| Patents for F04C 29 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups (16,981) |
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| 02/16/2012 | WO2011058848A9 Rotary vane compressor |
| 02/16/2012 | DE102010039343A1 Vakuumpumpe Vacuum pump |
| 02/15/2012 | EP2417357A1 Screw compressor specially suitable to be connected in parallel in compression units |
| 02/15/2012 | CN102356240A Screw compressor |
| 02/15/2012 | CN102356239A Rotary vacuum pump with a device for decoupling the driving motor |
| 02/15/2012 | CN102356237A Electric motor rotor and compressor provided with the same |
| 02/15/2012 | CN102352847A Oil-free helical-lobe compressor rotor |
| 02/15/2012 | CN102352846A Oil-free dry screw compressor rotor |
| 02/15/2012 | CN102352845A 20CrMnTi compressor blade through composite surface modification and preparation process thereof |
| 02/15/2012 | CN102352842A Novel water-cooling semi-sealed helical-lobe compressor |
| 02/15/2012 | CN101715516B 变速涡旋制冷压缩机 Variable speed scroll refrigeration compressors |
| 02/14/2012 | US8113804 Vane pump with rotating cam ring and increased under vane pressure |
| 02/09/2012 | WO2012017939A1 Air compression device for railway vehicle |
| 02/09/2012 | WO2012017760A1 Scroll-type fluid machine |
| 02/09/2012 | WO2012017727A1 Hermetically sealed compressor |
| 02/08/2012 | EP2416013A1 Electric motor rotor and compressor provided with the same |
| 02/08/2012 | EP2416011A1 Discharge muffler and two-stage compressor with discharge muffler |
| 02/08/2012 | EP2414682A2 Contoured check valve disc and scroll compressor incorporating same |
| 02/08/2012 | EP2414678A1 Air compressor |
| 02/08/2012 | CN202140316U 螺杆压缩机及其油分过滤网安装结构 Screw compressors and oil filter mounting structure |
| 02/08/2012 | CN202140315U 分段式变螺距转子结构 Segmented variable pitch rotor structure |
| 02/08/2012 | CN202140313U 干式螺杆真空泵双摆线转子 Dry Screw Vacuum Pump dual gerotor |
| 02/08/2012 | CN102348898A Powder metal scrolls and sinter-brazing methods for making the same |
| 02/08/2012 | CN102345606A GCr15 compressor blade subjected to surface modification and manufacture process thereof |
| 02/08/2012 | CN102345603A Vane compressor |
| 02/02/2012 | WO2011149209A3 Electrically driven scroll compressor |
| 02/02/2012 | US20120024632 Downhole seal and method of lubricating a downhole tool |
| 02/02/2012 | DE102009002447B4 Pumpenträger Bellhousing |
| 02/01/2012 | EP2411678A1 A compressor |
| 02/01/2012 | EP2411674A2 Shaft bearings, compressor with same, and methods |
| 02/01/2012 | CN202132245U 一种滑阀式真空泵的冷却装置 A valve vacuum pump cooling device slip |
| 02/01/2012 | CN202132244U 一种滑阀真空泵的油气分离机构 One kind of vacuum pump oil and gas separation mechanism |
| 02/01/2012 | CN202132243U 一种滑阀真空泵的挡流结构 A baffle structure slide valve vacuum pump |
| 02/01/2012 | CN202132242U 一种滑阀真空泵的回流装置 A slide valve vacuum pump reflux device |
| 02/01/2012 | CN202132241U 一种分体式的滑阀真空泵辅助油箱 Slide valve vacuum pump a separate-type auxiliary fuel tanks |
| 02/01/2012 | CN202132240U 一种滑阀真空泵的辅助油箱 One kind of slide valve vacuum pump auxiliary fuel tanks |
| 02/01/2012 | CN202132239U 旋转式压缩机 Rotary compressor |
| 02/01/2012 | CN202132238U Fixing structure for slip sheet spring of rotary type compressor |
| 02/01/2012 | CN102338514A Rotary type compressor and gas-liquid separator thereof |
| 02/01/2012 | CN102338094A Lower cover structure of closed type compressor |
| 02/01/2012 | CN102338093A Silencer structure of closed compressor |
| 02/01/2012 | CN102338092A Rolling dual-rotor-type refrigeration compressor with air cylinder cooling structure |
| 02/01/2012 | CN102338091A Enveloping tooth profile surface for meshing pair of single-screw compressor |
| 02/01/2012 | CN102338090A Screw rod type air compressor |
| 02/01/2012 | CN102338089A Compressor for increasing volumetric efficiency of cylinder |
| 02/01/2012 | CN102337931A Rotor, expansion machine and engine using rotor and expansion machine system |
| 02/01/2012 | CN101709700B 一种汽车用湿式旋片电动真空泵 An automobile with a wet electric rotary vane vacuum pump |
| 02/01/2012 | CN101691863B 一种降耗变排量回转压缩机 One kind of saving variable displacement rotary compressor |
| 02/01/2012 | CN101631957B 转子和设置有这种转子的压缩机部件 A compressor rotor and the rotor member such |
| 01/31/2012 | US8105054 Oil return tube aligned over motor protector in scroll compressor |
| 01/26/2012 | WO2012011206A1 Vane compressor |
| 01/26/2012 | WO2012010094A1 Two stage compressor and pump body baffle thereof |
| 01/26/2012 | WO2011139041A3 Compressor for a heat pump |
| 01/26/2012 | WO2010085935A3 Vacuum pump housing cover |
| 01/25/2012 | EP2410182A1 Screw compressor |
| 01/25/2012 | EP2409038A2 Rotary vacuum pump with a device for decoupling the driving motor |
| 01/25/2012 | CN202125429U Air inlet valve of screw compressor |
| 01/25/2012 | CN102333957A 旋转压缩机 Rotary compressor |
| 01/25/2012 | CN102330689A Rotary compressor and oil baffle plate thereof |
| 01/25/2012 | CN102330688A Claw-type rotor profile |
| 01/25/2012 | CN102330681A Vortex compressor |
| 01/25/2012 | CN102330680A Scroll compressor |
| 01/25/2012 | CN102330679A Demountable type scroll compressor |
| 01/25/2012 | CN101517239B Compressor with built-in oil separator |
| 01/18/2012 | EP2407669A2 Compressor with suction and discharge pipes |
| 01/18/2012 | EP2407668A2 Scroll compressor |
| 01/18/2012 | CN202117935U Rotary compressor utilizing refrigerant R32 |
| 01/18/2012 | CN202117934U Rotary type compressing machine |
| 01/18/2012 | CN202117933U Rotary compressor |
| 01/18/2012 | CN202117932U Rotary compressor |
| 01/18/2012 | CN202117931U Rotating type compressor and rotating machinery |
| 01/18/2012 | CN202117930U Bent pipe vibration-reducing structure of variable volume rotary compressor |
| 01/18/2012 | CN202117925U 旋转压缩机 Rotary compressor |
| 01/18/2012 | CN102322422A Vehicle mounted oil-free screw air-compressor oil pump and circulating method thereof |
| 01/18/2012 | CN102322421A Vehicle-mounted oil-free screw air compressor and oil circuit self-circulation cooling method thereof |
| 01/17/2012 | US8096796 Temporary self-lubricating coating for scroll compressor |
| 01/17/2012 | US8096794 Compressor with oil separation and storage |
| 01/17/2012 | US8096793 Ductile cast iron scroll compressor |
| 01/12/2012 | WO2012005150A1 Scroll compressor |
| 01/12/2012 | WO2011088527A3 Method for recovering energy when commpressing gas by a compressor |
| 01/11/2012 | CN202108733U Compressor comprising anti-rotation gasket |
| 01/11/2012 | CN202108731U Internal cooling vacuum pump |
| 01/11/2012 | CN202108729U Oil and gas separating structure for compressor of horizontal vortex air conditioner |
| 01/11/2012 | CN102317632A Muffler for a turbo or piston engine |
| 01/11/2012 | CN102317626A Apparatuses, systems, and methods for improved performance of a pressurized system |
| 01/11/2012 | CN102312838A Piston for rotary compressor and manufacturing method of piston |
| 01/11/2012 | CN102312837A Dry-type vacuum pump |
| 01/11/2012 | CN102312834A Scroll fluid machine |
| 01/11/2012 | CN101865135B Axial float positioning device for rotor shaft of vacuum pump |
| 01/11/2012 | CN101852210B Air suction pipe of refrigerator compressor |
| 01/11/2012 | CN101358596B Fluid machinery |
| 01/10/2012 | US8092201 Vane pump with coated vanes |
| 01/10/2012 | US8092200 Gas compressor with a pressure bypass valve being formed in a compressed gas passage or an oil separation space |
| 01/05/2012 | WO2012001989A1 Rotary compressor |
| 01/05/2012 | WO2012001966A1 Rotary compressor |
| 01/05/2012 | WO2012000066A2 Method for controlling a compressor element of a screw compressor |
| 01/05/2012 | DE102010026032A1 Flatter valve i.e. non-return valve, for use in rotary vane pump in brake booster in motor car, has blank holder whose form corresponds to bending line of single-sided clamped bending bar, which is designed as cantilever arm |
| 01/04/2012 | EP2402613A1 Dry type vacuum pump |
| 01/04/2012 | EP2304237B1 Pump |
| 01/04/2012 | EP2020483B1 Expander-compressor unit |