F04C 2 - Rotary-piston machines or pumps

Patents for F04C 2 - Rotary-piston machines or pumps (14,296)
12/2013
12/11/2013	CN203335390U Oil pump with high strength performance
12/11/2013	CN103443459A Method for producing the tooth shape of the inner and outer ring of an annular gear machine and toothed ring produced by means of said method
12/11/2013	CN103443401A Pumping unit for feeding oil under pressure to user
12/11/2013	CN103437996A External meshing gear pump provided with involute unloading groove
12/10/2013	US8602760 Vane compressor
12/10/2013	US8602758 Indexed positive displacement rotary motion device
12/10/2013	US8602756 Scroll type compressor having an elastic member to suppress noise and reduce variations
12/10/2013	US8602748 Pumping system
12/10/2013	CA2740567C Downhole pump apparatus having decoupleable isolation plug
12/05/2013	WO2013180033A1 Internal gear pump
12/05/2013	WO2013178939A1 Progressive cavity pump
12/05/2013	US20130323106 Rotor for oil pump
12/05/2013	US20130323104 Scavenge gear pump
12/05/2013	DE19918393B4 Hydraulische Fördereinrichtung Hydraulic conveyor
12/05/2013	DE102012209154A1 Gear wheel machine e.g. pump, has housing separated into two housing portions with respective mating surfaces, where fixed material exhibiting anti-vibration effect is completely filled in space between mating surfaces
12/05/2013	DE102012209152A1 Gear machine e.g. pump is formed with recess with two portions extended in different directions, such that pressurized fluid pass into recess in direct contact with bearing sleeve and tooth space of associated gearwheel
12/05/2013	DE102012104804A1 Displacement pump e.g. two-stroke vane pump, for conveying pressurized medium to gear box of motor vehicle, has side walls closed at groove bottom, where spacing of side walls from each other are enlarged over diameters of position pins
12/05/2013	DE102012104736A1 Rotary pump for viscous fluid medium, has heat exchanger that is associated with temperature control of pump chamber by heat carrier, and is integrated in wall of pump casing
12/04/2013	EP2669522A1 Single-shaft eccentric screw pump
12/04/2013	EP2669521A1 Rotor for oil pump
12/04/2013	EP2668371A2 Pumping assembly for feeding oil under pressure to a user
12/04/2013	CN203321819U Combined single-screw pump of spiral propeller
12/04/2013	CN203321818U Structural improvement of three-screw pump
12/04/2013	CN203321817U Multistage parallel connection internal gear pump
12/04/2013	CN103429896A 内齿轮泵 Internal gear pump
12/04/2013	CN103423155A Pump assembly for a vehicle
12/04/2013	CN103423153A Filling vane pump used on emulsion explosive filling machine
12/04/2013	CN103423152A Automotive hydraulic vane pump motor and switching control hydraulic system thereof
12/04/2013	CN103423151A Inverse current convergence liquid pump with double spiral pipes
12/04/2013	CN103423150A Rotor fluid mechanical transfiguration mechanism
12/04/2013	CN103422981A Star rotary type fluid machine and engine and fluid motor applied to same
12/03/2013	US8597004 Scroll type compressor having an intercommunication path in which a pin member is inserted
12/03/2013	US8597003 Direct control variable displacement vane pump
12/03/2013	US8597002 Hydraulic machine with vane retaining mechanism
12/03/2013	CA2711112C High temperature progressive cavity motor or pump component and method of fabrication
11/2013
11/30/2013	CA2813856A1 Improved scavenge gear pump
11/28/2013	US20130315770 Pump assembly for a vehicle
11/28/2013	US20130315766 Screw compressor unit
11/28/2013	US20130315765 Three stage scroll vacuum pump
11/28/2013	DE112009004055B4 Zentripetale Pumpstufe und Vakuumpumpe, die eine solche Pumpstufe umfasst Centripetal pump stage and a vacuum pump comprising such a pump stage
11/28/2013	DE112005003637B4 Zahnradpumpe Gear pump
11/28/2013	DE102013209087A1 Pumpenbaugruppe für ein fahrzeug Pump assembly for a vehicle
11/28/2013	DE102012208851A1 Internal gear pump for hydraulic, slip controlled and/or independently powered vehicle brake system, has separating unit comprising set of laterally projecting brackets of undercut in side wall of pumping space
11/27/2013	CN203308707U Rotary variable volume pump
11/27/2013	CN203308706U Inner sealing structure for front and rear cover and pump body in gear pump
11/27/2013	CN203308705U Permanent magnet servo inner engaged gear type electro-hydraulic pump
11/27/2013	CN203308704U Inside engaged gear type oil delivery pump
11/27/2013	CN203308703U Synchronous three-parallel inside engaged gear pump
11/27/2013	CN103415702A Plastic pump housing and manufacture thereof
11/27/2013	CN103410726A Ovoid gear pump with double parallel structure
11/26/2013	US8591210 Scroll compressor having adjustable spacers
11/26/2013	US8591203 Pump apparatus
11/21/2013	WO2013172410A1 Multistage oil pump
11/21/2013	WO2013172409A1 Multistage oil pump
11/21/2013	WO2013171725A1 Multiple stage passive variable displacement vane pump
11/21/2013	WO2013171630A1 Polyetherimide pump
11/21/2013	WO2013083740A3 Rotary lobe pump with fixed supports and rotating sleeves
11/21/2013	US20130309120 Double internal gear wheel pump
11/21/2013	US20130309114 Sliding vane positive displacement pump
11/21/2013	US20130309113 Multiple Stage Passive Variable Displacement Vane Pump
11/21/2013	DE102012103888A1 Displacement pump for conveying of pressurizing agent to consumer, particularly vane-type or roller pump for transmission of motor vehicle, has pump packet with rotor, cam ring and multiple working slides
11/21/2013	DE102004005468B4 Rotationskolbenmaschine Rotary piston engine
11/20/2013	EP2663775A1 Water closet comprising a bidet
11/20/2013	CN203297096U One-side oil-free vortex fluid mechanical device
11/20/2013	CN203297095U Oil-well pump
11/20/2013	CN203297094U Differential velocity vane pump driven by incomplete gear mechanisms
11/20/2013	CN203297093U Soft rotor pump
11/20/2013	CN103398008A Oil-gas mixture transport pump
11/19/2013	US8585384 Rotary pump including inner rotor and outer rotor having different axial size of an axial clearance
11/19/2013	US8585381 Scroll type compressor having an intercommunication path in which a pin member is inserted
11/14/2013	WO2013167843A2 Rotary-piston engine1
11/14/2013	WO2013167371A2 Pump unit
11/14/2013	WO2013167120A2 Divided stator casing
11/14/2013	WO2013022770A3 Fluid energy transfer device
11/14/2013	WO2012175349A3 Vane pump
11/14/2013	WO2012175348A3 Vane pump
11/14/2013	US20130302196 Multi-channel, rotary, progressing cavity pump
11/14/2013	DE19918390B4 Pumpenvorrichtung und Verfahren zum Zusammenbauen der Pumpenvorrichtung Pump apparatus and method of assembling the pump device
11/13/2013	EP2661562A2 Semi-plugged star gerotor and method of assembling the same
11/13/2013	EP2661289A2 Percutaneous heart pump
11/13/2013	CN203285679U Improved vane pump
11/13/2013	CN203285678U Transmission structure of gear pump
11/13/2013	CN203285677U Hydraulic gear pump
11/13/2013	CN203285676U Electric petrol pump
11/13/2013	CN103388580A Split type mechanical seal and double-screw pump with same
11/13/2013	CN101542114B Rotary fluid pressure device with modular multi-speed control mechanism
11/12/2013	US8579618 Internal gear pump with optimized noise behaviour
11/12/2013	US8579617 Oil pump rotor
11/12/2013	US8579614 Scroll compressor with three discharge valves, and discharge pressure tap to back pressure chamber
11/12/2013	US8579613 Vane pump and vapor leakage check system having the same
11/12/2013	CA2571167C Axial flow positive displacement gas generator with combustion extending into an expansion section
11/10/2013	CA2776703A1 Integrated driving head for progressive cavity pumps used in oil extraction
11/07/2013	WO2013124269A3 Rotary piston
11/07/2013	DE102012207259A1 Innenzahnradpumpe Internal gear pump
11/07/2013	DE102012207254A1 Internal gear pump i.e. hydraulic pump, for e.g. servo-vehicle brake system, has separating element comprising outer part that rests against heads of teeth of ring gears, where interior and outer part are metal sheet bending parts
11/07/2013	DE102012112044A1 Selbstfixierendes Statorgehäuse The self-fixating stator
11/07/2013	DE10161131B4 Flügelpumpe veränderlicher Verdrängung Variable displacement vane pump
11/06/2013	EP2660471A1 Uniaxial eccentric screw pump
11/06/2013	CN203272127U Wear-resisting device of rotor pump
11/06/2013	CN103382935A Novel high pressure seawater hydraulic pump provided with two oppositely arranged tapered threaded rods

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