| Patents for F04C 11 - Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations (1,800) |
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| 07/31/2012 | US8231368 Multi-stage rotary compressor |
| 07/26/2012 | US20120189478 Vacuum pump system |
| 07/26/2012 | DE102012001781A1 Hydraulic gear box device for e.g. construction vehicle, has pumping gear wheels of gear pumps, that are located on the axial displaceable shaft |
| 07/18/2012 | EP2476904A1 Electric pump unit |
| 07/12/2012 | US20120174620 Hermetic compressor and refrigeration cycle equipment using the same |
| 07/11/2012 | CN202326224U 一种组合式齿轮油泵 A modular gear pumps |
| 07/11/2012 | CN102575669A Double internal gear pump |
| 07/11/2012 | CN102562583A Triple gear pump |
| 07/04/2012 | CN101858346B 齿轮泵 Gear pumps |
| 06/21/2012 | WO2011095148A3 Tandem pump comprising a switchable coupling between the two pumps |
| 06/21/2012 | DE102010063532A1 Pumpe, Verdichter oder Motor mit kleinem Durchmesser-Längenverhältnis Pump, compressor or motor small-diameter-length ratio |
| 06/21/2012 | DE102010063506A1 Pumpe, Verdichter oder Motor mehrstufig oder mehrflutig Pump, compressor or motor or multistage multiflow |
| 06/21/2012 | DE10144693B4 Zahnradpumpe zur Schmierölversorgung Gear pump for supplying lubricating oil |
| 06/20/2012 | EP1461533B1 Pump |
| 06/20/2012 | CN102506023A Gear pump |
| 06/06/2012 | EP2459880A2 Gear pump |
| 06/06/2012 | EP2459879A2 Gear pump |
| 06/06/2012 | DE102005006810B4 Motorölpumpenanordnung und Verfahren zum Betreiben einer Motorölpumpenanordnung Engine oil pump assembly and method for operating an engine oil pump assembly |
| 05/31/2012 | DE10112500B4 Elektrohydraulische Antriebseinheit Electro-hydraulic drive unit |
| 05/30/2012 | CN202250817U Low-noise dual-gear pump |
| 05/30/2012 | CN102483058A 齿轮泵 Gear pumps |
| 05/30/2012 | CN102483057A 齿轮泵 Gear pumps |
| 05/24/2012 | WO2012067175A1 Oil pump device |
| 05/16/2012 | CN102459902A 用于润滑螺杆泵系统的方法和设备 Methods and apparatus for lubricating the screw pump system |
| 05/09/2012 | CN102449311A Screw spindle pump arrangement |
| 05/02/2012 | EP2447534A2 Electrically powered pump |
| 05/02/2012 | EP1943423B1 Pump arrangement |
| 04/25/2012 | CN202203110U 顺序控制双联转向泵 Sequence control double-steering pump |
| 04/12/2012 | WO2012045164A1 Dual outlet pump |
| 04/12/2012 | DE102010063547A1 Pumpe, Verdichter oder Motor mehrstufig oder mehrflutig Pump, compressor or motor or multistage multiflow |
| 04/11/2012 | EP2439411A1 Pump assembly, in particular for helicopter lubrication |
| 04/03/2012 | DE202012100756U1 Selbstangetriebene Zwillingsrotorpumpe Self-propelled twin rotor pump |
| 03/29/2012 | DE19923851B4 Hydraulische Zahnradmaschine Hydraulic gear machine |
| 03/28/2012 | CN202176509U 多级传动组合泵 Multi-stage transmission combination pump |
| 03/21/2012 | CN102384081A Pump apparatus |
| 02/29/2012 | CN202152732U 双联内啮合齿轮泵公共进出油泵体 Within double gear pump oil pump body of public access |
| 02/21/2012 | US8118579 Gear pump |
| 02/09/2012 | WO2011012364A3 Gear pump |
| 01/25/2012 | CN102333955A Integrated electric vane oil pump |
| 01/19/2012 | WO2011119464A4 Rotary infusion pumps |
| 01/19/2012 | WO2010119336A3 Aircraft main engine fuel pump with multiple gear stages using shared journals |
| 01/18/2012 | CN202117920U Automobile double-stage type hydraulic power-assisted steering vane pump |
| 01/18/2012 | CN102322420A Sequentially controlled twin steering pump |
| 01/17/2012 | US8096530 Flexible impeller pumps for mixing individual components |
| 01/11/2012 | CN102317571A Pump |
| 01/04/2012 | EP2401503A1 Integrated electric vane oil pump |
| 01/04/2012 | CN101223363B Gear pump |
| 01/03/2012 | US8087912 Crankshaft having first and second eccentric portions |
| 12/22/2011 | WO2011158167A2 Fluidic gear machine with flow rate regulation |
| 12/22/2011 | WO2011012362A3 Gear pump |
| 12/21/2011 | EP2396507A1 Pump |
| 12/08/2011 | DE102007042933B4 Mehrfachpumpensystem mit einer Leckölbohrung Multi-pump system with a drain hole |
| 12/07/2011 | CN102269163A 多级传动组合泵 Multi-stage transmission combination pump |
| 11/24/2011 | WO2011045171A3 Double internal gear pump |
| 11/23/2011 | CN202047982U Multiple gear pump stepped variable system |
| 11/22/2011 | US8062011 Compressor having an ejector oil pump |
| 11/17/2011 | WO2011140793A1 Multistage pneumatic motor |
| 11/17/2011 | WO2011119464A3 Rotary infusion pumps |
| 11/10/2011 | WO2011039128A3 Axial sealing element for an internal gear pump |
| 11/09/2011 | EP2385290A1 Lubricant pump and machine with such a lubricant pump |
| 11/02/2011 | CN101641040B Flexible impeller pumps for mixing individual components |
| 10/26/2011 | EP2379892A1 Fully submerged integrated electric oil pump |
| 10/19/2011 | EP1982073B1 Hydrostatic energy generation unit |
| 10/13/2011 | WO2011035971A3 Pump having an electric motor |
| 10/05/2011 | CN102207068A Integrated pump capable of connecting different power sources |
| 09/29/2011 | WO2011119464A2 Rotary infusion pumps |
| 09/29/2011 | CA2793661A1 Rotary infusion pumps |
| 09/28/2011 | CN102203422A Fully submerged integrated electric oil pump |
| 09/21/2011 | EP2366902A1 Pumping unit for feeding oil under pressure to a user |
| 09/14/2011 | CN101251108B Oil pump pressure control device |
| 08/17/2011 | CN102155404A Automobile twin-stage-type hydraulic power-assisted steering vane pump |
| 08/11/2011 | WO2011095148A2 Tandem pump |
| 08/11/2011 | DE102010007255A1 Fluid pump for use in machine housing, has rotary shaft arranged in fluid delivery volume, where impeller is arranged at shaft |
| 08/10/2011 | CN102146917A Air vent structure of oil pump of automatic transmission |
| 08/03/2011 | CN102141040A Multi-gear pump stepped variable system |
| 07/13/2011 | EP2342461A2 Supercharger system for motorized vehicles and related transportation |
| 07/06/2011 | CN101191484B Multi-level pump device |
| 06/29/2011 | CN201884278U High-temperature, high-pressure double gear pump |
| 06/22/2011 | DE102010054250A1 Hydrauliksteuerung Hydraulic control |
| 06/15/2011 | EP2333343A2 Electric pump and electric pump mounting structure |
| 06/09/2011 | US20110135526 Rotary compressor |
| 06/01/2011 | DE102009047213A1 Method for testing circuit separation of double toothed wheel pump i.e. double internal toothed wheel pump in slip-controlled hydraulic brake system of vehicle, involves testing pressure in geared pumps |
| 05/31/2011 | USRE42408 Oil pump and gears |
| 05/26/2011 | DE102010044070A1 Rotationspumpenvorrichtung und Fahrzeugbremssteuerungssystem Rotary pump apparatus and vehicle braking control system |
| 05/17/2011 | US7942567 Extruder system with integrated gear pump |
| 05/05/2011 | WO2010115695A3 Combined oil delivery and vacuum pump |
| 05/04/2011 | CN201818497U Automotive hydraulic steering pump with dual stators and dual valve bodies |
| 04/27/2011 | CN102037244A Underwater delivery unit |
| 04/21/2011 | WO2011045171A2 Double internal gear pump |
| 04/20/2011 | EP2312161A2 Metering device |
| 04/20/2011 | CN102022321A Pump assembly |
| 04/14/2011 | DE102009045574A1 Doppel-Innenzahnradpumpe Two internal gear pump |
| 04/06/2011 | EP2306023A2 Nested motor, reduction motor, reduction gear and pump with selectable mounting options |
| 04/06/2011 | EP2304240A1 A pumping system and a method for pumping fluids |
| 03/31/2011 | WO2010126651A3 Method and apparatus for lubricating a screw pump system |
| 03/17/2011 | US20110062773 Pump assembly |
| 02/16/2011 | EP1397311B1 Device for thickening or dewatering sludge, watery sediments or the like, especially surplus sludge in sewage treatment plants |
| 02/10/2011 | DE202010015203U1 Radkolbenmaschine Radkolbenmaschine |
| 01/26/2011 | EP2278165A2 Rotary piston pump with angular gear |
| 01/19/2011 | CN101949385A Hydraulic power-assisted steering pump with double stators and double valve bodies for vehicles |