| Patents for F04C 2 - Rotary-piston machines or pumps (14,296) |
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| 04/24/2008 | US20080095652 Roudong Volume Variation Method for Fluid Machinery and Its Mechanisms and Applications |
| 04/24/2008 | DE102006048989A1 Fördereinrichtung, insbesondere zum Fördern von Brennstoff zu einem Fahrzeugheizgerät Conveying means, in particular for feeding fuel to a vehicle heating device |
| 04/24/2008 | DE102006048899A1 Conveying assembly i.e. roll-cell pump for delivering fuel, has compensation channel connecting groove chamber with working chamber, and enlarging end section facing working chamber, where channel runs diagonally with respect to flute base |
| 04/23/2008 | EP1914426A1 Method and apparatus for extracting and inserting the rotor of a rotary pump |
| 04/23/2008 | EP1914381A1 Pumping device, in particular for pumping fuel to a vehicle heating device |
| 04/23/2008 | CN201050478Y Gear pump with cylinder roller bearing |
| 04/23/2008 | CN201050477Y Hydraulic pump installed with unloading protecting valve |
| 04/23/2008 | CN201050476Y Double screw bolt emulsifying explosive feeding pump |
| 04/23/2008 | CN101166903A 旋转式压缩机 Rotary compressor |
| 04/23/2008 | CN101164708A Steam cleaning appliance and pump |
| 04/23/2008 | CN100383392C Axial housing type gear pump equipped with rolling bearing and gear motor |
| 04/22/2008 | US7361005 Rotary compressor having discharge muffling |
| 04/22/2008 | US7361002 Oil pump |
| 04/17/2008 | US20080091265 Device for axially conveying fluids |
| 04/17/2008 | DE202008001463U1 Einrichtung zur Verdrehsicherung eines Stators einer Exzenterschneckenpumpe Means for preventing rotation of an eccentric screw pump stator |
| 04/17/2008 | DE102007045980A1 Inner-axial rotary piston machine i.e. screwing machine, for motor vehicle, has rotors axially elongated in its geometries according to rotary ratio and rotatably implemented, where axes of rotors are arranged together in v-shape |
| 04/17/2008 | DE102006047510A1 Vane-cell pump for fuel transport, has multiple vanes with stator that are surrounded by external ring, and spring of vane-cell pump vanes against external ring |
| 04/16/2008 | EP1911974A1 Pressure regulation for controlled outer gearwheel oil pump |
| 04/16/2008 | CN201047347Y External gear type oil pump |
| 04/16/2008 | CN101163883A Vane machine, in particular vane pump |
| 04/10/2008 | WO2008040354A1 Hydraulic machine |
| 04/10/2008 | WO2007123607A8 Variable displacement sliding vane pump |
| 04/10/2008 | US20080085208 Oil Pump Rotor Assembly |
| 04/10/2008 | US20080085205 Compressor |
| 04/10/2008 | US20080085203 Progressing cavity pump with wobble stator and magnetic drive |
| 04/10/2008 | DE102006047312A1 Hydraulische Maschine Hydraulic machine |
| 04/09/2008 | EP1908956A1 Progressing cavity pump with wobble stator and magnetic drive |
| 04/09/2008 | CN101158350A Oil pump rotor end-face compensate pressure booster |
| 04/09/2008 | CN101158349A Gear ring pump |
| 04/09/2008 | CN101158348A Rotor pump with double pendulum lines |
| 04/09/2008 | CN100379991C Variable displacement pump |
| 04/09/2008 | CN100379990C Vane pump |
| 04/08/2008 | US7354257 Refrigerating cycle or compressor having foreign matter collector |
| 04/08/2008 | US7354253 Oil pump |
| 04/08/2008 | US7354188 Gear pump having input and output screw shafts with a decreasing flight depth toward a gear section in transfer mix areas |
| 04/06/2008 | CA2605039A1 Progressing cavity pump with wobble stator and magnetic drive |
| 04/03/2008 | WO2008038638A1 Variable displacement vane pump |
| 04/03/2008 | WO2008037525A1 Gear pump with reduced pressure impulses on the conveyor side |
| 04/03/2008 | WO2007133122A3 Vane machine |
| 04/03/2008 | US20080080997 Screw Compressor |
| 04/03/2008 | US20080080996 Screw rotor |
| 04/03/2008 | DE102007046420A1 Hydraulic device, has meshed gear wheels, which are provided with external helical gear, and control groove provided at front side of gear and periodically producing pressure compensated connection during rotation of gear wheels |
| 04/03/2008 | DE102006046457A1 Dosing device for metering out free-flowing substances has a flexible membrane to apply pressure onto a substance to be dosed out along with a storage device and a pulsation absorber |
| 04/03/2008 | DE102006045932A1 Zahnradpumpe mit reduzierten Druckpulsationen auf der Förderseite Gear pump with reduced pressure pulsations on the delivery side |
| 04/02/2008 | EP1906020A2 Fluid pump with adjustable conveyor volume |
| 04/02/2008 | CN201043522Y Sealing device for high-pressure gear pump |
| 04/02/2008 | CN201043521Y Floating shaft sleeve for high-pressure gear pump |
| 04/02/2008 | CN201043520Y Low-noise low-pressure gear pump |
| 04/02/2008 | CN201043519Y High-efficiency heat-proof bidirectional fluid pump |
| 04/02/2008 | CN101153591A Circular side bevel rotor pump |
| 04/02/2008 | CN101153590A Hydrodynamic unit |
| 04/02/2008 | CN100377859C Extruder/gear pump assembly |
| 04/01/2008 | US7351046 Shaft-hub connection |
| 04/01/2008 | US7351045 Rotational inhibitor for compressor lubricant |
| 03/27/2008 | DE102006044948A1 Vane pump for e.g. conveying liquid medium i.e. oil, has outer lying working space formed at outer wall of rotor and inner wall of housing, and inner lying working space formed between side walls, inner wall of rotor and outer wall of shaft |
| 03/27/2008 | DE102006043293A1 Gear pump i.e. extrusion pump, has bearing cone guided into bearing house and attached at bearing journal, where bearing cone or bearing journal has channel of extruder screw, which conveys from gear pump |
| 03/26/2008 | CN201041283Y Bi-directional drive oil lubrication pump |
| 03/26/2008 | CN201041156Y Water circulation pump structure |
| 03/26/2008 | CN201041155Y Low pressure large displacement gear oil pump |
| 03/26/2008 | CN201041154Y Horizontal type wind-cooling double-suction double screw pump |
| 03/26/2008 | CN201041153Y Horizontal type water-cooling double-suction double screw pump |
| 03/26/2008 | CN201041152Y Horizontal type double-suction double screw pump |
| 03/26/2008 | CN201041151Y Spiral rotor pump |
| 03/26/2008 | CN201041150Y Engine rotor engine oil pump |
| 03/26/2008 | CN101149052A Symmetrical form cavity pressurization and reclamation combination pump |
| 03/26/2008 | CN101149051A Metering pump |
| 03/26/2008 | CN100376815C Lubricating-fluid infusion apparatus |
| 03/26/2008 | CN100376796C Pump and ink jet printer mounting the pump |
| 03/26/2008 | CN100376728C Apparatus for injecting a liquid dye into a polymer melt |
| 03/25/2008 | US7347678 Friction reducing seal ring for gear pump |
| 03/25/2008 | US7347677 Vane pump |
| 03/25/2008 | US7347676 System for the construction of pumps, compressor, and motor engines, formed by a rotary chamber and pistons which are driven in the same direction at varying velocities alternatively opposite to each other, inside a fixed open or closed structure |
| 03/25/2008 | US7347675 Vane rotary expansion engine |
| 03/25/2008 | CA2282017C Progressing cavity pump |
| 03/20/2008 | US20080069715 Process for hardfacing a progressing cavity pump/motor rotor |
| 03/20/2008 | US20080069704 Pumping System |
| 03/19/2008 | EP1899607A1 Feed unit |
| 03/19/2008 | EP1899606A1 Gear pump with improved inlet port |
| 03/19/2008 | EP1523623B1 Non-proportional flow control valve for a vane pump |
| 03/19/2008 | EP1503034A4 Gerotor type machine |
| 03/19/2008 | CN101147001A Vane cell pump |
| 03/19/2008 | CN101147000A Vane cell pump |
| 03/19/2008 | CN101146999A Clamping device |
| 03/19/2008 | CN101144473A Constant breath curved line double-stator axial direction shuttle block pump |
| 03/19/2008 | CN101144461A Pore-pin type cycloid rotor motor |
| 03/18/2008 | US7344365 Scroll compressor with bypass holes communicating with an intake chamber |
| 03/18/2008 | US7344361 Variable-delivery vane pump |
| 03/18/2008 | US7343894 Modular rotary engine |
| 03/13/2008 | WO2008030228A1 Blending pump assembly |
| 03/13/2008 | WO2008029759A1 Screw pump and screw rotor |
| 03/13/2008 | WO2008029477A1 Gear pump |
| 03/13/2008 | WO2008028546A1 Hydrostatic energy generation unit |
| 03/13/2008 | US20080063554 Precision flow gear pump |
| 03/13/2008 | US20080063552 Single-vane rotary pump or motor |
| 03/13/2008 | DE102006041633A1 Pumpe Pump |
| 03/12/2008 | EP1320682B1 Vane pump |
| 03/12/2008 | CN201034076Y Single-acting vane type secondary element |
| 03/12/2008 | CN201034075Y Electrically controlled double-acting vane type secondary element |
| 03/12/2008 | CN201034074Y Double-acting vane type secondary element |
| 03/12/2008 | CN101139989A Pump |