Patents for F04C 2 - Rotary-piston machines or pumps (14,296)
09/2013
09/26/2013DE102013204971A1 Verstellpumpe Variable
09/26/2013DE102012204500A1 Pendelschieberpumpe Reciprocating vacuum pump
09/26/2013DE102012204424A1 Flügelzellenpumpe mit einem Gehäuse, einem verschiebbaren Stator, und einem innerhalb von dem Stator drehbaren Rotor Vane pump comprising a housing, a displaceable stator, and a rotatable rotor within the stator
09/26/2013DE102012018965A1 Flügelpumpe Vane pump
09/26/2013DE102012006016A1 Rotary vane pump has rotary vane rotor transport chambers that form rotor disc space for transportation of medium from pump chamber
09/26/2013DE102012005958A1 External hydraulic gear machine has bearing bushes whose inner walls are elastically deformable in region of low pressure terminal on axially adjacent regions of gears
09/26/2013DE102012005591A1 Hydraulic power working machine has pressure channel whose oval cross-section is formed in region of pressure connection portion
09/26/2013DE102011012586B4 Gerotorpumpe mit Außenringantrieb Gerotor pump with outer ring drive
09/25/2013EP2642126A1 Oil pump device
09/25/2013EP2642125A1 Twin-screw liquid pump
09/25/2013EP2642124A1 Fuel pump for an internal combustion engine
09/25/2013EP2642073A2 Pendulum vane pump
09/25/2013EP2642070A1 Rotary piston engine
09/25/2013EP2640977A2 Magnetically driven pump arrangement having a micropump with forced flushing, and operating method
09/25/2013EP2640976A2 Rotary piston pump and housing half-shell for same
09/25/2013CN203214318U Chocolate mash feeding pump
09/25/2013CN203214317U Cycloid rotor pump
09/25/2013CN203214316U 柱塞泵 Piston
09/25/2013CN103321905A Blade of direct-current electric gasoline pump
09/25/2013CN103321903A Rotatory variable displacement pump
09/25/2013CN103321902A Double-rotor sealed cavity volume circulated increasing and decreasing device
09/25/2013CN103321901A 叶片泵 Vane pump
09/25/2013CN103321900A 轻型转向泵 Light steering pump
09/25/2013CN103321899A Two-body escape power steering pump
09/25/2013CN103321898A Pressure resistant steering pump
09/25/2013CN103321897A Variable displacement pump
09/25/2013CN103321896A 叶片泵 Vane pump
09/25/2013CN103321895A Vane pump
09/25/2013CN103321894A Pendulum-slide pump
09/24/2013US8540500 High capacity lightweight compact vane motor or pump system
09/24/2013US8539930 Rotary combustion apparatus
09/24/2013US8539769 Internal combustion engine and supercharger
09/20/2013CA2810014A1 Generator compressor combination power system
09/19/2013WO2012149929A3 Variable displacement pump
09/19/2013US20130243636 Fuel pump for an internal combustion engine
09/19/2013US20130243634 Self-Cleaning Screw-Type Centrifugal Wheel Pump with Recirculation Behind the Impeller
09/19/2013DE102012203999A1 Pendulum feeder pump for use as oil pump for motor vehicles, has rotor set consisting of rotationally mounted inner rotor standing in connection with outer rotor by pendulum, where outer bracket is formed between pendulum heads
09/18/2013CN203201791U Novel three-blade type rotor for rotor pump
09/18/2013CN203201788U Right-handed rotary oil pump converted by left-handed rotary shaft head oil pump of compressor
09/18/2013CN203201787U Leak type high pressure vane pump
09/18/2013CN203201786U Pulseless rotor pump (Q type)
09/18/2013CN203201785U Pulseless rotor pump (QD type)
09/18/2013CN203201784U Internal rotating pump applied to spraying equipment
09/18/2013CN103306972A Combined type cam pump rotor, cam pump and oil discharge stripping device
09/18/2013CN103306971A Internal gear pump
09/18/2013CN101855452B Pump assembly for synchronous pressurization of two fluid circuits
09/17/2013US8535028 Downhole positive displacement motor
09/12/2013WO2013133641A1 Two-stage compressor unit and compressor system having same
09/12/2013WO2013133202A1 Variable displacement gear pump
09/12/2013WO2013084039A3 Oil pump for vehicle and vehicle with the same
09/12/2013WO2012120094A3 A gerotor pump, a gerotor motor and a gerotor transmission system
09/12/2013WO2012094460A4 Pressure compensation system for an oil-sealed mud motor bearing assembly
09/12/2013US20130236346 Two step compressor unit and compressor system having the same
09/12/2013DE10236454B4 Rotatorische Pumpe mit höherem Abgabedruck und Bremsvorrichtung, die dieselbe aufweist Has rotational pump having a higher delivery pressure and braking device, the same
09/12/2013DE102012005949B4 Zweispindelige Schraubenspindelpumpe in zweiflutiger Bauweise Two-Screw pump in twin-scroll design
09/12/2013DE102012001700B4 Zweispindelige Schraubenspindelpumpe in einflutiger Bauweise Two-Screw pump single flow design
09/12/2013DE102012001699B4 Zweispindelige Schraubenspindelpumpe in einflutiger Bauweise Two-Screw pump single flow design
09/11/2013CN203189264U Gas-liquid high-pressure pump
09/11/2013CN203189263U Water supply gear pump for refrigerator
09/11/2013CN203189262U Gear pump for excavator
09/11/2013CN103299078A Rotary piston pump and housing half-shell for same
09/11/2013CN103291612A Harmonic gear pump
09/11/2013CN103291611A Novel gear pump with deformable internal gear
09/11/2013CN103291610A Quadruple-action harmonic gear pump
09/11/2013CN103291609A Biaxial harmonic gear pump
09/11/2013CN103291608A Double-acting gear-within-gear pump
09/11/2013CN103291607A Incomplete gear mechanism-driven blade differential pump
09/11/2013CN103291365A Fluid machine and engine with rotating wheel vortex mechanism
09/11/2013CN102242706B 微型水泵 Miniature Pumps
09/11/2013CN102094811B Non-linear shovel surface secondary enveloping molded line single screw rod meshing pair
09/11/2013CN101960145B High temperature progressive cavity motor or pump component and method of fabrication
09/10/2013US8529234 Water injection type screw fluid machine
09/10/2013US8529233 Displacement machine with improved support
09/10/2013US8529232 Compressor having capacity modulation system
09/09/2013DE202013103826U1 Innenzahnradmaschine mit Füllstück-Rückhalteeinrichtung Internal gear machine with filler restraint system
09/06/2013WO2013131011A1 Sealing element for rotary compressor
09/04/2013EP2634430A1 Gear pump assembly
09/04/2013EP2634366A2 Dual spindle helical spindle pump with a single-entry design
09/04/2013EP2633196A1 Compressor seal assembly
09/04/2013EP2633194A2 Vane pump
09/04/2013EP2633160A2 Rotary three dimensional variable volume machine.
09/04/2013CN203175851U Dual-rotor blade type pump or motor with single blade for transmitting torsion moment
09/04/2013CN203175850U Torsional spring vane pump for lifting oil well
09/04/2013CN203175849U Dual-rotor blade type pump or motor
09/04/2013CN203175848U Dual-rotor hinged blade type pump or motor
09/04/2013CN203175847U Dual-rotor elastic blade type pump or motor
09/04/2013CN203175846U 微型水泵 Miniature Pumps
09/04/2013CN203175845U Motor/internal gear pump integrated connection structure
09/04/2013CN203175844U Oil pump rotor
09/04/2013CN103282665A Conveying apparatus, drive and manufacturing method for a conveying apparatus
09/04/2013CN103282664A Uniaxial eccentric screw pump
09/04/2013CN103277305A Eccentric multiphase oil-gas transportation pump
09/04/2013CN103277304A Rotating compression device
09/04/2013CN101915238B Overload-protection thick liquid pump
09/03/2013US8523546 Cycloid rotor engine
09/03/2013US8523544 Three stage scroll vacuum pump
08/2013
08/29/2013WO2013124626A1 Stator for progressive cavity pump/motor
08/29/2013WO2012116962A3 Vane pump
08/29/2013WO2012058527A3 Fluid device with pressurized roll pockets
08/29/2013US20130225910 Rotary Pump with Hydrodynamically Suspended Impeller
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