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| Number | Title | Issue Date |
| 7673595 | Rotor-piston internal combustion engine The invention relates to an internal combustion engine comprising a rotor which is mounted in such a way that it can be rotated about a central axis in a housing, and in which cylinders are arranged in the same plane, pistons being introduced into said cylinders, th... | 03/09/2010 |
| 7421986 | Rotary radial internal combustion piston engine The engine comprises a housing, a rotor, which is mounted in the housing for rotation about its axis. The rotor has a pair radially opposite cylinders spaced radially and apart from its axis of rotation. A piston spaced in each of the cylinders. Gas intake and gas e... | 09/09/2008 |
| 7353784 | Rotary internal combustion engine A rotary internal combustion engine has a circular inner chamber, which houses a plurality of cylinders with reciprocating pistons that move in a radial direction towards and away from the center of the inner chamber. A flywheel with distinct vanes or portions is po... | 04/08/2008 |
| 7066115 | Internal combustion engine/hydraulic motor/fluid pump provided with opposite pistons An internal combustion engine has a pair of opposed pistons held within an elliptical guide of the engine housing. The pistons reciprocate within a cylinder attached to a shaft. A combustion chamber is formed within the shaft and positioned to be between the pistons... | 06/27/2006 |
| 7004119 | Apparatus and method for rotating sleeve engine hydrodynamic seal A hydrodynamic face seal 100 for sealing between the cylinder head 300 and rotating sleeve 200 of a rotating liner engine. The face of the face seal provides a sealing zone 130 for maintaining a lubricant layer of about 2 micrometers betw... | 02/28/2006 |
| 6988482 | Dual rotor internal combustion engine An engine including a housing formed with a pair of side-by-side intersecting substantially cylindrical cavities, and a pair of counter-rotating power rotors rotatably mounted within the cavities. The pair of power rotors include intermeshing lobes that each define ... | 01/24/2006 |
| 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 |
| 6904877 | Piston motion modifiable internal combustion engine An internal combustion engine (10) including at least two radial cylinders (17) disposed with their axes coplanar and equi-angular located relative to each other. The cylinders (17) meet to form a common combustion chamber (18). A piston ... | 06/14/2005 |
| 6895906 | Rotary two-stroke engine A rotary two-stroke engine including a multi-cylinder block rotatably mounted on two main bearings within an engine housing, a crankshaft journalled for rotation within said main bearings, indirectly geared at a ratio of 2:1 to said cylinder block and piston members... | 05/24/2005 |
| 6883473 | Radial motor/pump A radial motor or pump has a stator inside which a rotor rotates. The stator carries one or more radial cylinders in each of which a piston is slidable. The end of each cylinder or a ring slidable therein bears against and is a sealing rubbing fit with the internal ... | 04/26/2005 |
| 6615793 | Valveless revolving cylinder engine A revolving cylinder engine having a stationary fixed housing with circumferential intake and exhaust ports and an ignition means, a concentrically positioned revolving cylinder block bored centrally and radially with said radial bore defining a piston co... | 09/09/2003 |
| 6591791 | Spark-ignition rotary internal-combustion engine A spark-ignition rotary internal-combustion engine, having a plurality of pistons (7) which perform a reciprocating motion inside cylinders (6) arranged so as to be equally angularly spaced on a same circumference, the cylinders (6) being formed in a rota... | 07/15/2003 |
| 6536383 | Internal combustion rotary engine An internal combustion rotary engine of the type comprising a rotor, an output shaft as the rotor axis, crankshafts mounting on output shaft, pistons reciprocable in piston chambers within the rotor, piston rods connecting the pistons to the crank of cran... | 03/25/2003 |
| 6457443 | Valveless rotating cylinder internal combustion engine An efficient and powerful engine is obtained by incorporating within an engine housing at least one cylinder which is rotatable along the inner circumferential surface of the housing. The cylinder is mounted to a crank case. A piston rod extends from the ... | 10/01/2002 |
| 6253717 | Rotary engine A rotary internal combustion engine which has a rotating drum supported in a stationary housing is disclosed. The rotating drum has one bank of cylinders for taking in and compressing the fuel/air mixture and another bank of cylinders for generating power... | 07/03/2001 |
| 6240884 | Valveless rotating cylinder internal combustion engine An efficient and powerful engine is obtained by incorporating within an engine housing at least one cylinder which is rotatable along the inner circumferential surface of the housing. The cylinder is mounted to a crank case. A piston rod extends from the ... | 06/05/2001 |
| 6220208 | Combustion engine having a rotatable cylinder block Combustion engine of the Otto or diesel type, including a cylinder block having at least one cylinder in which a piston with a connecting rod connected thereto are movably provided. The at least one cylinder is arranged in a cylinder block which is rotata... | 04/24/2001 |
| 6167850 | Rotary combustion engine with pistons This invention relates to an apparatus for producing a rotary motion force by means of an internal combustion engine, rotary type with pistons in the circular rotor, consisting of a housing, a rotor with cylinder chambers containing pistons that is connec... | 01/02/2001 |
| 6148775 | Orbital internal combustion engine An orbital internal combustion engine including a pair of rigidly interconnected opposed cylinders having a pair of rigidly interconnected pistons reciprocally mounted therein with the pistons each including a rigid piston rod rotatably journaled to a cra... | 11/21/2000 |
| 6079376 | Fuel-injected piston combustion engine A fuel-injected piston combustion engine with centrally rotating cylinder block and cylinder arranged centrally therein, the rotating cylinder block being surrounded by a stationary housing which seals it off by sealing rings, the housing being provided w... | 06/27/2000 |
| 6062175 | Rotating cylinder internal-combustion engine An internal combustion engine comprises multiple cylinder blocks in series rotatablely mounted in a single casing. The cylinder blocks each define multiple cylinders along a circumferential portion of the cylinder block to receive a piston in each one. Th... | 05/16/2000 |
| 5967102 | Combustion engine construction A rotary combustion engine construction includes an engine block (20) defining a cylindrical inner space (22) in which a toothed ring portion is integrally attached with the engine block (20), and a cylindrical block (40) rotatably and snugly fitted in th... | 10/19/1999 |
| 5682843 | Rotary engine A two cycle radial engine assembly 10! includes a crankcase assembly 12! supporting an annular cylinder closure means 23! having a part-spherical sealing surface 26! against which the correspondingly formed outer ends of cylinders 19!, disposed ... | 11/04/1997 |
| 5671702 | Valve system in a rotary radial-piston engine On the rotary drive shaft (10) of a four-stroke engine is non-rotationally mounted a hub (11) supporting four cylinders (14) wherein pistons (16) are arranged for reciprocal movement radially towards the hub. The hub (11) is provided with a combustion cha... | 09/30/1997 |
| 5524577 | Rotary engine A radial engine assembly (10) includes a crankcase (12) supporting an annular cylinder closure means (23) having a part-spherical sealing surface (26). A crankshaft (11) supported by the crankcase (12) operates piston (32) within radial cylinders of a cop... | 06/11/1996 |
| 5375564 | Rotating cylinder internal combustion engine The reciprocating engine which is particularly useful as an internal combustion engine, comprises a housing (1) with, mounted to rotate about a first axis of rotation (7), a cylinder rotor (5) having three pairs of cylinders (15) which are angularly offse... | 12/27/1994 |
| 5365892 | Rotary internal combustion engine An internal combustion engine has at least one piston (15, 16) which moves back and forth in a cylindrical piston bore (13, 14) and drives a rotationally supported crankshaft (30) through a connection rod (24, 25). The piston bore (13, 14) is arranged in ... | 11/22/1994 |
| 5123394 | Rotary reciprocating internal combustion engine A rotary reciprocating internal combustion engine is disclosed and includes a rotor with a set of four pistons driving respective spaced apart cranks. Each of the ends of the rotating cranks extends through a bearing in support plates on the rotor and inc... | 06/23/1992 |
| 4741300 | Rotating cylinder internal combustion engine A valve-free engine of 4n (4, 8, 12, etc.) cylinders comprises a fixed inner assembly comprising a pair of sun gears, a fixed outer assembly comprising fore and aft elements and a rotatable intermediate assembly. Each outer assembly element has an intake ... | 05/03/1988 |
| 4649801 | Compound displacement mechanism for simplified motors and compressors A rotating and reciprocating positive displacement mechanism which draws in a metered volume of gas and then expands or compresses that quantity of gas before expelling it. The mechanism has useful application as a compressor, a compressed gas motor, an e... | 03/17/1987 |
| 4421073 | Rotating cylinder internal combustion engine An internal combustion rotary engine of the type comprising a rotor, an output shaft eccentric to the rotor, pistons reciprocable in and out in the rotor relative to its axis of rotation, and piston rods connecting the pistons to the shaft. This rotary en... | 12/20/1983 |
| 4413486 | Rotating cylinder external combustion engine A fluid pressure device of the type having reciprocating pistons disposed in associated cylinders formed in an engine block that rotates conjointly with a drive shaft mounted eccentrically to the spin axis of the engine block. The length of the piston str... | 11/08/1983 |
| 4407239 | Rotary engine An internal combustion rotary engine in which only a single spark plug is utilized to ignite fuel/air mixture located within a single cylinder. Within the cylinder is located a pair of pistons mounted in a back-to-back relationship. A power output shaft i... | 10/04/1983 |
| 4401062 | Rotary piston engine A rotor containing plural circumferentially spaced radial cylinders revolves in a concentric stationary housing around a fixed but adjustable profiled cam engaged by follower rollers on the connecting rods of pistons which reciprocate in the cylinders due... | 08/30/1983 |
| 4308836 | Manifold for rotary engines A cylindrical manifold consisting of two sections back to back, each section having various chambers, the first section having an intake and compression chamber and the second section having an intake, combustion, and exhaust chamber.... | 01/05/1982 |
| 4307695 | Rotary engine Disclosed is a rotary engine comprising a rotor, a plurality of pistons angularly mounted in the rotor, an actuator mounted for eccentric rotation relative to the axis of rotation of the rotor, a blower, a transverse actuator pin connecting each piston to... | 12/29/1981 |
| 4300487 | Rotary engine A lightweight rotary engine of novel design having a sealed inner portion that allows the engine to assume any attitude during operation. The bottommost portion of each piston contains a bearing roller that is urged against a fixed eccentric post which ca... | 11/17/1981 |
| 4291651 | Internal combustion engine A pump supplies pressurized lubricant to an internal combustion engine from an external reservoir through a closed loop system. Delivery channels extending through the crankshaft, connecting rod and other components, supply the pressurized lubricant to th... | 09/29/1981 |
| 4256061 | Two cycle rotary internal combustion engine and cylinder sealing ring arrangement therefor A two-cycle rotary internal combustion engine of the fuel injection type. A rotor having three radially disposed cylinders in equally spaced angular relation in a circular rim rotates in sealed rotation within a cylindrical stationary outer housing. The r... | 03/17/1981 |
| 4166438 | Machine with reciprocating pistons and rotating piston carrier A reciprocating piston machine useful as a pump, a hydraulic motor or an internal combustion engine has a plurality of cylinders in a carrier surrounding a central shaft. The carrier is in turn surrounded by a ported manifold. The carrier and manifold are... | 09/04/1979 |
