| Patents for F04C 2 - Rotary-piston machines or pumps (14,296) |
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| 03/14/2012 | CN101907092B Conjugated sleeve pump |
| 03/13/2012 | US8133045 Self-aligning pump rotor and methods |
| 03/13/2012 | US8133043 Suction duct and scroll compressor incorporating same |
| 03/07/2012 | EP1937974B1 Remote hot melt adhesive metering station |
| 03/07/2012 | CN202157956U 一种齿轮泵驱动机构 A GEAR pump drive mechanism |
| 03/07/2012 | CN202157955U 多出口注色混合纺丝计量泵 Note color mixing spinning multi-outlet metering pumps |
| 03/07/2012 | CN101846068B Gear pump with improved structure for processing food |
| 03/06/2012 | US8128389 Positive-displacement machine design (variants) |
| 03/06/2012 | US8128386 Variable flow pumping system |
| 03/01/2012 | WO2012026085A1 Stator seal structure for single-shaft eccentric screw pump |
| 03/01/2012 | WO2011026453A3 Vane cell pump |
| 03/01/2012 | US20120051960 Rotary pump device |
| 03/01/2012 | US20120051959 Fluid machine and seal member used for the same |
| 03/01/2012 | DE202012000894U1 Zweispindelige Schraubenspindelpumpe in einflutiger Bauweise Two-Screw pump single flow design |
| 03/01/2012 | DE19531359B4 Ölpumpanlage Oil pumping station |
| 03/01/2012 | DE102011100601A1 Pumpenvorrichtung Pump device |
| 02/29/2012 | CN202152730U Planetary rotation type compressor or pump |
| 02/29/2012 | CN202152729U 一种齿轮泵式组合泵 One kind of gear pump combination pump |
| 02/29/2012 | CN202152691U Star rotating type rotating device |
| 02/29/2012 | CN102365460A 旋转泵 Rotary pump |
| 02/29/2012 | CN102364105A Steering pump with electromagnetic valve for controlling flow, and power steering pump flow control device and method for automobile |
| 02/29/2012 | CN102364104A Round-tooth worm type slurry pump |
| 02/28/2012 | US8123506 Rotary sliding vane compressor with a secondary compressed fluid inlet |
| 02/28/2012 | DE202012000893U1 Zweispindelige Schraubenspindelpumpe in einflutiger Bauweise Two-Screw pump single flow design |
| 02/28/2012 | DE202011052114U1 Innenzahnradpumpe Internal gear pump |
| 02/23/2012 | WO2012022595A2 Vane pump |
| 02/23/2012 | WO2012021992A1 Variable displacement oil pump |
| 02/23/2012 | WO2011045179A3 Screw spindle machine and method of manufacturing the same |
| 02/23/2012 | DE102010034980A1 Operating unit for rotary piston combustion engine for motor car, has cooling holes runningly arranged at periphery of cladding housing in axial direction and including approximately equal distance from trochoid path |
| 02/23/2012 | DE102010034979A1 Operating unit for circle piston combustion engine in motor car, has cooling water chambers, where bore holes continuously formed on circumference of mantel housing in axial direction and provided with trochoidal runway at equal distance |
| 02/22/2012 | EP2419639A2 Control of the vanes of a vane machine |
| 02/22/2012 | EP2419638A1 Variable capacity fluidic machine |
| 02/22/2012 | EP2419637A2 Aircraft main engine fuel pump with multiple gear stages using shared journals |
| 02/22/2012 | EP1516105B1 Internal gear machine with variable capacity |
| 02/22/2012 | CN202149025U 无轴承双螺杆泵 No bearing twin-screw pump |
| 02/22/2012 | CN202149024U Inner-engaged gear pump and gap filling component |
| 02/22/2012 | CN102362100A Drive device |
| 02/22/2012 | CN102362073A Hydraulic toothed wheel machine |
| 02/22/2012 | CN102359448A Matching structure of star wheel and eccentric shaft disc for food processing gear pump |
| 02/22/2012 | CN102359447A Gear pump using continuous casting copper alloy side plate |
| 02/22/2012 | CN101825084B 食品加工用齿轮泵 Food processing gear pump |
| 02/22/2012 | CN101454573B 叶片机 Blade machine |
| 02/21/2012 | US8118579 Gear pump |
| 02/21/2012 | US8118578 Rotary pump with sliding crescentoid rotor bodies |
| 02/21/2012 | US8118577 Scroll compressor having optimized cylinder oil circulation rate of lubricant |
| 02/21/2012 | US8118575 Variable displacement vane pump with enhanced discharge port |
| 02/21/2012 | CA2494444C Progressive cavity pump |
| 02/17/2012 | DE202010015439U1 Drehkolbenpumpe und Gehäuse-Halbschale für selbige Rotary pump and clam shell half for selbige |
| 02/17/2012 | DE202010015437U1 Drehkolbenpumpe mit Hohlkolben Rotary pump with hollow piston |
| 02/16/2012 | DE102010039344A1 Flügelzellenpumpe Vane pump |
| 02/16/2012 | DE102010039262A1 Pressure reversal integrated gear machine i.e. hydraulic external gear pump, has toothed arrangement with gear wheels, where teeth of wheels smear openings of connecting channels, and channels are opened and closed in time-controlled manner |
| 02/16/2012 | DE102010034032A1 Pump for conveying of setting material, particularly for conveying of prepared building material, has pump shaft with additional axial bearing in non-rotatable coupling with output shaft of drive motor |
| 02/16/2012 | DE102006061326B4 Stelleneinrichtung für eine mengenregelbare Zellenpumpe Ask device for a quantitative variable vane pump |
| 02/15/2012 | EP2417355A2 Combined oil delivery and vacuum pump |
| 02/15/2012 | CN202144791U 滑片泵的滑片防脱出结构 Slide-out preventing structural Vane Pump |
| 02/15/2012 | CN202144790U 微型三螺杆泵 Miniature three screw |
| 02/15/2012 | CN102356238A Rotor drive mechanism and pump device provided with same |
| 02/15/2012 | CN102352840A Screw rotor end face profile pair and construction method thereof |
| 02/15/2012 | CN102352838A Two-body outflow type power steering pump |
| 02/14/2012 | US8113805 Rotary fluid-displacement assembly |
| 02/14/2012 | US8113804 Vane pump with rotating cam ring and increased under vane pressure |
| 02/14/2012 | US8113803 Lubricating system for aircraft drive |
| 02/09/2012 | WO2012016552A2 External gear pump |
| 02/09/2012 | WO2011159833A4 Pumping systems |
| 02/09/2012 | WO2011140358A3 Fluid energy transfer device |
| 02/09/2012 | WO2011012364A3 Gear pump |
| 02/09/2012 | DE102011108767A1 Hocheffiziente Drehschieberkonstantpumpe High efficiency rotary vane pump constant |
| 02/09/2012 | DE102010038893A1 Fuel pump for supplying fuel in fuel injection system, has drive wheel that is propelled by drive shaft, where drive wheel is mounted on bearing pin by friction bearing |
| 02/08/2012 | EP2416014A1 Rotor drive mechanism and pump device provided with the same |
| 02/08/2012 | CN202140312U 减缓磨损的滑片泵滑片 Slowing worn vane pumps Vane |
| 02/08/2012 | CN202140310U 微型水泵 Miniature Pumps |
| 02/08/2012 | CN202140309U 叉车用齿轮油泵总成 Forklift gear pump assembly |
| 02/08/2012 | CN202140308U 转子式内压缩油气混输泵机组 Compression within the oil and gas multiphase pump rotor unit |
| 02/08/2012 | CN202140307U 单轴双室螺杆泵 Uniaxial double room screw |
| 02/08/2012 | CN202140306U 用于双离合器自动变速箱的油泵 For the double-clutch automatic gearbox oil pump |
| 02/08/2012 | CN102345600A Pressure pump with suction nut |
| 02/07/2012 | US8109748 Gear tooth and external gear pump |
| 02/07/2012 | US8109252 Rotary engine combustion chamber |
| 02/02/2012 | WO2011149209A3 Electrically driven scroll compressor |
| 02/01/2012 | EP2412979A2 Pressure pump with suction nut |
| 02/01/2012 | EP2411676A2 A rotary mechanism |
| 02/01/2012 | EP2411675A2 Rotary pump |
| 02/01/2012 | CN202132228U 滑片式油泵 Vane Pump |
| 02/01/2012 | CN202132227U 一种法斯特自卸车专用新型液压齿轮泵 One kind Belfast dedicated new hydraulic gear pump dump truck |
| 02/01/2012 | CN202132226U 一种重汽自卸车专用新型液压齿轮泵 One heavy steam dump truck dedicated new hydraulic gear pump |
| 02/01/2012 | CN202132225U 环体泵 Central body pump |
| 02/01/2012 | CN102341566A Vane pump |
| 02/01/2012 | CN102338086A Star-rotary-type compressor or pump |
| 02/01/2012 | CN102338085A Integral internal-discharge-type power steering pump |
| 02/01/2012 | CN102338084A Integral external-release type power steering pump |
| 02/01/2012 | CN102338083A Three-body internal-release type power steering pump |
| 02/01/2012 | CN102338082A Three-body external-release type power steering pump |
| 02/01/2012 | CN102338081A Tow-body internal-leaked steering booster pump |
| 02/01/2012 | CN102338080A Melt pump |
| 02/01/2012 | CN102337930A Star rotary rotation device |
| 02/01/2012 | CN101688532B 齿轮泵 Gear pumps |
| 02/01/2012 | CN101042134B 油泵 Pump |
| 01/31/2012 | US8105059 Compressor with screw rotor and gate rotor with inclined gate rotor center axis |
| 01/31/2012 | US8104375 Differential gear unit for motor vehicles comprising an active control mechanism for the driving force distribution |
| 01/26/2012 | WO2012012636A1 Well tool having a nanoparticle reinforced metallic coating |