| Patents for F04C 2 - Rotary-piston machines or pumps (14,296) |
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| 10/13/2010 | CN201606245U 取力器齿轮泵联接器 PTO gear pump coupling |
| 10/13/2010 | CN201606244U 多腔定子螺杆泵 Multi-cavity of the stator screw |
| 10/13/2010 | CN201606243U 新型高压齿轮泵 The new high-pressure gear pump |
| 10/13/2010 | CN201606242U 双向齿轮泵 Bi-directional gear pump |
| 10/13/2010 | CN201606241U 供油泵 Supply pump |
| 10/13/2010 | CN201606240U 一种叉车供油泵 A forklift that supply pump |
| 10/13/2010 | CN201606239U 一种内啮合齿轮泵 An internal gear pump |
| 10/13/2010 | CN101858346A 齿轮泵 Gear pumps |
| 10/13/2010 | CN101328858B Low friction high-pressure blade rotating motor based on self-compensation compound seal technique |
| 10/12/2010 | US7811070 Pneumatic vane motor with by-pass means |
| 10/07/2010 | WO2010113410A1 Rotor drive mechanism and pump device provided with the same |
| 10/07/2010 | WO2010112114A2 Pump for a motor vehicle internal combustion engine, and motor vehicle internal combustion engine having a pump |
| 10/07/2010 | WO2010112108A2 Screw spindle pump arrangement |
| 10/07/2010 | WO2009150537A3 Pd pumps with a common gearbox module and varying capacities and easy access to mechanical seals |
| 10/07/2010 | DE19818027B4 Kavitationsfreie Zahnradpumpe Gear pump cavitation |
| 10/07/2010 | DE102010001601A1 Zahnradpumpe und Zahnradpumpe für Bremsvorrichtung Gear pump and gear pump for brake device |
| 10/07/2010 | DE102010001599A1 Zahnradpumpe Gear pump |
| 10/07/2010 | DE102009015685A1 Schraubenspindelpumpenanordnung Screw pump assembly |
| 10/06/2010 | EP2235375A1 Liquid pump |
| 10/06/2010 | EP2235374A2 Variable-volume internal gear pump |
| 10/06/2010 | CN201599189U 水基叶片泵 Water-based vane pump |
| 10/06/2010 | CN201599188U 高压低噪音螺旋圆弧齿轮泵 High pressure and low noise spiral arc gear pump |
| 10/06/2010 | CN201599187U 外啮合齿轮泵 External gear pump |
| 10/06/2010 | CN201599186U 电液动头专用小排量双向齿轮泵 Electro-hydraulic head special small-displacement gear pump bidirectional |
| 10/06/2010 | CN201599185U 一种微小型外啮合直齿圆柱齿轮泵 A micro mini external gear spur gear pumps |
| 10/06/2010 | CN201599184U 取力器齿轮泵 PTO gear pump |
| 10/06/2010 | CN201599183U 带减震气囊的齿轮泵 Gear pump with cushioning airbags |
| 10/06/2010 | CN101855452A Pump assembly for synchronous pressurization of two fluid circuits |
| 10/06/2010 | CN101852206A Parallel connection type double-screw-rod pump |
| 10/06/2010 | CN101852205A Driving method and device of offset oil well screw pump |
| 10/06/2010 | CN101852204A Eccentric circle rotor pneumatic or fluid motor or pump |
| 10/06/2010 | CN101852203A Annular barre; pump |
| 10/06/2010 | CN101852127A Continuous cycle engine |
| 10/06/2010 | CN101852125A Hybrid-power engine with square rotor |
| 10/06/2010 | CN101852124A Precession rotary engine |
| 10/06/2010 | CN101852094A Displacement sliding rotary engine |
| 10/06/2010 | CN101514699B Oil-gas separation circular arc type inside engaged gear combined oil pump |
| 10/06/2010 | CN101208518B Screw displacement pump |
| 10/05/2010 | US7806672 Rotary compressor with pressing mechanism and adjusting mechanism to vary a magnitude of a load in response to a pressure difference between the suction fluid and discharge fluid |
| 10/05/2010 | CA2486277C Down-hole vane motor |
| 09/30/2010 | WO2010109178A2 A rotary mechanism |
| 09/30/2010 | WO2010108959A2 Rotary pump |
| 09/30/2010 | WO2010108487A2 Stator for eccentric screw pumps |
| 09/30/2010 | WO2010072477A3 Toothed wheel arrangement |
| 09/30/2010 | US20100247363 Internal gear pump for a brake system |
| 09/30/2010 | US20100247362 Gear Pump |
| 09/30/2010 | DE102009004965B3 Fluidenergiemaschine, Pumpe, Turbine, Verdichter, Unterdruckpumpe, Kraftübertragung (Antriebe), Jetantrieb Fluid energy machine, pump, turbine, compressor, vacuum pump, power transmission (drives), jet propulsion |
| 09/29/2010 | EP2233691A1 Volume expansion rotary piston machine |
| 09/29/2010 | CN201593501U Epicycloid double-rotor displacement pump |
| 09/29/2010 | CN201593500U Gear type combination pump |
| 09/29/2010 | CN101846237A Lubricating pump and special pump shaft thereof |
| 09/29/2010 | CN101846236A Lubricating pump, pump body and pump cover thereof |
| 09/29/2010 | CN101846071A Viscous material conveying pump |
| 09/29/2010 | CN101846070A Internal gear pump |
| 09/29/2010 | CN101846069A Food-processing gear pump |
| 09/29/2010 | CN101846068A Gear pump with improved structure for processing food |
| 09/29/2010 | CN101435425B Novel tooth form of screw rod rotor of double-screw compressor |
| 09/28/2010 | US7802974 Screw compressor having asymmetric seal around rotor axis |
| 09/28/2010 | US7802973 Compact vane pump with mixed suction and return flows |
| 09/23/2010 | WO2010105682A1 Arrangement having a gear pump having a divided pump housing |
| 09/23/2010 | WO2010072476A3 Pump unit |
| 09/23/2010 | US20100239450 Pump insert |
| 09/23/2010 | US20100239449 Gear Pump Having Optimal Axial Play |
| 09/22/2010 | CN201588777U Light oil conveying high-pressure three-screw pump |
| 09/22/2010 | CN201588776U Hydraulic bore double-screw rod pump |
| 09/22/2010 | CN1959115B Vehicular brake device |
| 09/22/2010 | CN1867753B Method for delivering a multi-phase mixture and pump installation |
| 09/22/2010 | CN101842595A Moineau pump |
| 09/22/2010 | CN101842594A Friction drive pump for transfer cases, etc. |
| 09/22/2010 | CN101223362B Internal gear pump |
| 09/21/2010 | US7798794 Screw pump and screw rotor |
| 09/21/2010 | US7798792 Power transfer assembly with high efficiency pump |
| 09/21/2010 | US7798791 Capacity varying type rotary compressor and refrigeration system having the same |
| 09/21/2010 | US7798790 Vane pump using line pressure to directly regulate displacement |
| 09/21/2010 | CA2514823C Gear pump |
| 09/21/2010 | CA2436924C Stuffing box for progressing cavity pump drive |
| 09/16/2010 | WO2010103993A1 Uniaxial eccentric screw pump |
| 09/16/2010 | WO2010103701A1 Uniaxial eccentric screw pump |
| 09/16/2010 | WO2010045906A3 Pump, particularly vane-type pump |
| 09/16/2010 | DE102010010799A1 Pumpe Pump |
| 09/16/2010 | DE102009012916A1 Hydraulische Zahnradmaschine Hydraulic gear machine |
| 09/16/2010 | DE102009012856A1 Toothed wheel machine for use as e.g. toothed wheel pump, has shaft end surfaces formed in direction of action of axial force components and subjected with counter-pressure acting against axial force components by external connections |
| 09/16/2010 | DE102009012854A1 Hydraulische Zahnradmaschine Hydraulic gear machine |
| 09/16/2010 | DE102009012853A1 Hydraulische Zahnradmaschine Hydraulic gear machine |
| 09/15/2010 | CN201582113U External closed oil pump |
| 09/15/2010 | CN201582109U Flow adjustable screw pump |
| 09/15/2010 | CN201582108U Crescent gear pump |
| 09/15/2010 | CN201582107U Rotor lubricant pump directly transmitted by flat square of engine crankshaft |
| 09/15/2010 | CN201582106U Rotor-type lubricant pump capable of preventing shoulder from leaking |
| 09/15/2010 | CN201582105U Gear type oil pump with annular oil guide slot |
| 09/15/2010 | CN101835986A Internal gear pump for a braking system |
| 09/15/2010 | CN101832264A Oil pump rotor |
| 09/15/2010 | CN101832263A Straight-tooth conjugate crescent seal gear pump |
| 09/15/2010 | CN101639064B Conversion device of mechanical motion and fluid motion |
| 09/15/2010 | CN101233297B Improved vane pump |
| 09/14/2010 | US7794217 Variable capacity vane pump with dual control chambers |
| 09/14/2010 | US7793636 Apparatus adapted to perform as compressor, motor, pump, and internal combustion engine |
| 09/14/2010 | US7793635 Rotary piston type internal combustion engine |
| 09/10/2010 | WO2010100134A2 Eccentric screw pump |
| 09/10/2010 | WO2010057838A3 Fuel pump for internal combustion engines |