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)
05/2012
05/24/2012WO2012067175A1 Oil pump device
05/24/2012WO2012066026A2 Rotary piston pump and housing half-shell for same
05/24/2012WO2012065320A1 Twin-screw liquid pump
05/24/2012US20120128520 Oil Pump Rotor
05/24/2012DE102011055020A1 Pump module of pump such as cartridge pump, inserted into separate gear housing, has pressure plate having bearing recess which is sealed relative to pressure chamber by the pressure receiving element
05/24/2012DE102010051830A1 Regulating oil pump for lubricating internal combustion engine of motor cars, has devices shifting toothed wheel pump between low and high pressure stages, where wheel pump, reduction gear unit, clutch and free wheel are combined to unit
05/23/2012CN202228351U Inner gear of high-viscosity fluid transmission pump
05/23/2012CN202228350U Vane pump
05/23/2012CN202228349U Gear accelerating end-suction and end-discharge hand-operated rotary roller pump
05/23/2012CN202228348U Three-dimension internal pressure balanced sealing rotor pump
05/23/2012CN202228347U Pressure air bag compensation sealing three-space rotor pump
05/23/2012CN202228346U High-viscosity fluid transmission pump
05/23/2012CN202228345U Snake-shaped track high-pressure pump
05/23/2012CN102472284A 具有径向配置的电动机绕组的螺旋式压缩机 Having a radial configuration of the screw compressor motor windings
05/23/2012CN102472271A 电动泵单元 Electric pump unit
05/23/2012CN102465962A 树脂成形滑动轴承和其制造方法以及管式泵和其制造方法 And a resin molding method of manufacturing the sliding bearing and the tube pump and a manufacturing method thereof
05/23/2012CN102465876A 一种内转子泵 An internal rotor pump
05/23/2012CN102465875A 一种离心式容积泵 A centrifugal-type positive displacement pump
05/23/2012CN102465874A 一种容积式泵 A positive displacement pump
05/23/2012CN102465873A 自润滑齿轮泵 Self-lubricating gear pump
05/23/2012CN102465872A 一种外啮合齿轮泵 One kind of external gear pump
05/23/2012CN102465871A 一种螺杆转子端面齿型 A screw rotor end tooth
05/23/2012CN102465870A 一种带有轴向密封补偿的行星齿轮泵 An axial seal compensated with a planetary gear pump
05/23/2012CN101985931B Track positioning slip sheet type non-blockage pump
05/23/2012CN101985930B Rotor type deep submersible pump
05/23/2012CN101865129B Processing method of screw pump stator with equal wall thickness and special push-pull device
05/23/2012CN101718272B Double-action rotor pump
05/23/2012CN101429936B Down-hole double-screw type oil gas multi-phase mixed pump
05/22/2012US8182252 Progressing cavity pump with split stator
05/22/2012US8182251 Expander-compressor unit
05/22/2012US8182249 Sealed type scroll compressor
05/22/2012US8182248 Vane pump with tilting pad radial bearings
05/22/2012US8181624 Open-cycle internal combustion engine
05/16/2012EP2453137A2 Stator of an eccentric screw pump
05/16/2012EP2176552B1 Eccentric worm pump with split stator
05/16/2012DE102011001041A1 Magnetisch angetriebene Pumpenanordnung mit einer Mikropumpe mit Zwangsspuelung und Arbeitsverfahren Magnetically driven pump assembly with a micropump with Zwangsspuelung and working methods
05/16/2012DE102010051335A1 Stator einer Exzenterschneckenpumpe Stator of an eccentric screw pump
05/16/2012DE102010051192A1 Fördervorrichtung, Antrieb und Herstellverfahren für eine Fördervorrichtung Conveyor drive and manufacturing method for a conveyor
05/16/2012CN202220730U Gear pump for conveying high-viscosity fluid
05/16/2012CN102459903A A variable-displacement lubricant pump
05/16/2012CN102459902A 用于润滑螺杆泵系统的方法和设备 Methods and apparatus for lubricating the screw pump system
05/16/2012CN102459815A 具有改进的转子和叶片延伸环的叶片泵 Has improved vane pump rotor and vanes extending ring
05/16/2012CN102454794A Liquid seal, shaft seal apparatus and pump apparatus using the same
05/16/2012CN102454601A Design of trunk liquid injector hydraulic pump
05/16/2012CN102454600A Six-blade biaxial rotary positive-displacement pump
05/16/2012CN102454599A Inward rotation gear pump and front-pull-type dismounting method thereof
05/15/2012US8177536 Rotary compressor having gate axially movable with respect to rotor
05/15/2012US8177535 Method for timing a polymer pump containing polymer
05/15/2012US8177533 Scroll expander and refrigeration cycle apparatus
05/10/2012WO2012058702A2 Pump-out device for pumping mineral oil out of an oil tank
05/10/2012WO2011086013A3 Vane pump
05/10/2012WO2011077209A3 A geared hydraulic machine
05/09/2012EP2450529A1 Peripheral pump-turbine
05/09/2012EP2449215A1 Rotary device
05/09/2012CN202215472U Steering pump of automobile
05/09/2012CN202215471U High-pressure gear pump
05/09/2012CN102449314A Compressor having capacity modulation or fluid injection systems
05/09/2012CN102449313A Compressor having piston assembly
05/09/2012CN102449311A Screw spindle pump arrangement
05/09/2012CN102444719A Shaft sealing apparatus, pump apparatus and brake hydraulic pressure control device using same
05/09/2012CN102444579A Liquid ring compressors for subsea compression of wet gases
05/09/2012CN102444578A Variable displacement vane pump
05/09/2012CN102444577A Internal-gear type fluid device
05/09/2012CN101871449B Small rotor-type submersible pump
05/08/2012US8172561 Metal part and method of manufacturing metal part
05/08/2012US8172560 Fluid machinery having annular back pressure space communicating with oil passage
05/03/2012WO2012058455A1 Compressor seal assembly
05/03/2012WO2012055036A1 Submersible progressive cavity pump driver
05/03/2012WO2011064290A3 Vane pump
05/03/2012WO2011064281A3 Vane pump
05/03/2012US20120107162 Variable capacity fluidic machine
05/03/2012US20120102738 Method of Making Progressing Cavity Pumping Systems
05/03/2012CA2816365A1 Submersible progressive cavity pump driver
05/02/2012EP2447534A2 Electrically powered pump
05/02/2012EP2447533A1 Gear pump
05/02/2012EP1943423B1 Pump arrangement
05/02/2012CN202209275U Gear pump assembly of electric fuel pump
05/02/2012CN102434457A Structure of variable oil pump
05/02/2012CN102434456A Energy-saving gear oil pump
05/02/2012CN102434455A Cycloidal rotor pump
05/02/2012CN102434454A Outer-circle spoke spring compensation inner and outer gear pump
05/02/2012CN101220754B Generator
05/01/2012US8167597 Shaft bearings, compressor with same, and methods
05/01/2012US8167595 Inlet screen and scroll compressor incorporating same
05/01/2012CA2588817C Variable capacity vane pump with dual control chambers
05/01/2012CA2574915C A motor driven by pressure medium supplied from an external pressure source
04/2012
04/26/2012WO2012053588A1 Vane pump
04/26/2012WO2011029657A9 Gear feed pump comprising a driving shaft, a driving toothed wheel, and a driven toothed wheel
04/26/2012DE19854155B4 Hydraulische Zahnradmaschine Hydraulic gear machine
04/26/2012DE102010049439A1 External gear pump for lubrication of internal combustion engines of motor vehicles, has housing and two gear wheels which are rotatable within housing around parallel rotational axes
04/25/2012EP2443344A2 Fuel pump with an overflow and a bypass valves
04/25/2012CN202203109U 双轴密封变容式水泵 Biaxial sealed variable capacity pump
04/25/2012CN102425547A 一种小弹簧外圆辐条弹簧组合补偿双腔叶片泵 A small, cylindrical spokes spring spring combined compensation dual-chamber vane pump
04/25/2012CN102425546A 一种片弹簧圆柱弹簧组合补偿双腔叶片泵 One kind of leaf springs cylindrical spring combined compensation dual-chamber vane pump
04/25/2012CN102425545A 一种大小圆柱弹簧组合补偿双腔叶片泵 Combined compensation of a size cylindrical spring dual-chamber vane pump
04/25/2012CN102425544A 一种高压力齿轮泵 A high-pressure gear pump
04/25/2012CN102425543A 一种变速箱油泵结构 One kind of gearbox oil pump structure
04/25/2012CN101153590B 液力装置 Hydraulic equipment
04/24/2012US8162637 Rotary machine having frusto-conical elements
04/24/2012US8162636 Scroll compressor having partition wall in oil reservoir
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