Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 8056528 | Radial axis, spherical based rotary machines A rotary machine which can be either a pump or an internal combustion engine has a housing enclosing a plurality of rotor spindles lying on the surface of an imaginary cone for driving an output shaft positioned at the vertex of the imaginary cone. The spindles have... | 11/15/2011 |
| RE41373 | Rotary engine A rotary engine having a housing and a first and second intersecting cavity disposed therein. The rotary engine includes a rotor rotatably mounted in the first cavity, the rotor and the housing defining an annular chamber therebetween, and a piston extending radiall... | 06/15/2010 |
| 7404381 | Radial impulse engine, pump, and compressor systems, and associated methods of operation Radial impulse engine, pump, and compressor systems are disclosed herein. In one embodiment of the invention, a radial impulse engine includes first and second movable V-members operably disposed between first and second end wall portions. The first V-member can hav... | 07/29/2008 |
| 7392768 | Radial impulse engine, pump, and compressor systems, and associated methods of operation Radial impulse engine, pump, and compressor systems are disclosed herein. In one embodiment of the invention, an engine includes a first end wall portion spaced apart from a second end wall portion to at least partially define a combustion chamber therebetween. In t... | 07/01/2008 |
| 7341042 | Rotary positive displacement control system and apparatus A rotary positive displacement control system and apparatus includes a transmission assembly, at least a compression assembly and buffer assembly, and an expansion assembly, the buffer assembly disposed between the compression and expansion assembly. The compression... | 03/11/2008 |
| 7335005 | Gear pump with prestressed gear teeth A gear pump, in particular for pumping material such as rubber mixes, includes an enclosure in which a central gear wheel and two peripheral gear wheels rotate. Teeth of the central gear wheel mesh with teeth of both peripheral gear wheels to pump material from an i... | 02/26/2008 |
| 7328672 | Radial impulse engine, pump, and compressor systems, and associated methods of operation Radial impulse engine, pump, and compressor systems are disclosed herein. In one embodiment of the invention, an engine includes a first end wall portion spaced apart from a second end wall portion to at least partially define a combustion chamber therebetween. In t... | 02/12/2008 |
| 7325517 | Radial impulse engine, pump, and compressor systems, and associated methods of operation Radial impulse engine, pump, and compressor systems are disclosed herein. In one embodiment of the invention, an engine includes a first end wall portion spaced apart from a second end wall portion to at least partially define a combustion chamber therebetween. In t... | 02/05/2008 |
| 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 |
| 7059294 | Orbital engine An engine is disclosed including at least one piston which is positioned within a toroidal piston chamber. A method of operating an engine is disclosed wherein a piston is advanced in a toroidal piston chamber past a first valve and the first valve is closed to form... | 06/13/2006 |
| 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 |
| 6935300 | Rotary engine A rotary engine having a housing and a first and second intersecting cavity disposed therein. The rotary engine includes a rotor rotatably mounted in the first cavity, the rotor and the housing defining an annular chamber therebetween, and a piston extending radiall... | 08/30/2005 |
| 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 |
| 6814045 | Rotary internal combustion engine There is provided a rotary internal combustion engine (20) comprising a plurality of rotors (21) each having a plurality of lobes (22) for intermeshing with lobes of other rotors to form successive combustion chambers. Axial seal elements (60... | 11/09/2004 |
| 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 |
| 6543406 | Rotary piston combustion engine The invention relates to a 4-phase rotary piston combustion engine. The embodiment of the engine consists of the engine body (1) where the main cylinder (2) is located; the piston (4) which revolves in the main cylinder and a cylindrical piston body is a ... | 04/08/2003 |
| 6488004 | Toroidal internal combustion engine and method for its thermo-stabilization A thermal design and method of operation of a rotary internal combustion engine having at least one housing, a rotor rotating within the housing, and a mechanism for combusting mixture of fuel air and steam supplied into the housing to drive the rotor, in... | 12/03/2002 |
| 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 |
| 6250277 | Toroidal internal combustion engine A rotary engine with one or more toroidal chambers defined by rotors that rotate within cylindrical housings. Pistons project into the chambers from the rotors. The pistons cooperate with valves to define compression regions and expansion regions in the c... | 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 |
| 5595154 | Rotary engine A rotary engine is provided with a rotary piston that is rotatively mounted within a housing. The rotary piston includes a surrounding circumferential edge that is provided with a series of distinct depressions formed therein. Formed in the housing outwar... | 01/21/1997 |
| 5357923 | Rotary piston internal combustion engine A rotary piston internal combustion engine, includes a common housing; a stationary hollow hub; two rotary piston systems in the housing, each system including at least one piston rotor having partial cylindrical areas and front areas, the second rotary p... | 10/25/1994 |
| 4316439 | Rotary engine with internal or external pressure cycle Disclosed herein is a rotary engine operable as an internal combustion engine or powered from an external source, the engine comprising essentially three parts: (1) an outer housing or body, (2) a valve shaft extending axially through the body and having ... | 02/23/1982 |
| 4235217 | Rotary expansion and compression device A rotary gas expansion and compression device having a pair of rotors provided respectively with external and internal flutes differing in number by one, the form of which provides a continuous vertical contact. The rotors are meshed so that they form clo... | 11/25/1980 |
| 4086880 | Rotary prime mover and compressor and methods of operation thereof A readily reversible, rotary type internal combustion engine which is selectively operable as a compressor and capable of several basic modes of operation, wherein an expansible combustion chamber or volume cyclically initiated from zero volume is chargea... | 05/02/1978 |
| 4083663 | Rotary engine with pistons and lenticular valves A rotary machine with lenticular pistons and valves usable for internal and external combustion engines, expansion motors and pumps. A flat central stator housing is provided with two lateral cover housings. A plurality of rotating elements enclose the in... | 04/11/1978 |
| 4057035 | Internal combustion engines An internal combustion engine wherein a rotor is turnable within a housing while having an outer periphery which defines a circular channel with an inner periphery of the housing, the rotor having a pair of diametrically opposed projections end surfaces o... | 11/08/1977 |
