Abstract: The present disclosure describes the use of involute curves for use in energy conversion devices, as well as timing or indexing gears. Several different embodiments are shown using rotors of several examples of lobe numbers and shapes.

Abstract: Disclosed herein are several embodiments for shroud arrangements to be used in rotary engines using a plurality of rotors within the shroud arrangement. At least one of the rotors is not fixed to the shroud.

Abstract: A positive displacement internal combustion engine with the strongest mechanism for converting thermal energy of combustion gases to rotational motion, being composed of a body with spherical combustion chamber, and three spatial eccentrics being placed in said spherical chamber. The mechanism is particularly suitable for heavily loaded detonation and homogeneous charge compression ignition engines.

Abstract: A rotary positive displacement pump (1) that includes an impeller (3) that defines, within a pumping chamber (20), a plurality of successive chambers (21) with variable volume through which a fluid is mechanically conveyed from an inlet (7) to an outlet (8). The chambers (21) with variable volume are defined, at axially opposite ends, by a pair of rotational surfaces (40, 50) that close the pumping chamber (20) and are arranged to rotate about mutually inclined axes. Also described is a method of manufacturing the pump.

Abstract: This invention relates to a twin-plate, rotary compressor and refers particularly, though not exclusively, to a twin-plate, rotary compressor comprising two conical plates for relative rolling motion within a casing, there being a line contact between the two conical plates; the line contact being maintainable during operation of the compressor; a central seal for sealingly engaging correspondingly-shaped recesses of the two conical plates; and an outer seal in mating relationship with the two conical plates; wherein the central seal is mounted on a drive shaft, the drive shaft being operatively connected to an output shaft of a motor; wherein the drive shaft, the central seal and the outer seal are for rotation about a third axis of rotation, the third axis of rotation being coincident with a longitudinal axis of the drive shaft and a center of the central seal.

Abstract: A rotary piston machine includes a driving part driven by an electric motor, and a driven part that have mutually engaging end-face denticulation for delivering a medium, the driving part and the driven part being housed in a machine housing and connected to the machine housing via respective bottom bearings of the driving/driven parts, creating a unit.

Abstract: The rotary engine piston and seal assembly is disclosed that improves engine efficiency and power and reduces wear on an inner housing surface. It has a somewhat cube-shaped piston and a pair of grooves running around all four sliding side surfaces. The grooves contain a series of segmented metal seals and are compressed against the mating surfaces by a group of seal springs.

Abstract: A fluid power transfer device includes a pair of rotors and vanes mounted for rotation in a hollow housing having an equatorial plane wherein conical faces of the rotors rollingly engage each other to form a line contact and wherein a hinge pin which hingedly connects the vanes is constrained to rotate in the equatorial plane of the housing. A sun gear sector is connected to the side of each vane opposite the hinge pin. A ring gear sector is connected to the inner end of each output shaft to rotate therewith. A pinion planet gear connects each ring gear sector to each sun gear sector so that the pinion planet gears rock back and forth between their respective sectors as the vanes rock about the hinge pin. The pinion planet gears are elongated and confine the hinge pin to the equatorial plane. The pinion planet gears also act as splines to transfer torque. Each rotor includes a pair of rotor portions and an interconnecting outer band.

Abstract: A universally-movable machine part includes a disc member having a disc shaft and a recessed slot defining a bearing surface conforming to a smooth cylindrically-curved plane. At least one planar vane member defines a lower bearing surface conforming to the smooth cylindrically-curved plane of the disc slot so as to be pivotally slidably mated therewith. A rotor member having a rotor shaft defines a groove which establishes a plane passing through a geometric center point of the device and in which an upper portion of the vane member is accepted so as to be pivotal within the established plane. The rotor member also defines a lower surface upwardly and outwardly divergent relative to the geometric center point of the device to permit the rotor member to be pivotally movable about an axis mutually perpendicular with the axis defined by the disc shaft and the axis about which the vane member pivots so that the rotor member will also be pivotally movable together with the vane member.