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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 |
| 7350501 | Planetary rotary internal combustion engine An apparatus for a rotary internal combustion engine. The engine has three rotating members that orbit about the center of a three-armed rotor as the rotor rotates within a housing with three lobes. The tips of the rotating members engage the lobes and a circular cu... | 04/01/2008 |
| 7227102 | Food warming apparatus and method An oven for transferring heat to food in trays and a method for using the oven. The oven includes a cabinet with partitions dividing the interior into a plurality of separate, thermally isolated holding compartments each adapted for removably receiving a tray of foo... | 06/05/2007 |
| 7201134 | Parallel rotary engine This rotary engine is made up of three parallel encased rotors; a male rotor, flanked by a female compression/combustion rotor, and a female separation rotor, all three coupled for synchronous rotation. The male rotor has lobes projecting from it, which mesh with co... | 04/10/2007 |
| 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 |
| 7185625 | Rotary piston power system The rotary piston power system includes a housing having a drum and a cover rotatably mounted on the drum. The drum has high pressure and low pressure ports defined in its peripheral wall and a central separator wall having arcuate end faces and a pair of semicylind... | 03/06/2007 |
| 7111606 | Rotary positive displacement device A device to convert energy having exterior and interior rotors where the number of legs (Λ) of an interior rotor divided by the number of chambers (X) defined by the fins of the outer rotor is equal to the effective radius of the inner reference circle ri | 09/26/2006 |
| 7100566 | Operating method for a rotary engine and a rotary internal combustion engine The invention relates to propulsion engineering and particularly to internal-combustion engines. The problem solved by the present invention is improving fuel efficiency and ecological compatibility, as well as providing the ability to set advance ignition at higher... | 09/05/2006 |
| 7044102 | Planetary rotary internal combustion engine An apparatus for a rotary internal combustion engine. The engine has three rotating members that orbit about the center of a three-armed rotor as the rotor rotates within a housing with three lobes. The tips of the rotating members engage the lobes and a circular cu... | 05/16/2006 |
| 7032565 | Rotary combustion engine with lateral thrust between opposing and engaging combustion flywheels A modular revolving cylinder engine including at least two interdependent flywheels driven in rotation by a driving device (1) that rotates them in synchronization and in opposite directions. Each flywheel includes a plurality of equally spaced hollow pushrod... | 04/25/2006 |
| 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 |
| 6955153 | Asymmetric compete expansion rotary engine cycle A thermodynamic cycle for an internal combustion rotary engine is disclosed which achieves high efficiency through an asymmetry between the volume of air charge before compression and the volume of expanded air at the completion of expansion. The expanded volume is ... | 10/18/2005 |
| 6945217 | Rotary machine Rotor having a pair of parallel side surfaces and a cured perimeter surface therebetween formed of contiguous mutually tangential curves each including a major portion defining a first major arc subtending a predetermined angle at a predetermined center of rotation,... | 09/20/2005 |
| 6932047 | Planetary piston rotary engine An apparatus for a rotary internal combustion engine. The engine has three rotating members that orbit about the center of a three-armed rotor as the rotor rotates within a housing with three lobes. The tips of the rotating members engage the lobes and a circular cu... | 08/23/2005 |
| 6907855 | Geroter type internal combustion engine An internal combustion engine including a housing, an intake port defined in the housing, an exhaust port defined in the housing, and a generally cylindrical combustion chamber defined in the housing. The combustion chamber communicates with the intake port and the ... | 06/21/2005 |
| 6886528 | Rotary machine At least two rotors are mounted in a chamber and rotate synchronously to compress and/or transport fluid. The chamber has the shape of partially overlapping circles with each circle intersecting the center of the adjacent circle. The rotors are non-eccentric and hav... | 05/03/2005 |
| 6877476 | Internal combustion engine An apparatus that can be utilized as an internal combustion engine, a compressor, a pump or the like has an indexer which defines a plurality of slots. A pinwheel has a plurality of pins which, when the pinwheel and the indexer are rotated, engaged a respective slot... | 04/12/2005 |
| 6868822 | Rotary piston engine A non-reciprocating engine comprising a hollow cylindrical shaft driver (13) located in a cylindrical stator cavity (14) of a stator. A number of expansion chambers (43) form between the outer wall of the shaft driver, the stator wall and movabl... | 03/22/2005 |
| 6782866 | Rotary machine and thermal cycle A rotary machine having a housing with rotary components disclosed within. The rotary machine is configurable as an internal combustion rotary engine, an external combustion rotary engine, a gas compressor, a vacuum pump, a liquid pump, a drive turbine, or a drive t... | 08/31/2004 |
| 6684825 | Rotary machine and thermal cycle A rotary machine having a housing with rotary components disclosed within. The rotary machine is configurable as an internal combustion rotary engine, an external combustion rotary engine, a gas compressor, a vacuum pump, a liquid pump, a drive turbine, o... | 02/03/2004 |
| 6672274 | Rotary piston internal combustion engine A rotary internal combustion engine has a housing and a working wheel mounted rotatably in the housing. At least one working piston is provided on the working wheel for taking in and compressing air or a fuel-air mixture and for converting gas pressure re... | 01/06/2004 |
| 6672275 | Rotary machine and thermal cycle A rotary machine having a housing with rotary components disclosed within. The rotary machine is configurable as an internal combustion rotary engine, an external combustion rotary engine, a gas compressor, a vacuum pump, a liquid pump, a drive turbine, o... | 01/06/2004 |
| 6655344 | Rotary gear device A rotary gear device comprises a housing a preferably multiple pairs of rotatable meshing gears in coaxial relation defining spaced teeth which extend helically in the direction of the axis of each gear. First chambers are formed by the meshing gears whic... | 12/02/2003 |
| 6604503 | Rotary machine A rotary machine in which plural, non-cylindrical rotors are provided for rotation within partially overlapping cylindrical bores, formed within a machine housing. Each rotor each said rotor has a curved outer surface formed of a plurality of contiguous m... | 08/12/2003 |
| 6484687 | Rotary machine and thermal cycle A rotary machine having a housing with rotary components disclosed within. The rotary machine is configurable as an internal combustion rotary engine, an external combustion rotary engine, a gas compressor, a vacuum pump, a liquid pump, a drive turbine, o... | 11/26/2002 |
| 6481410 | Rotary piston engine/positive displacement apparatus An engine displacement device including a casing with two internal overlapping rotor chambers, and rotors within the rotor chambers which are arranged to contra rotate to provide internal combustion and/or compression chambers. The casing provides for pri... | 11/19/2002 |
| 6250278 | Rotary machine A rotary machine in which plural, cylindrical rotors are provided for rotation within partially overlapping cylindrical bores, formed within a machine housing. The rotors are eccentrically mounted for synchronized, same directional rotation, within their ... | 06/26/2001 |
| 6129067 | Rotary engine An improved rotary engine (12), wherein the improvement comprises a facility (58) for transferring any remaining exhaust gases from a first center well (16) in a housing (14) of the engine (12) into a cavity (34) of a second rotor (32) in a second well (1... | 10/10/2000 |
| 6014953 | Rotary spark ignited internal combustion engine A rotary internal combustion engine comprises a pair of rotors having a plurality of vanes that intermesh and are located in a single stationary chamber. A central intake conduit provides fresh air upstream of the intermeshing vanes. The air is compressed... | 01/18/2000 |
| 5845617 | Rotary gear pump with vanes A rotary gear pump comprises a housing and at least a pair of rotatable, meshing gears positioned within the housing. The meshing gears define spaced teeth which extend helically in the general direction of the axis of each gear rotation. A flow inlet and... | 12/08/1998 |
| 5720251 | Rotary engine and method of operation A rotary engine having an outer rotor on outer rotor bearings and an inner rotor within the outer rotor mounted on inner rotor bearings, the outer rotor axis being offset relative to the inner rotor axis, a housing enclosing the inner and outer rotors, ge... | 02/24/1998 |
| 5341782 | Rotary internal combustion engine A rotary internal combustion engine includes four generally oval-shaped rotors which rotate in the same angular direction at the same angular speed. The peripheries of adjacent rotors rotate past one another to confine a working volume therebetween. Two o... | 08/30/1994 |
| 4934325 | Rotary internal combustion engine Four adjacent parallel rotors of elliptical cross section have hollow interior flow passages communicating through hollow supporting shafts at one end. The supporting shafts at the opposite ends of the rotors have eccentric crank pins received in bearing ... | 06/19/1990 |
| 4877385 | Positive displacement rotary mechanism A positive displacement rotary mechanism has four identical rotary helical intermeshing lobes that cooperate with a stationary cylindrical member extending centrally thereof to define repetitive working space internal of the lobes having boundaries along ... | 10/31/1989 |
| 4860705 | Positive displacement rotary mechanism A positive displacement rotary mechanism has three and alternatively four identical rotary helical intermeshing lobes of continuously varying pitch that cooperate with a stationary cylindrical member extending centrally thereof to define a repetitive work... | 08/29/1989 |
| 4841930 | Positive displacement rotary mechanism A positive displacement rotary mechanism has three identical rotary helical intermeshing lobes that cooperate with a stationary cylindrical member extending centrally thereof to define a repetitive working space internal of the lobes having boundaries alo... | 06/27/1989 |
| 4782802 | Positive displacement rotary mechanism A positive displacement rotary mechanism has three and alternatively four identical rotary helical intermeshing lobes that cooperate with a stationary cylindrical member extending centrally thereof to define a repetitive working space internal of the lobe... | 11/08/1988 |
| 4702206 | Rotary positive displacement machine A rotary positive displacement machine, and more particularly an internal combustion engine in one of its simplest of many forms, has a housing 1 with inner walls closely surrounding four similar rotors 2,3,4 and 5 arranged in a symmetrical `square` forma... | 10/27/1987 |
| 4666383 | Rotary machine Rotary machines of the type having a fluid chamber of changing volume, e.g. as ion an engine or pump, in which two rotors rotate in the same direction; a cylindrical surface of the first rotor of substantial arcuate extent, of radius substantially equal t... | 05/19/1987 |
| 4640242 | Rotary engine A rotary engine has covers spaced from one another, rotors located between the covers and planetating in different phases, gearings for synchronizing planetating of the rotors and including first and second gears, a plurality of carriers each connected wi... | 02/03/1987 |
