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| Number | Title | Issue Date |
| 7421998 | Modular engine An engine is shown and disclosed having individual components that can be optimized depending upon the situation, application or desired performance of the engine. The individual components perform the intake, compression, combustion, expansion and exhaust elements ... | 09/09/2008 |
| 7311077 | Rotary positive displacement machine with orbiting piston A casing has a circular cylindrical internal surface delimiting an operating chamber. An orbiting piston is mounted so as to orbit about a chamber axis which is the axis of the internal surface. The orbiting piston has a circular cylindrical external surface, a gene... | 12/25/2007 |
| 7188602 | Concentric internal combustion rotary engine An internal combustion rotary engine includes a housing having an inlet and an outlet and a rotatable rotor centrally mounted within the housing. The rotor includes a plurality of pockets located about its circumference, the rotor further being connected to a rotor ... | 03/13/2007 |
| 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 |
| 6978758 | High Efficiency rotary piston combustion engine A computer controlled rotary piston engine includes a blower housing containing a rotatable impeller assembly, for pushing ambient air into the housing, and forcing the air to pass through a normally open valve mechanism into a combustion chamber. A plurality of fue... | 12/27/2005 |
| 6886527 | Rotary vane motor A rotary vane motor uses a gear train arrangement for controlling the position of the vanes as well as the compression ratio of the motor. The motor includes a first pair of vanes namely a leading and trailing vane defining a working chamber therebetween and an oppo... | 05/03/2005 |
| 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 |
| 6352063 | Rotary piston machines A rotary piston machine adapts the Stirling principle and can operate as an engine or a heat pump. Two variable volume units (1,4) have n-lobed chambers (3,6) rotatable about a common axis at a first speed. Each chamber contains an (n+1) sided piston (2,5... | 03/05/2002 |
| 6273055 | Rotary engine A combustion engine comprised of (i) at least one compression stage, (ii) at least one combustion unit, and (iii) at least one expansion stage is described. The compression and expansion stages include tongue and groove cylindrical rotors in sealing relat... | 08/14/2001 |
| 5819699 | Rotary internal combustion engine An improved rotary combustion engine is provided with a cylindrical intake and compression housing and a cylindrical combustion and exhaust housing. Each of the housings contain variable volume spaces defined by the inner surface of elliptically shaped op... | 10/13/1998 |
| 5419288 | Spherical piston radial action engine A rotary internal combustion engine comprising a housing containing a rotatable cylinder having a circular wall containing at least two rows of radially extending circular passageways forming compression and power engine cylinders, respectively, displaced... | 05/30/1995 |
| 5257599 | External-internal rotary combustion engine An internal combustion engine in which various engine functions are carried out simultaneously rather than sequentially with the result that engine operation is smoother, less subject to vibrational forces, and has greater efficiency due to the eliminatio... | 11/02/1993 |
| 5251593 | Thermodynamic liquid ring machine A liquid ring machine comprises an outer drum having a cylindrical outer wall 1 surrounding a central axis 2, a vaned rotor 3 rotatable within the drum about an axis 4 which is parallel to, but offset from, the central axis 2 of the drum, and a liquid dis... | 10/12/1993 |
| 5133317 | Rotary piston engine A rotary piston engine is shown which includes a housing (22) having a cylindrical working chamber with inlet (88) and exhaust (86) ports. First and second piston assemblies (30 and 32) each of which includes at least one pair of diametrically wedge-shape... | 07/28/1992 |
| 5101782 | Rotary piston engine with slide gate A rotary piston engine comprising two segregated body chambers of compression and expansion, and one separable combustion chamber, carrying out air suction and compression, combustion resultant expansion and exhaust, and fuel injection and constant-volume... | 04/07/1992 |
| 5094205 | Scroll-type engine A scroll-type engine includes an orbiting member situated inside the interior volume of the engine to define a compression chamber and an expansion chamber. The orbiting member includes an aperture for transferring an air and fuel mixture from the compres... | 03/10/1992 |
| 5083540 | Rotary engine This invention relates to improvements on rotary engines having annular cylinders, each having at least two pistons drivable in rotation therein, the pistons being fixed respectively to concentric shafts that are thereby independently rotated around their... | 01/28/1992 |
| 4901694 | Rotary engine A rotary engine includes separate compressor and combustion sections which are interconnected. Each section includes a cylinder formed with a cylindrical working chamber containing a pair of pistons rotatable about the cylinder axis. The pistons are attac... | 02/20/1990 |
| 4699101 | Volumetric displacement fluid machine This machine can serve as a compressor or motor and, more specifically combines a compressor and a motor to constitute an internal combustion engine with compressed air injection. A toothed rotor is rotatable in a fluid displacement chamber and in sealing... | 10/13/1987 |
| 4566411 | Split cycle engine The improved split cycle engine comprises a compression unit 1 mechanically connected to an expansion unit 3 via shaft 2 and to a load via a coupling or centrifugal clutch 5, and a second compression unit 7 which is mechanically connected by shaft 9 to a ... | 01/28/1986 |
| 4553513 | Thermodynamic rotary engine A thermodynamic rotary engine (2) comprising a positive displacement compressor (4), a combustion chamber (6) in which air from the compressor and fuel are burnt, and a rotatable cyclicly operating gas expander (10) for receiving combustion gas from the c... | 11/19/1985 |
| 4249492 | Constant torque rotary engine An internal combustion engine is provided which includes a compression bank and an expansion bank each of which include a toroidal cylinder and at least a pair of cooperating pistons within each cylinder. The pistons define expanding and contracting chamb... | 02/10/1981 |
