through cooling, the injected water removes energy from the gases and uses that energy to create steam for greater power.

Abstract: A fluid driving or fluid driven machine includes an outer cylinder housing stationary piston. The piston includes a generally annular flexible band of smaller circumference than the inner circumference of the cylinder, and a rotary body accommodated within the band. The rotary body has three rollers for urging the band against the inner surface of the cylinder at three angularly spaced locations so that the band defines with the cylinder three working chambers. Two separating members mounted on the cylinder are biased into contact with the band.When the rotary body is rotated the band makes nonslip contact with the wall and rotates the working chambers about the axis of the rotary body. Each separating member separates each working chamber as it passes into two discrete enclosures. A port is located on each side of each separating member to allow communication with the two discrete enclosures. The machine can be operated as a compressor when the rotary body is driven or as an engine to drive the rotary body.