Class 418/161 - Rotating

Subclass of Class 418 - Rotary expansible chamber devices
Definition: Apparatus in which the outer cylinder member revolves about
No. of patents: 19
Last issue date: 02/07/2006

Number	Title	Issue Date
6994071	Two-cycle engine for counter-rotation especially for aviation applications A counter-rotating 2 cycle piston engine with a combustion chamber and an output shaft rotatably mounted to rotate independently about the same propeller centerline of an aircraft. The Internal combustion power is transmitted to the output shaft by means of a conven...	02/07/2006
6967326	Mass spectrometers on wafer-substrates An apparatus includes a semiconductor or dielectric wafer-substrate and first and second multi-layer structures located over the wafer-substrate. The first multi-layer structure includes an ionizer or an electronic ion detector. The second multi-layer structure incl...	11/22/2005
6928977	Adapter, to interface counter-rotating torque producing engine mechanisms with stationary support accessories, for torque free output and torque sensitive environments The present invention is a novel hydraulic/electric, rotating interface for torque producing engines, including internal combustion engines, which enables a rigidly mounted motor to isolate the power/torque producing components from other stationary accessories, to ...	08/16/2005
6889871	Internally generated rotor set for low viscosity and abrasive metering applications An internal gear set comprising an inner rotor having a number of radially projecting cylindrical tooth members engaging a conjugate internally toothed outer rotor. The latter has one more tooth than there are tooth members on the inner rotor and is mounted eccentri...	05/10/2005
6761144	Rotary engine with counter-rotating housing and output shaft mounted on stationary spindle A counter-rotating rotary-piston engine has an output shaft with a cylindrical inner cavity rotatably mounted on a single support spindle in the frame of an aircraft. The output shaft extends substantially through the length of the engine block, which is suitably jo...	07/13/2004
5961308	Cylindrical pump device having a flexible blade member A cylindrical pump device comprises a cylindrical housing and a cylindrical rotational member disposed in the cylindrical housing for rotation around the axis of the cylindrical housing. The cylindrical rotational member has a solid cylindrical wall, a ce...	10/05/1999
5713726	Pump apparatus A pump apparatus includes a pump having a suction port and a discharge port for discharging the fluid sucked from the suction port, a return passage connecting the discharge port with the suction port for returning a portion of the fluid discharged from t...	02/03/1998
5379736	Gas compressor/expander The invention is an air compressor and a gas expander. The compressor/expander has an inner chamberwall-forming member attached eccentrically to a drive shaft and being rotatable with it, an outer chamberwall-forming member attached eccentrically to the d...	01/10/1995
5259739	Non-reciprocating multi-piston engine A mechanism for providing motive power consisting of a plurality of rotary-type pistons fitted into chambers uniformly situated about the axis of the engine in a housing for improving the effective displacement and compression of such engines. Motive forc...	11/09/1993
5127810	Rotary pump or engine with spherical body There is disclosed a rotary pump or engine or compressor or expander comprising a spherical cavity divided by a pivotable disc into two sections. First and second wedges are pivotally connected at opposed disc surfaces. One wedge may be driven causing the...	07/07/1992
5040957	Co-rotor engine with valve system A co-rotor engine with an internal valving system controlling the supply to and exhaust from motor chambers of gas under pressure. The valving system has concentric sleeves that are relatively displaced in performing the valving function....	08/20/1991
4923376	Moineau pump with rotating closed end outer member and nonrotating hollow inner member An arrangement for an improved Moineau pump, i.e., a progressing cavity pump with a helical gear pair, wherein the closed end outer gear rotates and orbits relative to a nonrotating hollow inner gear. A hollow inner gear comprising an internal chamber ext...	05/08/1990
4631011	Fluid handling device useful as a pump, compressor or rotary engine A fluid handling device which when suitably configured can be used as a pump, compressor or as a rotary engine. In the illustrated application, there are three primary active components. These are two identical rotating segments or pistons and a centrally...	12/23/1986
4592706	Internal gear pump with branched intake plenum This internal gear pump has: a pump housing formed with a rotor receiving cavity which has a cylindrical circumferential inner wall surface; an outer rotor formed with a generally cylindrical outer surface which fits closely and coaxially in the cylindric...	06/03/1986
4215533	Rotary expander engine A low noise, high power, light weight, compact rotary expander engine of Wankel type which features minimum unbalanced forces and elimination of balance weights because its rotating parts rotate about their centers of mass. The high inertia of its rotat...	08/05/1980
4215534	Cooling system for an expander engine A cooling system for a low noise, high power, light weight, compact rotary xpander engine of the Wankel type having two hot zones at the operating temperatures wherein a coolant path is provided which permits the coolest coolant to be delivered at the two ...	08/05/1980
4032267	Gerotor motor with a stationary inner member and a rotating and orbiting outer member A hydraulic motor includes an elongated output member which is supported for rotational movement about a central axis thereof. The output member is driven by a gerotor gearset which includes an outer member having internal teeth which mesh with external t...	06/28/1977
3981645	Displaced piston machine A displaced piston engine which has at least one piston received between two guide members in a cylinder, the guide members having opposed guide surfaces contacting surfaces of the piston, the contacting surfaces of the piston and guide members being arcu...	09/21/1976
3932072	Moineau pump with rotating outer member A pump composed of a gear pair made up of an inner member having at least one external helical thread, and an outer member having internal helical threads, there being one more internal helical thread in the outer member than the number of threads on the ...	01/13/1976

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Class 418/161 - Rotating