| Patents for F04C 2 - Rotary-piston machines or pumps (14,296) |
|---|
| 09/07/2000 | DE19909963A1 Van or roller-cell displacement pump, with second bypass channel between throttle channel and outlet channel |
| 09/06/2000 | EP1033474A1 Positive-displacement piston mechanism of rotary piston structure |
| 09/05/2000 | US6114784 Motor with cooling structure |
| 09/05/2000 | US6113360 Gerotor pump |
| 08/31/2000 | DE19858483A1 Hydraulische Verdrängermaschine, insbesondere Verdrängerpumpe Hydraulic displacement, particularly positive displacement pump |
| 08/30/2000 | CN2394028Y Low speed bidirectional immersed screw-rod pump |
| 08/30/2000 | CN1264792A Blade-type rotary compressor |
| 08/30/2000 | CN1264791A Conic screw compressor |
| 08/29/2000 | US6109900 Hydraulic pump |
| 08/23/2000 | CN1264454A Rotary pump with hydraulic vane actuation |
| 08/22/2000 | US6106257 Hydraulic power transmission system |
| 08/22/2000 | US6106256 Gear rotor fuel pump |
| 08/22/2000 | US6106250 Lobed-rotor-type pump having a communication passage between working-fluid chambers |
| 08/22/2000 | US6106240 Gerotor pump |
| 08/17/2000 | WO2000047897A1 Twin delivery screws provided for installation in positive-displacement machines, especially pumps |
| 08/17/2000 | DE10004028A1 Variable displacement pump for e.g. power steering in motor vehicles has first and second fluid pressure chambers on either side of cam ring separate from pump outlet flow paths |
| 08/17/2000 | CA2362075A1 Twin delivery screws provided for installation in positive-displacement machines, especially pumps |
| 08/15/2000 | US6102684 Cavitation noise abatement in a positive displacement fuel pump |
| 08/15/2000 | US6102681 Stator especially adapted for use in a helicoidal pump/motor |
| 08/10/2000 | WO2000046498A1 Improved hydraulic and/or wind generator |
| 08/10/2000 | DE19904911A1 Automatic transmission for motor vehicles has intermediate plate between hydraulic control and oil pump, with adapter having sealed oil flow bores |
| 08/10/2000 | DE19904339A1 Hydrostatische Pumpe Hydrostatic pump |
| 08/09/2000 | EP1026401A2 Hydrostatic pump |
| 08/09/2000 | EP1026400A2 Gerotor motor |
| 08/09/2000 | EP1026399A1 Twin feed screw |
| 08/09/2000 | EP1025363A1 Positive-displacement pump |
| 08/09/2000 | EP1025362A1 Downhole roller vane motor and roller vane pump |
| 08/09/2000 | EP1025360A1 Internal gear machine |
| 08/09/2000 | CN2391033Y Soft contact high pressure vane pump |
| 08/09/2000 | CN2391032Y Low pulsating rotary pump |
| 08/09/2000 | CN1262720A Fluid pump |
| 08/08/2000 | US6099280 Two speed geroter motor with external pocket recirculation |
| 08/08/2000 | US6099261 Roller vane stage for a fuel pump |
| 08/02/2000 | EP1023525A1 Improved stator especially adapted for use in a helicoidal pump/motor |
| 08/02/2000 | CN2390029Y 可调式齿轮油泵 Adjustable gear pumps |
| 08/01/2000 | US6095783 Fluid mover |
| 08/01/2000 | US6095782 Crescentless internal gear pump |
| 08/01/2000 | US6095781 Timed element, high pressure, industrial rotary lobe pump |
| 08/01/2000 | US6095773 Vane cell pump |
| 07/27/2000 | WO2000043673A1 Efficient multistage pump |
| 07/26/2000 | CN2389243Y 梭阀转子泵 Shuttle valve rotor pump |
| 07/25/2000 | US6093009 Apparatus and method for controlling angular relation between two rotating shafts |
| 07/25/2000 | US6093006 Non-crescent seal internal gear pump with sealing elements inserted in the tooth tips |
| 07/25/2000 | US6093004 Pump/motor apparatus using 2-lobe stator |
| 07/25/2000 | US6092994 Liquid delivery device, method of controlling such liquid delivery device, and liquid delivery pump |
| 07/25/2000 | US6092283 Method and apparatus for producing a gear pump |
| 07/20/2000 | WO2000042321A1 Hydraulic machine comprising dual gerotors |
| 07/20/2000 | WO1999025954A9 Positive-displacement piston mechanism of rotary piston structure |
| 07/20/2000 | DE19962798A1 Fluid roller device for air compressors and vacuum pumps has lubricating pump and lubricant suction passage with outlet in circulating roller element supplying intake lubricant to lubricating sites |
| 07/20/2000 | DE19957886A1 Displacement pump eg for power assisted vehicle steering systems |
| 07/20/2000 | DE19930911C1 Geared pump has a pinion with external teeth and a meshing hollow wheel with internal teeth and axial disks and springs for a reversing action with axial compensation for the high pressures in the closed circuit |
| 07/19/2000 | EP1020645A1 Multi-stage Roots pump and method of producing the housing |
| 07/19/2000 | EP1019116A1 A rotary pump with hydrodynamically suspended impeller |
| 07/19/2000 | CN1260732A Mixing apparatus |
| 07/18/2000 | US6089843 Sliding member and oil pump |
| 07/18/2000 | US6089842 Gear oil pump with internal rotor, comprising extensions of reniform suction and pressure elements |
| 07/18/2000 | US6089841 Crescent gear pump |
| 07/11/2000 | US6086348 Fuel injection pump for internal combustion engines |
| 07/11/2000 | US6086347 Two-stage rotary vane motor |
| 07/11/2000 | US6086345 Two-piece balance plate for gerotor motor |
| 07/11/2000 | US6086344 Hydraulic motor lubrication path |
| 07/11/2000 | US6086337 Variable capacity pump |
| 07/05/2000 | EP1016784A1 Internal gear pump |
| 07/05/2000 | EP1015769A1 Fluid pump with a flexible toothed belt |
| 07/05/2000 | EP1015735A2 Screw conveyor for the transport of liquid substances and/or lumps of materials |
| 07/05/2000 | EP1015103A1 A mixing apparatus |
| 07/05/2000 | CN2386216Y 机油泵 Oil Pump |
| 07/05/2000 | CN1258816A Cavity-separating rotating displacement pump |
| 07/04/2000 | US6082985 Screw compressor |
| 07/04/2000 | US6082984 Fluid pump having pressure pulsation reducing passage |
| 07/04/2000 | US6082983 Vane pump |
| 07/04/2000 | US6082980 Helical gear pump |
| 06/29/2000 | DE19857599A1 Positive displacement pump preferably for use for medical purposes has fluid pumped by magnets that are driven by step motor |
| 06/28/2000 | EP1013933A2 Roller vane pump |
| 06/28/2000 | EP1013932A2 Roller vane pump |
| 06/28/2000 | EP1013926A1 Hydraulic positive displacement machine, in particular pump |
| 06/27/2000 | US6079955 Variable displacement pump |
| 06/27/2000 | CA2086554C Rotary disc pump |
| 06/21/2000 | CN2384005Y Split-combined double screw pump |
| 06/20/2000 | US6077059 Oil pump rotor |
| 06/15/2000 | WO2000034554A1 Extrusion pump |
| 06/15/2000 | DE19843333A1 Universal ball joint for pump operation has clutch capable of angular movement forming a link between power plant and power take-off point with bolt fitted through the hole |
| 06/14/2000 | EP1008754A2 Positive displacement pump systems |
| 06/14/2000 | EP1008753A2 A vane pump |
| 06/14/2000 | EP1007850A1 Rotary pump with hydraulic vane actuation |
| 06/14/2000 | EP1007821A1 Rotary piston engine |
| 06/13/2000 | US6074189 Filling member-less internal-gear machine |
| 06/13/2000 | US6074188 Multi-plate hydraulic motor valve |
| 06/13/2000 | US6074184 Pump utilizing helical seal |
| 06/08/2000 | WO2000032935A1 Gear pump, fuel feed device using the gear pump, and gear motor |
| 06/08/2000 | WO2000032315A1 A gear pump and replaceable reservoir for a fluid sprayer |
| 06/07/2000 | EP1006281A1 Multi-stage roots pump |
| 06/07/2000 | EP1006280A1 Spherical gear pump |
| 06/07/2000 | EP1005613A1 Low noise suction pump |
| 06/07/2000 | EP0993554A4 Improvements to impeller pumps |
| 06/07/2000 | CN2381814Y Wheel style centrifugal plunger pump |
| 06/07/2000 | CN2381813Y Body of roller style rotor pump |
| 06/07/2000 | CN2381812Y Three srew-rod pump |
| 06/07/2000 | CN1255580A Wheel-rotating engine and wheel-rotating pump |
| 06/06/2000 | US6071105 Gear pump for feeding fuel to a fuel injection pump |