| Patents for F04C 2 - Rotary-piston machines or pumps (14,296) |
|---|
| 05/05/2004 | CN1494474A Screw pump and multi-screw extruder comprising screw pump of this type |
| 05/04/2004 | US6729863 Rotary pump having high and low pressure ports in the housing cover |
| 05/04/2004 | US6729862 Rotary piston machine |
| 05/04/2004 | US6729855 Oil pump and gears |
| 05/04/2004 | US6729391 Insertable progressing cavity pump |
| 05/04/2004 | US6729307 Bypass/leakage cooling of electric pump |
| 04/29/2004 | WO2004036050A1 Fluid displacement device |
| 04/29/2004 | WO2004036043A1 Stator of a moineau-pump |
| 04/29/2004 | US20040081570 Positive-displacement rotary pump |
| 04/29/2004 | CA2409985A1 Rotary drive downhole pumping system |
| 04/28/2004 | EP1413757A2 Assembly of a motor and a pump |
| 04/28/2004 | EP1208302B1 Dual lobe, split ring, variable roller vane pump |
| 04/27/2004 | US6725644 Combined input and output system for an internal combustion engine and turbine power plant |
| 04/22/2004 | WO2004033915A1 Rotary compressor |
| 04/22/2004 | WO2004033911A1 Integrated speed reducer and pump assembly |
| 04/22/2004 | WO2004033910A1 Functionalities of axially movable spool valve |
| 04/22/2004 | WO2004033187A1 Extruder/gear pump assembly |
| 04/22/2004 | US20040076536 Variable displacement pump |
| 04/21/2004 | EP1411246A2 Internal gear pump with a toothed ring gear and an interacting pinion gear |
| 04/21/2004 | EP1409874A2 Reduced wear rotor and pump comprising same |
| 04/21/2004 | CN2612822Y Heavy pressure gear oil pump |
| 04/21/2004 | CN1491323A Device for axially conveying fluids |
| 04/21/2004 | CN1490525A Radial double-acting axial-flow ram pump |
| 04/21/2004 | CN1490524A Hydraulic gear pump |
| 04/15/2004 | WO2004031584A1 Eccentric screw pump |
| 04/15/2004 | US20040071559 Integrated speed reducer and pump assembly |
| 04/15/2004 | DE10344935A1 Pinion, for a geared pump with inner teeth, has a bearing bush for rotation around the journal together with a spring packet within the pinion between it and the bearing bush |
| 04/15/2004 | DE10341897A1 Getriebe-Baugruppe für eine Kraftstoffpumpe in Kraftfahrzeugen mit Funktionen zum Heben und zum Schmieren Gear assembly for a fuel pump in motor vehicles with features designed to handle and lubrication |
| 04/15/2004 | DE10259444B3 Conveyor screw for screw type pump has asymmetrical rotor profile for reduced profile-dependent flank gaps, with convex flank section for increased sealing surface |
| 04/14/2004 | EP1407145A1 Hydraulic motor system |
| 04/14/2004 | CN2611636Y 便携式输油泵 Portable pump |
| 04/14/2004 | CN1488859A G-rotor pump |
| 04/13/2004 | US6719543 Selectively adjustable fixed displacement vane pump |
| 04/13/2004 | CA2351596C A gear pump and replaceable reservoir for a fluid sprayer |
| 04/08/2004 | WO2003069161A8 Variable-delivery rotary vane pump |
| 04/08/2004 | WO2003069127A8 Variable-delivery central-vane rotary pump, particularly for oil |
| 04/08/2004 | US20040067151 Oil pump rotor |
| 04/08/2004 | US20040067150 Oil pump rotor |
| 04/08/2004 | US20040067148 Functionalties of axially movable spool valve |
| 04/08/2004 | DE20318594U1 Schraubenspindelpumpe zum Fördern eines Strömungsmediums Screw pump for conveying a fluid medium |
| 04/08/2004 | DE10343395A1 Hydraulische Maschine Hydraulic machine |
| 04/08/2004 | DE10245306A1 Extruder and gear pump combination for processing rubbers and plastics incorporates the pump shaft inside the hollow screw shaft |
| 04/08/2004 | DE10244562A1 Coolant compressor has pump housing enclosing lower sector of drive shaft, which is directly connected to driven displacement element |
| 04/08/2004 | DE10103580B4 Magnetgekuppelte Drehschieberverdrängerpumpe Magnetically Drehschieberverdrängerpumpe |
| 04/07/2004 | EP1406016A1 Progressive cavity pumps using composite materials |
| 04/07/2004 | EP1406015A1 Internal gear pump with improved filling |
| 04/07/2004 | EP1404973A1 Method for making a moineau pump stator and resulting stator |
| 04/07/2004 | CN1487196A Oil pump roter |
| 04/06/2004 | US6716010 Bearing arrangement |
| 04/06/2004 | US6716008 Eccentric screw pump with expanded temperature range |
| 04/06/2004 | US6715847 Rotary pump with higher discharge pressure and brake apparatus having same |
| 04/01/2004 | US20040062672 Transition valving by means of non-return valves |
| 04/01/2004 | US20040062669 Eccentric screw pump with expanded temperature range |
| 04/01/2004 | DE202004000189U1 Pump for viscous liquids has a wave shaped rotor with profiled edges locating in a profiled slot in a slider |
| 04/01/2004 | DE202004000188U1 Pump for viscous liquids has a profiled rotor with a slider and with an elastic seal between the slider and the pump housing |
| 04/01/2004 | DE202004000186U1 Pump for viscous liquids has a wave shaped rotor and with seals between the stator and the pump housing |
| 04/01/2004 | DE202004000185U1 Pump for viscous fluids has flat sealing surfaces on both sides of a wave shaped rotor for improved seal with the pump slider |
| 04/01/2004 | DE202004000184U1 Pump for viscous fluids has the rear wall and outer wall of the pumping chamber lined with a material which prevents contact between the pumped fluid and the pump |
| 04/01/2004 | DE202004000183U1 Pump for viscous fluids has a drive shaft bearing inside a hollow support and positioned inside a hollow hub mounting for the pump rotor |
| 04/01/2004 | DE10243674B3 Exzenterschneckenpumpe mit Reservestator Pump with Reservestator |
| 03/31/2004 | CN2608724Y 平衡式凸轮转子泵 Balanced lobe pump |
| 03/31/2004 | CN2608723Y Thermal insulating screw pump |
| 03/31/2004 | CN2608722Y Diesel emulsified pump |
| 03/31/2004 | CN1486404A Lubrication pump for inter-axle differential |
| 03/25/2004 | WO2004025124A1 Stator for a spindle drag pump |
| 03/25/2004 | WO2003083311B1 Motor pump |
| 03/25/2004 | US20040057860 Trochoidal pump |
| 03/25/2004 | US20040057846 Eccentric screw-type pump with spare unit |
| 03/25/2004 | DE10333815A1 Schweißverfahren und rohrförmiges Element sowie Zahnradpumpe, die mit dem Schweißverfahren hergestellt ist Welding processes and tubular member as well as gear pump, which is produced by the welding process |
| 03/24/2004 | EP1400694A2 Moineau-type pump with spare stator |
| 03/24/2004 | EP1400693A2 Moineau-type pump with modular replacement unit |
| 03/24/2004 | CN2607457Y Engine oil pump for motorcycle engine |
| 03/24/2004 | CN1143060C 涡旋压缩机 Scroll Compressor |
| 03/23/2004 | US6709250 Gear and a fluid machine with a pair of gears |
| 03/23/2004 | US6709245 Regulated pump |
| 03/23/2004 | US6709242 Variable displacement pump |
| 03/18/2004 | WO2004022976A1 Closed system rotary machine |
| 03/18/2004 | US20040052670 Rotor with a hydraulic overbalancing recess |
| 03/18/2004 | US20040052669 Multi-plate hydraulic manifold |
| 03/18/2004 | US20040052668 Gerotor motor with valve in rotor |
| 03/18/2004 | US20040052667 Hydraulic device with balanced rotor |
| 03/18/2004 | DE10333564A1 Oil seal structure for e.g. oil pump, shock absorber of brake actuator in motor vehicles has oil seal chamber that is formed between high and low pressure seals, and which is filled with oil |
| 03/18/2004 | DE10239558A1 External gearwheel pump has at least one compressed fluid feed opening out on LP side in feed cell which lies radially opposite one radial sealing land |
| 03/18/2004 | DE10239364A1 Einrichtung zur Regelung der Pumpleistung einer Schmiermittelpumpe für eine Brennkraftmaschine Means for controlling the pumping capacity of a lubricant pump for an internal combustion engine |
| 03/17/2004 | EP1397595A1 Liquid seal pump of the helical screw type |
| 03/17/2004 | EP1397311A2 Device for thickening or dewatering sludge, watery sediments or the like, especially surplus sludge in sewage treatment plants |
| 03/17/2004 | CN2606814Y Flexible inner engaged and external embedded blade type gear pump |
| 03/17/2004 | CN1482362A Rotary pump |
| 03/17/2004 | CN1482361A Trochoidal pump |
| 03/16/2004 | US6705849 Discharge porting design for screw compressor |
| 03/16/2004 | US6705847 Rotary displacement machine having at least two annular displacement gears and supply channels |
| 03/11/2004 | WO2004020831A1 Device for adjusting the pumping capacity of a lubricant pump for an internal combustion engine |
| 03/11/2004 | WO2004020830A1 Toothed wheel feed pump |
| 03/11/2004 | WO2004020829A1 Toothed wheel feed pump |
| 03/11/2004 | WO2004020828A1 Screw compressor discharge flow guide |
| 03/11/2004 | WO2004020826A2 Gerotor mechanism |
| 03/11/2004 | US20040047741 Vane pump with undervane feed |
| 03/11/2004 | DE20319534U1 Antriebsvorrichtung Driving device |
| 03/11/2004 | DE20317640U1 Hydraulic gear pump has at least one notch in sealing plate and/or non-rotating component for hydrostatic pressurizing |
| 03/11/2004 | DE10240287A1 Pump unit for slip-controlled vehicle braking systems has receiving body for hydraulic components, internal gear pump and bearing ring |