Class 123/200 - ROTARY

Subclass of Class 123 - Internal-combustion engines
Definition: Apparatus having a cylinder structure enclosing a piston
No. of patents: 28
Last issue date: 05/10/2011

Number	Title	Issue Date
7938097	Low speed valveless horizontally opposed piston rotary internal combustion engine Presented is a very low speed, high torque, horizontally opposed, rotary, valveless, Otto cycle piston engine producing four power strokes per revolution, the engine consisting of a fixed engine case assembly having upper and lower plates, the engine rotor assembly ...	05/10/2011
7669577	Gerotor and method of assembling the same A gerotor and methods for assembling the gerotor are disclosed. The gerotor includes a pump housing having a channel and a rotor positioning cavity, a pump shaft, an inner rotor, and an outer rotor. The pump shaft has central pump shaft axis and the inner rotor has ...	03/02/2010
7434563	Rotary engine The rotary engine includes a cylinder body having a cylinder chamber, an intake port, an exhaust port, and a spark plug, and a rotor which is received in the cylinder chamber to eccentrically rotate while coming into contact at seal faces thereof with an inner circu...	10/14/2008
7415961	Piston for internal combustion engine, compressor or the like A piston for internal combustion engine, compressor or the like, includes a piston ring, a piston skirt having a piston skirt wall. One or more lubricant channels and reservoirs are provided on an outer surface of the piston skirt. Lubricant is conducted to an outer...	08/26/2008
7398757	Toroidal engine method and apparatus A rotary motion device having piston valves that define an open region that are adapted to engage a power tooth of the power ring as the power ring rotates around the piston valves and the piston valves rotate about their own separate axis that is fixed with respect...	07/15/2008
7398756	Bottom plate for a crankcase In a bottom plate for closing a crankcase of an internal combustion engine wherein the bottom plate includes openings and channels for collecting and conducting fluids, the bottom plate consists of a number of individual plates which are joined together after the ch...	07/15/2008
7389763	Cylinder block integrated with crankcase A structure of crankcase-integrated cylinder block for a small internal combustion engine is posed to increase strength and rigidity in order to reduce particularly vibration and noise. A cylinder part and a crankcase part are formed into a box-like shape being cast...	06/24/2008
7357115	Wafer clamping apparatus and method for operating the same A wafer clamping apparatus is provided to secure a wafer within a chamber during wafer processing. The wafer clamping apparatus creates a pressure differential between a top surface and a bottom surface of the wafer. The pressure differential serves to pull the wafe...	04/15/2008
7350500	Inverted cardioid engine An internal combustion engine comprising a support structure, including a tube and a hollow stator core, supported by and rigidly affixed to the tube. Additionally, a rotor assembly is eccentrically and rotatably mounted about the stator core and having a pair of pa...	04/01/2008
7341040	Supercharged two-cycle engines employing novel single element reciprocating shuttle inlet valve mechanisms and with a variable compression ratio This invention relates to novel reciprocating shuttle inlet valves, effective with every type of two-cycle engine, from small high-speed single cylinder model engines, to large low-speed multiple cylinder engines, employing spark or compression ignition. Also permit...	03/11/2008
7281513	Inverted Wankel An internal combustion engine comprising a support structure, including a tube and a hollow stator core, supported by and rigidly affixed to the tube. Additionally, a rotor assembly is eccentrically and rotatably mounted about the stator core and having a pair of pa...	10/16/2007
7051698	Rotary drive mechanism A rotary drive mechanism for use as a motor, pump or compressor. The mechanism includes a housing having a chamber defined by a peripheral wall. A rotor is rotatably mounted in the chamber and has two longitudinal seal edges in contact with the wall. The rotor is mo...	05/30/2006
7052420	Over-running clutch pulley with coating material The over-running clutch pulley (10) includes a sheave member (20), a hub member (22) a clutch member (24), and a coating (26), which cooperate to rotationally engage an input device (12) and an output device (14). The...	05/30/2006
7034481	Power transmission device for hybrid vehicle To provide a power transmission device that can increase the range of speed variation between an engine and a power output shaft and effectively achieve reduction in size and cost of the device arrangement. The speed reduction ratios from an engine 1 to first...	04/25/2006
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
6860251	Rotary piston engine A rotary engine includes separate chambers for receiving pressurized air and fuel. An air chamber stories pressurized air that is routed into a combustion chamber to be mixed with fuel for combustion to drive a piston. The combustion chamber is forced open during a ...	03/01/2005
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
6718938	Hinged rotor internal combustion engine A rotary internal combustion engine comprises a four-segment hinged rotor assembly accommodated in a coaxial housing such that the rotor assembles deforms and continuously adapts to the housing internal profile during its rotation. The closed non-circular rotor hous...	04/13/2004
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
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
6250279	Rotary internal combustion engine An internal combustion engine with an interior annular surface. A rotary piston mount rotates within an engine block interior space. Several spherical pistons are urged radially outwardly from the rotary piston mount by an urging means, and move in a radi...	06/26/2001
5819702	High efficiency vehicle and engine The efficiency of a vehicle having a body and a reciprocating piston four-stroke internal combustion engine is increased substantially by greatly reducing the size of the engine relative to the weight of the body. The great reduction in engine size relati...	10/13/1998
5388557	Combustion engine having a substantially constant temperature and pressure Combustion engine of high efficiency comprising a stator and a rotor, a duct shaped as a closed circle between said stator and rotor, at least one vane sliding in the duct and being fastend to the rotor, wherein the expansion takes place at a substantiall...	02/14/1995
5359971	Rotary steam/internal combustion engine and rotary hydraulic motor A self starting, quick start-up rotary steam/internal combustion engine and a rotary hydraulic motor, with a positive displacement, powered through 360° of each revolution and comprising: a flattened cylindrical flywheel with two diametrically opposed, r...	11/01/1994
5033429	Internal combustion engine An internal combustion engine having a pair of stationary housings of generally triangular configuration with sidewalls of each housing converging into one end of the opposite ends of a common output shaft, a compression chamber being disposed in each sid...	07/23/1991
4562802	Flexible cylinder engine An internal combustion engine comprising at least one flexible cylinder or semicylinder (chamber) formed from (a) at least one flexible, rectangular sheet attached to a rotor, which in turn is connected to a rotatable shaft, and (b) a pair of parallel end...	01/07/1986
4453508	Flexible cylinder engine A pumping or combustion engine having one to four cylindrical or semi-cylindrical chambers formed by at least one flexible sheet attached to a rotor, which sheet and/or rotor contact a plane, rigid plate at both sides thereof, containing inlet and exhaust...	06/12/1984
4089162	Accommodating device for thermal transient expansions An accommodating device for thermal transient expansions in an expander ene wherein a configured valve support includes a spring-nut arrangement for controlling and minimizing the force changes due to the temperature variations of the valve because of th...	05/16/1978

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Class 123/200 - ROTARY