Abstract: A machine is disclosed that may be configured as a pump, a compressor or an engine. The machine displaces volume by means of pistons that are connected to a driveshaft without oscillating connecting rods. Cylinders are disposed in a rotating cylinder block that rotates on an axis inclined to the axis of rotation of the pistons. A spherical member centers the driveshaft with respect to the cylinder block, and a biasing means urges the cylinder block against a bearing surface. Displacement may be varied by varying the angle of inclination of the two axes of rotation.

Abstract: A rotary internal combustion engine including a plurality of toroidal cylinders and toroidal pistons that are slidably carried within the cylinders. Combustion of an air-fuel mixture within the respective cylinders provides a series of circumferential power strokes for more efficient operation. The pistons and cylinders are carried by a pair of side-by-side, coaxial drive rotors, the output power pulses of which are transmitted through a drive clutch and planetary gear assembly to an engine output drive shaft. The drive clutch and planetary gear assembly includes four overrunning clutches and a planetary gear train to smoothly transmit the successive intermittent engine power strokes to the output drive shaft.

Abstract: This invention is an internal combustion engine having arcuate pistons inside a rotating annular cylinder block which is divided into two combustion chambers by a pair of diametrically opposed cylinder heads. Each combustion chamber has an air intake port and an exhaust outlet for burned gases. The arcuate pistons form within the cylinder heads two combustion chambers and two compressors or pumps. The relative rotation of the cylinder and the arcuate pistons is controlled by mechanical scissor-action-type eccentric cranks connected to an eccentrically rotatable ring.

Abstract: The machine comprises at least one central pivot 7 angularly fast with a control member 1 and mounted for oscillation on said control member 1 around a direction perpendicular to the axis of the control member 1 and a first eccentric 31 the axis of the active portion of which 33 passes through the intersection of the axes of the control member 1 and of the central pivot 7.A piston 22 turns on the active part 33 of the eccentric 31 and is pivoted concentrically to the axis of the central pivot 7. This piston comprises at least one active face 24 moving within at least one chamber 8 to modify its volume. It comprises further cinematic means 37, 38, 41 imposing a relative rotation between the eccentric 31 and the control member 1.The walls 10, 11 of the chamber 8 are fast with the central pivot 7.

Abstract: The rotary piston engine has a rotatable annular cylinder and rotatable piston elements interconnected through a cross-linkage mechanism eccentrically arranged relative to the longitudinal axis of the annular cylinder for causing relative oscillatory motion between the piston elements and the annular cylinder. The cross-linkage mechanism has cross arms coupled through a cross connecting arm to the eccentric shaft such that the cross arms do not cross over in each revolution of the annular cylinder.

Abstract: A rotary piston-internal combustion engine has a stationary engine housing with a central axis. A rotor is positioned within the housing and includes a cylinder with first pistons integral with and spaced uniformly apart around the inner surface of the cylinder. The first pistons are sector-shaped. The rotor rotates at a constant velocity. A hub is located within the cylinder coaxial with the central axis and can rotate relative to the cylinder and first pistons. Second pistons are fixed to the hub and each extends radially outwardly from the hub between a pair of adjacent first pistons. Openings extend through the cylinder and are arranged symmetrically relative to axially extending central plane of the first pistons. Seals are provided around the openings between the outside surface of the cylinder and the interior of the housing.

Abstract: A two-cylinder rotary piston internal combustion engine. Two interengaging arcuate piston-cylinder assemblies move in a circular path on an engine plane. The piston of one assembly and the cylinder of the other assembly reciprocate with respect to each other. Two separate, at least partly hollow, rotating, support shafts are rigidly attached to each said piston-cylinder assembly, one on each side of the engine plane and perpendicular to that plane. Each rigidly attached to its piston-cylinder assembly. Two of these support shafts are concentric with a rotary power take-off shaft, while the other two support shafts are concentric with a flywheel shaft on the opposite side of the plane; the flywheel shaft carries a flywheel. A stationary engine casing surrounds the piston-cylinder assemblies and all the support shafts, with the flywheel shaft and power take-off shaft extending out therefrom.

Abstract: In a rotary internal combustion engine the cylinders forming the combustion chambers are circumferentially arranged in a rotatably mounted engine housing. The housing is fixed to the engine shaft which in turn is journalled for rotation in a supporting framework. A brake mechanism is provided for holding the pistons with respect to the supporting framework during a power stroke preventing retrograde movement of the pistons to thereby urge the housing and shaft to rotate. Upon cessation of the power stroke, the brake is released, the pistons rotate with the housing and a bias spring assembly is provided to urge the pistons into the cylinder in a compression stroke. The engine thus is continuously rotated to deliver power output at the shaft.

Abstract: An engine having valve means, timing means, fuel distribution means and ignition means configured for operation on a combustible mixture of fuel and air, or other energy source, comprises at least one annular cylinder and mating annular piston forming combustion chambers at both ends and configured for orbital rotation about a central crank. Escapement means transfers orbital rotation of the piston and cylinder in a first direction to the crank and prevents their rotation in the opposite direction relative to the grounded frame which encloses the engine. The piston and cylinder alternately are rotated in the first direction by expansion or contraction of the energy source in successively predetermined combustion chambers on each stroke to rotate the crank.

Abstract: A reciprocating piston device has its pistons and cylinders arranged in a circle, each piston and each cylinder being rotatable about a common shaft to which power is directed or, alternatively, to which power is supplied depending on the use to which the device is put. For example, the device may be a fluid pump, a fluid motor, a diesel engine, a two cycle engine, a four cycle engine, or the like. In a preferred embodiment, two pistons and two cylinders form a part of a first rotor and two other pistons and two other cylinders form a part of a second rotor. Each piston forming a part of one rotor is mounted for reciprocal movement within a cylinder of the other rotor.