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| Number | Title | Issue Date |
| 7441534 | Rotary engine system This rotary internal combustion engine has two rotatable vane type pistons mounted for axial rotation in a sealed casing. In an exemplary cycle, one piston is released to rotate at or prior to initiating combustion in the combustion space between the two pistons, wh... | 10/28/2008 |
| 7435064 | Oscillating piston machine The invention relates to an oscillating piston machine, comprising a housing which has an essentially spherical housing inner wall, four pistons which rotate together about an axis of rotation which is approximately in the center of the housing being arranged in the... | 10/14/2008 |
| 7353796 | Rotary machine The rotary machine can be used as a rotary internal combustion engine and as a pneumatic or hydraulic pump. The rotary machine comprises a housing in the form of two intersecting cylinder parts of different diameters having parallel axes. A rotor is received in the ... | 04/08/2008 |
| 7347676 | System for the construction of pumps, compressor, and motor engines, formed by a rotary chamber and pistons which are driven in the same direction at varying velocities alternatively opposite to each other, inside a fixed open or closed structure A system includes a rotary chamber and pistons that move in the same direction at varying and alternatively opposite velocities to each other inside a fixed structure. The chamber is rotatively formed by two rotary partial-chambers, each partial-chamber having a pis... | 03/25/2008 |
| 7258082 | Oscillating-piston machine An oscillating-piston machine comprises a housing, in which a first and at least a second piston are arranged, which pistons can together revolve in the housing about an axis of rotation that is fixed with respect to the housing, and which pistons, as they revolve a... | 08/21/2007 |
| 7222601 | Rotary valveless internal combustion engine A rotatably alternating air or water cooled two-stroke internal combustion engine comprising a cylindrical casing, and a rotor comprising two radially extending vanes affixed to a shaft rotatably mounted within the casing upon two end plates. Two longitudinally exte... | 05/29/2007 |
| 7182061 | Rotary internal combustion engine A rotary internal combustion engine comprising at least one but preferably a plurality of two operating chambers each having a toroidal path of travel on an interior thereof and an interactive piston assembly comprising a pair of first or driven pistons connected to... | 02/27/2007 |
| 7156068 | Rotary combustion engine The aim of the invention is to dispense with the disadvantages of previous engines either fully or partially. This is achieved by two cylindrical parts which rotate into each other, respectively possessing a wing and which can rotate about an axis of different speed... | 01/02/2007 |
| 6991441 | Expansible chamber device having rotating piston braking and rotating piston synchronizing systems An expansible chamber device includes a braking system with a set of cam surfaces on the piston assemblies and a set of movable members adapted to alternately engage first and second sets of cam surfaces to stop the rotation of first piston assembly while permitting... | 01/31/2006 |
| 6962137 | Two-cycle rotary engines Two-cycle, single vane impeller, hinged hub rotary engines are simple embodiments of a new class of engines. The 2-cycle, hinged hub rotary engines have dependently rotating impellers with, interdigitated, alternating hub sections, a hinge like rotation joint. These... | 11/08/2005 |
| 6948473 | 4-cycle, rotary, electromagnetic, internal combustion engines Four-cycle rotary engines, with an even number of hinged-hub impeller vanes, utilize dependently rotating, joined, hinged-hub impellers, with interdigitated, alternating hub sections, on a shared, power output shaft, and electromagnetic fields, and timing of impelle... | 09/27/2005 |
| 6668787 | Internal combustion engine There is provided an internal combustion engine (10) having a housing (11,12,13) and a rotor arrangement (21,22,34) which is mounted for oscillating rotary movement within the housing. The housing provides at least one compression chamber (14) and at leas... | 12/30/2003 |
| 6626643 | Twin vane pump apparatus for dispensing meat products An apparatus and method for producing predetermined quantities of a meat product, inc which the apparatus comprises a twin vane concentric pump with an inlet and an outlet circumferentially spaced from one another, and a pair of independently movable vane... | 09/30/2003 |
| 6457451 | Rotary piston engine A rotary piston engine (20) is shown that includes a housing (22) having a toroidal working chamber with inlet (56) and exhaust (54) ports. First and second piston assemblies (30 and 32), each of which includes at least one pair of diametrically opposed p... | 10/01/2002 |
| 6341590 | Rotary engine A rotary engine including a static toroidal cavity having an inlet port for introducing fuel and air to the cavity and an outlet port for exhausting products of combustion from the cavity. A first power train including a first output shaft and a second po... | 01/29/2002 |
| 6321693 | Reciprocating rotary piston system and pressure pump and internal combustion engine using the same A reciprocating rotary piston system includes a cylinder (3) having an annular and hollow interior; a plurality of pistons (1A to 1D) of which first and second parties are formed to be disposed alternately on the same inner circumference of the cylinder, ... | 11/27/2001 |
| 6257196 | Rotary disc engine A rotary internal combustion engine comprising a generally cylindrical shaped rotor housing, a pair of cylindrical shaped rotary discs having inner and outer concentric members and a plurality of spaced apart vanes connecting the inner and outer concentri... | 07/10/2001 |
| 6158987 | Power unit for use as a pressure-fluid operated motor and/or a pressure fluid pump A power unit for use as a pressure-fluid-operated motor and/or a pressure fluid pump, the power unit comprising a cylinder space, pistons movable in the cylinder space and channels for pressure fluid. The cylinder is annular and the pistons extend radiall... | 12/12/2000 |
| 6132190 | Rotary device A rotary device for use in pumping applications or as an internal combustion engine is disclosed. The rotary device includes a cylinder and first and second axles that rotate within the cylinder. Each axle has a fin set with at least one fin subdividing t... | 10/17/2000 |
| 6036461 | Expansible chamber device having rotating piston braking and rotating piston synchronizing systems An expansible chamber device includes a rotating piston braking system and a rotating piston synchronizing system. The rotating piston braking system controls the motion of the expansible chamber device piston assemblies to cause intermittent rotation of ... | 03/14/2000 |
| 5569027 | Lobed rotor machine A lobed rotor machine including an annular cylinder chamber having inlet and outlet openings, four working pistons movable in pairs in the cylinder chamber, two piston carriers for supporting respective pairs of the working cylinder and rotatable about a ... | 10/29/1996 |
| 5484272 | Rotary internal combustion engine This application discloses an internal combustion engine comprising a hollow cylindrical body member, two pairs of vanes mounted in said body member for rotation coaxially therewith, whereby to divide the body member into four chambers, the vanes of each ... | 01/16/1996 |
| 5429085 | Timing mechanism for rotary engines A rotary internal combustion engine including a housing and two vanes mounted on concentric shafts for independent rotation in one direction within the housing in response to combustion within the housing. The engine further includes a ratchet assembly, i... | 07/04/1995 |
| 5400754 | Rotary internal combustion engine with paddle and ratchet assembly A rotary internal combustion engine, has an engine block defining a drum-shaped combustion chamber. A rotatable propeller shaft extends axially through the chamber. First and second paddle and hub devices are freely rotating on the propeller shaft at leas... | 03/28/1995 |
| 5330333 | Indexing rotary actuator with clutch pistons An indexing rotary actuator is provided for unidirectionally rotating an output shaft through a specific angle per each indexing operation accurately without cumulative error. A pair of symmetrical housing members are mounted together to form an actuator ... | 07/19/1994 |
| 5199391 | Toroidal internal combustion engine 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 pow... | 04/06/1993 |
| 5192201 | Rotary engine and drive coupling A rotary engine includes a pair of rotors each supporting opposed toroidal section pistons rotatably disposed within a crank case defining a toroidal combustion chamber. The piston rotors define pluralities of curved slots which receive interconnecting co... | 03/09/1993 |
| 4949688 | Rotary internal combustion engine An internal combustion engine rotary engine includes four pistons mounted for rotary movement in an annular piston chamber, a drive shaft disposed at an angle of 30° to 80° relative to the piston axis of rotation, and two drive rod assemblies interconne... | 08/21/1990 |
| 4890591 | Rotary internal combustion engine and method of starting the engine A rotary internal combustion engine including a housing defining a combustion chamber; a first vane mounted for rotation in the combustion on a fixed axis; a second vane mounted for rotation in the combustion chamber on the fixed axis independently of the... | 01/02/1990 |
| 4744736 | Compound rotary internal combustion engine An internal combustion engine of the rotary type in which a pair of axially spaced combustion chambers are provided and a common ratchet or control mechanism is positioned between the spaced combustion chambers. A pair of vanes are mounted in each combust... | 05/17/1988 |
| 4666379 | Co-rotor engine and drive apparatus A rotary drive apparatus having a drive shaft driven by a pair of start-and-stop rotary elements. Each element has a plurality of angularly spaced vanes which are interspersed with associated vanes on the drive shaft to form substantially sealed fluid cha... | 05/19/1987 |
| 4664078 | Continuously rotating internal combustion engine A substantially continuously rotating internal combustion engine. The engine has a rotatable casing with a hollow cylindrical interior cavity which includes one or more partition members. A shaft and vane assembly is also held within the cavity, and the s... | 05/12/1987 |
| 4655695 | Rotating fluid driven rotary actuator A substantially continuously rotating fluid driven rotary actuator. The actuator provides a rotary output in one direction. The turning force is generated by the opposite motion of a vane within a partitioned chamber. Rotary movement is controlled in the ... | 04/07/1987 |
| 4450802 | Internal combustion engines and rotary volumetric compressors This invention relates to rotary compressors or rotary engines, and comprises essentially a cylindrical rotor mounted concentrically within a cylindrical casing with an annulus therebetween. A plurality of cylindrical rollers revolve through the annulus t... | 05/29/1984 |
| 4398512 | Internal combustion engines and rotary volumetric compressors This invention relates to rotary compressors or rotary engines, and comprises essentially a cylindrical rotor mounted concentrically within a cylindrical casing with an annulus therebetween. A plurality of cylindrical rollers revolve through the annulus t... | 08/16/1983 |
| 4390327 | Alternating rotor motor with rotor positioning sensors The present invention provides a rotary motor in which first and second coaxial opposing rotors mounted on independent rotor shafts are adapted to rotate within a housing. Each of the rotor shafts is provided with a fixed spring clutch and a free spring c... | 06/28/1983 |
| 4373879 | Alternating rotor motor with spring clutches The present invention provides a rotary motor in which first and second coaxial opposing rotors mounted on independent rotor shafts are adapted to rotate within a housing. Each of the rotor shafts is provided with a fixed spring clutch and a free spring c... | 02/15/1983 |
| 4359980 | Rotating piston engine with constant torque arm drive of its power take-off shaft 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 ot... | 11/23/1982 |
| 4319551 | Rotary internal combustion engine A rotary internal combustion engine has as its principal components (in one embodiment): a drive shaft; two annular carrying walls, each supporting at least two arcuate pistons, the carrying walls being mounted upon the drive shaft through inner one way c... | 03/16/1982 |
| 4279577 | Alternating piston rotary engine with latching control mechanism and lost motion connection This invention deals with an improved rotary engine of the rotating abutment type and, more particularly, with a unique movement control mechanism which is suitable for use with such an engine. An engine of this type is equipped with two of these movement... | 07/21/1981 |
