Patents
Sitemap › F04 - Positive-displacement machines for liquids; Pumps for liquids or elastic fluids › F04C - Rotary-piston, or oscillating-piston, positive-displacement machines for liquids; Rotary-piston, or oscillating-piston, positive-displacement pumps › F04C 2 - Rotary-piston machines or pumps
Patents for F04C 2 - Rotary-piston machines or pumps (14,296)
06/2012
06/27/2012CN202284540U 一种齿轮泵 A GEAR pump
06/27/2012CN202284539U 一种双轴向间隙自动补偿的高压齿轮泵 A biaxial high-pressure gear pump automatic compensation gap
06/27/2012CN202284538U 单吸低压三螺杆泵 Low single suction three screw
06/27/2012CN202284537U 具有径向补偿功能的内啮合齿轮泵 Internal gear pump with radial compensation function
06/27/2012CN202284536U 一种四空间内压平衡密封转子泵 Pressure balance within the space of a four-rotor pump seal
06/27/2012CN202284535U 一种圆柱弹簧补偿三空间转子泵 One kind of cylindrical rotor pump spring to compensate three space
06/27/2012CN102518588A Internally-engaged gear pump
06/27/2012CN102518587A Compensating internal-external gear pump for internal pressure passage
06/27/2012CN101657638B Drawing device and method of drawing contained fluid
06/27/2012CN101603530B Scroll gas-liquid multiphase mixing transmission pump
06/26/2012US8206138 Scroll fluid machine with ball coupling rotation prevention mechanism
06/26/2012CA2630136C Rotor of progressive cavity apparatus and method of forming
06/21/2012WO2012079573A2 Vane pump and method for operating a rotary vane pump
06/21/2012WO2012079144A1 Rotary device
06/21/2012WO2011121045A3 Variable displacement lubricant pump
06/21/2012WO2011095148A3 Tandem pump comprising a switchable coupling between the two pumps
06/21/2012WO2011029657A3 Gear feed pump comprising a driving shaft, a driving toothed wheel, and a driven toothed wheel
06/21/2012US20120156081 Shaft Structure in a Pneumatic Actuator
06/21/2012US20120156080 Hydraulic Toothed Wheel Machine
06/21/2012DE102010063313A1 Axialscheibe für eine Zahnradpumpe und Zahnradpumpe mit einer solchen Axialscheibe Thrust washer for a gear pump and gear pump with such a thrust disk
06/21/2012DE10144693B4 Zahnradpumpe zur Schmierölversorgung Gear pump for supplying lubricating oil
06/20/2012EP1461533B1 Pump
06/20/2012CN202280617U 一种泵 A pump
06/20/2012CN202280616U 滑片泵 Vane pumps
06/20/2012CN202280615U 浸没式双螺杆货油泵 Submerged twin-screw cargo pumps
06/20/2012CN1928367B Pump rotor device
06/20/2012CN102510952A Rotor for pump and internal gear pump using same
06/20/2012CN102506023A Gear pump
06/20/2012CA2762358A1 Progressing cavity pump/motor
06/19/2012US8202071 Motor-driven scroll type compressor
06/14/2012WO2012077458A1 Oil supply device
06/14/2012US20120148434 Scroll Fluid Machine
06/14/2012US20120148426 Gear pump
06/14/2012DE102010054416A1 Spülanordnung für Tribokontaktflächen und Flügelzellpumpen mit einer solchen Anordnung Spülanordnung for Tribokontaktflächen and vane pumps with such an arrangement
06/14/2012DE102008063500B4 Hydraulische Maschine Hydraulic machine
06/14/2012CA2821074A1 Enhanced elastomeric stator insert via reinforcing agent distribution and orientation
06/13/2012EP2462318A1 Hydraulic motor or pump
06/13/2012EP1861319B1 Methods and apparatus for pumping and dispensing
06/13/2012CN202273851U 复合式自吸泵 Composite self-priming
06/13/2012CN202273850U 一种车辆用自动变速器油泵 A vehicular automatic transmission oil pump
06/13/2012CN102498297A Fuel pump with an overflow and a bypass valves
06/13/2012CN102498296A Gear pump comprising two rotating pump elements
06/13/2012CN101892980B Crank type crankshaft drive single screw pump
06/13/2012CN101523046B Compressor slide valve support
06/13/2012CN101443555B Rotary displacement pump with smaller radial dimensions
06/12/2012US8197241 Nanocomposite Moineau device
06/12/2012DE202012003347U1 Hydraulikmotor Hydraulic motor
06/07/2012WO2012071667A1 Production tubing and pump driver control lines combination for suspending progressive cavity pump and pump driver in a production assembly
06/07/2012US20120141315 External Gear Pump
06/07/2012CA2818048A1 Production tubing and pump driver control lines combination for suspending progressive cavity pump and pump driver in a production assembly
06/06/2012EP2459881A1 Vane pump and fuel injecting pump device comprising vane pump
06/06/2012EP2459880A2 Gear pump
06/06/2012EP2459879A2 Gear pump
06/06/2012DE102011087424A1 Aussenzahnradpumpe External gear pump
06/06/2012DE102010062298A1 Impellerpumpe Impeller
06/06/2012DE102005006810B4 Motorölpumpenanordnung und Verfahren zum Betreiben einer Motorölpumpenanordnung Engine oil pump assembly and method for operating an engine oil pump assembly
06/06/2012CN202266416U 超轻型直连齿轮泵 Direct Connect ultralight gear pump
06/06/2012CN202266415U 复合平衡型单吸双螺杆泵 Composite balanced single-suction double screw pump
06/06/2012CN202266414U 一种圆柱形定子转向泵 A cylindrical stator steering pump
06/06/2012CN101949385B Hydraulic power-assisted steering pump with double stators and double valve bodies for vehicles
06/05/2012US8192187 Compressor with screw rotor and gate rotor
06/05/2012US8192185 Expander-compressor unit
06/05/2012US8192183 Prismatic pump, especially slurry pump
06/05/2012CA2689805C Progressing cavity pump system for transporting high-solids, high-viscosity, dewatered materials
05/2012
05/31/2012WO2012069083A1 Variable displacement lubricant pump
05/31/2012US20120134868 Rotary sliding-vane compressor
05/31/2012DE112009004055T5 Zentripetale Pumpstufe und Vakuumpumpe, die eine solche Pumpstufe umfasst Centripetal pump stage and a vacuum pump comprising such a pump stage
05/31/2012DE102010062219A1 Innenzahnradpumpe Internal gear pump
05/31/2012DE102009037443B4 Selbstansaugende Flügelzellenpumpe Self-priming vane pump
05/31/2012DE102007023679B4 Verstellbare Flügelpumpe Variable displacement vane pump
05/30/2012EP2458215A2 Capacity control for a screw compressor
05/30/2012CN202252757U A large flow gear oil pump
05/30/2012CN202250833U High-viscosity fluid transmission pump end cover
05/30/2012CN202250832U External gear of high-stickiness fluid transfer pump
05/30/2012CN202250825U Hydraulic steering pump
05/30/2012CN202250824U Portable power-driven fuel pump
05/30/2012CN202250823U Rotary distributor type vane pump
05/30/2012CN202250822U Steering pump body for automobile
05/30/2012CN202250821U Steering great-force oil pump
05/30/2012CN202250820U Internal-releasing type two-way oil compensation gear oil pump
05/30/2012CN202250819U Gear pump with overload unloading function
05/30/2012CN202250818U Gear pump with dual side plates
05/30/2012CN202250817U Low-noise dual-gear pump
05/30/2012CN202250816U Internal-releasing type two-way oil compensation two-way oil return unloading gear oil pump
05/30/2012CN202250815U Screw pump
05/30/2012CN202250814U Adjustable-flow screw pump
05/30/2012CN202250813U Rotor structure of oil-recovery single screw pump
05/30/2012CN202250812U Five-dimensional space internal pressure balance canned-rotor pump
05/30/2012CN202250811U Spring compensating three-dimensional space rotor pump
05/30/2012CN202250810U Motor-driven fuel pump
05/30/2012CN102483059A 电动泵单元 Electric pump unit
05/30/2012CN102483058A 齿轮泵 Gear pumps
05/30/2012CN102483057A 齿轮泵 Gear pumps
05/30/2012CN102477979A 滑板式单双作用定变量泵或马达 Skateboard-style single and double action given variable pump or motor
05/30/2012CN101555878B Power steering pump having intake channels with enhanced flow characteristics and/or a pressure balancing fluid communication channel
05/29/2012US8186983 Gas compressor having a check valve
05/29/2012US8186982 Adjustable rotary pump with reduced wear
05/29/2012US8186981 Scroll compressor having a spring member pressing an eccentric shaft onto a slide face of a slide bush
05/29/2012US8186979 Capacity varying type rotary compressor and refrigeration system having the same
05/29/2012CA2759473A1 Downhole motor or pump components, methods of fabrication the same, and downhole motors incorporating the same
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