| Patents for F04C 2 - Rotary-piston machines or pumps (14,296) |
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| 08/15/2012 | CN202381324U Vertical unit of marine oil delivery pump |
| 08/15/2012 | CN202381323U Cycloid pump for automatic transmission of car |
| 08/15/2012 | CN102635547A Gear pump |
| 08/15/2012 | CN102072150B Vane pump |
| 08/15/2012 | CN101389406B Fluid free interface for a fluidic analyzer |
| 08/14/2012 | US8241023 Pumping unit with reinforcing ribs |
| 08/09/2012 | WO2012103926A1 Gear pump |
| 08/09/2012 | WO2012103925A1 Double internal gear wheel pump |
| 08/09/2012 | WO2012103923A1 Internal gear pumps for a hydraulic vehicle braking system |
| 08/09/2012 | DE102011000732B3 Rotary piston pump for use in vacuum sewage system, has pump housing with inlet opening and outlet opening, and comminution element arranged on inlet opening side |
| 08/08/2012 | EP2483562A2 Axial sealing for an internal gear pump |
| 08/08/2012 | CN202370845U Working chamber of spacing ring of aviation low-pressure oil pump |
| 08/08/2012 | CN202370843U Small spring and airbag combined compensation single-chamber vane pump |
| 08/08/2012 | CN202370842U Leaf spring internal pressure combined compensation single-chamber vane pump |
| 08/08/2012 | CN202370841U Ring spoke spring compensating gear pump |
| 08/08/2012 | CN202370840U Internal pressure channel compensated gear pump |
| 08/08/2012 | CN202370839U Gear pump compensated by conical spring |
| 08/08/2012 | CN202370838U Sealing structure of external gear pump |
| 08/08/2012 | CN202370837U Gear oil pump |
| 08/08/2012 | CN202370836U Liquid supercharging equipment for gear pump |
| 08/08/2012 | CN202370835U Gear oil pump |
| 08/08/2012 | CN202370834U Pump body of gear pump |
| 08/08/2012 | CN202370833U Internal and external gear pump compensated by cylindrical spring |
| 08/08/2012 | CN202370832U Internal pressure channel compensated inner and outer gear pump |
| 08/08/2012 | CN202370831U Pagoda-shaped spring compensated internal-external gear pump |
| 08/08/2012 | CN202370830U Inner and outer gear pump with excircle spoke spring compensation function |
| 08/08/2012 | CN202370829U Ring-shaped air bag compensating internal and external gear pump |
| 08/08/2012 | CN202370828U Rotor type oil pump |
| 08/08/2012 | CN202370827U Disc spring compensating five-wire meshed rotor pump |
| 08/08/2012 | CN202370826U Cylindrical spring compensating three-line meshing rotor pump |
| 08/08/2012 | CN202370825U Cylindrical spring compensating four-wire meshed rotor pump |
| 08/08/2012 | CN202370824U Five-line-meshed rotor pump compensated by cylindrical spring |
| 08/08/2012 | CN202370823U Disc spring compensated three-line meshing rotor pump |
| 08/08/2012 | CN101636587B Rotary vane machine |
| 08/08/2012 | CN101328891B Dual rotors translation type rotary compressing device |
| 08/07/2012 | US8235690 Scroll compressor with improved oil separation from refrigerant gas |
| 08/07/2012 | CA2609670C Screw pump |
| 08/02/2012 | WO2012102288A1 Single-shaft eccentric screw pump |
| 08/02/2012 | WO2012101588A2 Pumping unit for feeding oil under pressure to a user |
| 08/02/2012 | WO2011076172A3 Hydraulic control |
| 08/01/2012 | EP2018495B1 Lubricating device with lubricating pinion |
| 08/01/2012 | CN202360383U Car steering pump |
| 08/01/2012 | CN202360382U Water pump |
| 08/01/2012 | CN202360381U Synchronous motor-oil pump integrated gear pump |
| 08/01/2012 | CN202360148U Star-rotating type rotating device using gate valve structure |
| 08/01/2012 | CN102625880A Rotary piston pump |
| 08/01/2012 | CN102619749A Impulse-wave gear pump |
| 08/01/2012 | CN102619748A Concave cam and convex cam rotary variable capacity pump |
| 08/01/2012 | CN102619747A High-pressure seawater hydraulic pump for double-cone opposite-cone threaded rod |
| 08/01/2012 | CN102619746A Internal gear pump |
| 08/01/2012 | CN102619745A Scroll fluid machine |
| 07/31/2012 | US8230836 Multi-cylinder reciprocating rotary engine |
| 07/26/2012 | WO2010119141A8 Control of the vanes of a vane machine |
| 07/26/2012 | US20120189481 Rotor type pump |
| 07/26/2012 | US20120189458 Rotor blade |
| 07/26/2012 | DE102010039262B4 Zahnradmaschine mit Druckumsteuerung Gear machine with Druckumsteuerung |
| 07/25/2012 | EP2479434A2 Regulation of an external gear pump |
| 07/25/2012 | EP2479382A1 Rotor blade |
| 07/25/2012 | EP2478225A2 Oscillating vane pump |
| 07/25/2012 | EP2478224A2 Gear pump comprising two rotating pump elements |
| 07/25/2012 | CN202348662U Dual-cavity vane pump compensated by leaf spring and cylindrical spring jointly |
| 07/25/2012 | CN202348661U High-pressure gear pump |
| 07/25/2012 | CN202348660U Magnetic-rotor water pump |
| 07/25/2012 | CN202348659U 齿轮泵 Gear pumps |
| 07/25/2012 | CN202348658U Gear pump using continuously cast copper alloy side plates |
| 07/25/2012 | CN202348657U Knuckle-tooth worm rod slurry pump |
| 07/25/2012 | CN202348656U Oil transfer pump matched with high-pressure common-rail oil injection pump for diesel engine |
| 07/25/2012 | CN202348655U Dished spring compensation four-wire meshing rotor pump |
| 07/25/2012 | CN202348654U Efficient pressure compensation type inner gear pump |
| 07/25/2012 | CN102612590A Peripheral pump-turbine |
| 07/25/2012 | CN102606476A Method for improving working stability of vane type hydraulic oil pump |
| 07/25/2012 | CN102606475A Synchronously rotary multi-phase pressurization oil-gas transport pump |
| 07/25/2012 | CN102606215A Rotator with eccentric straight shaft and extension-type wheel blades |
| 07/25/2012 | CN101608617B Internally-geared low-pulsation gear pump |
| 07/24/2012 | US8225968 Seal system for gear pumps |
| 07/24/2012 | US8225607 Vane-cell machine and method for waste heat utilization, using vane-cell machines |
| 07/19/2012 | WO2012096445A1 Scroll compressor with split type orbiting scroll |
| 07/19/2012 | WO2012096444A1 Scroll compressor with split type fixed scroll |
| 07/19/2012 | WO2012094771A1 Water closet comprising a bidet |
| 07/19/2012 | US20120183425 Valveless vane compressor |
| 07/19/2012 | US20120181042 No-Go Tag Systems and Methods for Progressive Cavity Pumps |
| 07/18/2012 | EP2476904A1 Electric pump unit |
| 07/18/2012 | EP2475891A2 Optimized discharge port for scroll compressor with tip seals |
| 07/18/2012 | EP2475890A2 Gear feed pump comprising a driving shaft, a driving toothed wheel, and a driven toothed wheel |
| 07/18/2012 | EP2475889A2 Rotary piston pump |
| 07/18/2012 | EP1409874B1 Reduced wear rotor and pump comprising same |
| 07/18/2012 | CN202338490U 滑杆旋转式压缩泵 Slider rotary compressor pump |
| 07/18/2012 | CN202338489U 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 |
| 07/18/2012 | CN202338488U 一种小弹簧环状气囊组合补偿双腔叶片泵 A small, spring-ring double-lumen balloon combined compensation vane pump |
| 07/18/2012 | CN202338487U 一种高压低噪声叶片泵 A high-pressure low noise vane pump |
| 07/18/2012 | CN202338486U 一种低压变量叶片泵 A low-pressure variable vane pump |
| 07/18/2012 | CN202338485U 一种pvb挤出机专用齿轮泵 One kind of special gear pump extruder pvb |
| 07/18/2012 | CN202338484U 齿轮泵泵体改良结构 Improved gear pump body structure |
| 07/18/2012 | CN202338483U 齿轮泵 Gear pumps |
| 07/18/2012 | CN102597522A Helical gear pump |
| 07/18/2012 | CN102588272A Screw pump |
| 07/18/2012 | CN102588271A Straight-line conjugated inside engaged gear pump provided with separating gear cylinder and machining method thereof |
| 07/18/2012 | CN101541461B Method for producing a machine housing with a surface-hardened fluid chamber |
| 07/17/2012 | US8221103 Fluid motor having improved braking effect |
| 07/17/2012 | US8221101 Scroll compressor with discharge guide |