| Patents for F04C 2 - Rotary-piston machines or pumps (14,296) |
|---|
| 11/12/1997 | EP0701661B1 Gear pump with controlled clamping force |
| 11/12/1997 | CN1164887A Internally geared pump without filler element |
| 11/11/1997 | US5685704 Rotary gear pump having asymmetrical convex tooth profiles |
| 11/11/1997 | US5685266 In an engine |
| 11/06/1997 | DE19717174A1 High-capacity air pump in vehicle |
| 11/06/1997 | DE19616880A1 Pump with two- or three-cornered rotors |
| 11/04/1997 | US5682793 Engaged rotor |
| 10/30/1997 | WO1997040273A1 Progressive cavity pumps using composite materials |
| 10/30/1997 | DE19716439A1 Rotary swing=vane pump |
| 10/29/1997 | EP0760907B1 Vane cell pump |
| 10/29/1997 | CN2266048Y Swing roller vane pump |
| 10/29/1997 | CN1036290C Engagement type rotor |
| 10/23/1997 | DE19615849A1 Hydraulic machine with meshing internal and external teeth |
| 10/23/1997 | DE19615725A1 Gear pump for fluids |
| 10/22/1997 | EP0802327A1 Gear pump |
| 10/22/1997 | CN1162701A Vane pump |
| 10/22/1997 | CN1162700A Variable capacity refrigerant compressor |
| 10/14/1997 | US5676532 Adjustable one-way rotary liquid pumping device |
| 10/09/1997 | WO1997037132A1 Rotary pump |
| 10/09/1997 | DE19613835A1 Inner toothed wheel machine (Pump or engine) |
| 10/09/1997 | DE19613833A1 Gear pump with meshing internal and external toothed wheels |
| 10/08/1997 | EP0799996A2 Epitrochoidal pump |
| 10/08/1997 | CN1036088C Multi-function variable vane pump and motor |
| 10/07/1997 | US5674060 Hydraulic internal gear machine having a fluid pressure biased sealing plate |
| 10/02/1997 | DE19612519A1 Hydraulic transmission for bicycles |
| 10/02/1997 | DE19612499A1 Hydraulic motor or pump |
| 10/01/1997 | EP0798462A1 Gear machine |
| 09/25/1997 | WO1997035096A1 Magnetic drive and suspension system for positive displacement planetary vane pumps |
| 09/24/1997 | EP0797002A1 Rotary positive displacement hydraulic machines |
| 09/24/1997 | EP0797001A1 Rotary pump |
| 09/23/1997 | US5669761 Discharge control apparatus of hydraulic pump for automatic transmission |
| 09/20/1997 | CA2196250A1 Progressing cavity pumps with split extension tubes |
| 09/18/1997 | WO1997034085A2 Sliding vane pump with plastic housing |
| 09/17/1997 | EP0795086A1 Vane pump |
| 09/10/1997 | CN2262119Y 油泵总成 Pump assembly |
| 08/27/1997 | EP0791750A1 Rotor for turbomachine and method of making the same |
| 08/27/1997 | EP0791749A1 Gerotor motor |
| 08/27/1997 | CN2260904Y Positive offset type cam rotor vane pump |
| 08/26/1997 | US5660531 Gear pump with minimized canitation |
| 08/20/1997 | EP0790410A1 Gerotor motor |
| 08/20/1997 | EP0789814A1 Internally geared pump without filler element |
| 08/20/1997 | EP0533950B1 Rotor made of aluminum alloy for oil pump and method of manufacturing said rotor |
| 08/19/1997 | US5658138 Rotary pump having inner and outer components having abutments and recesses |
| 08/19/1997 | US5658137 Vane rotator with conical bearing and brake |
| 08/14/1997 | DE19604517A1 Geared pump for vehicle gearchange mechanism |
| 08/13/1997 | CN1156987A Modular dispenser for multiple fluids |
| 08/12/1997 | US5655892 Thermally actuated fuel pump vapor vent valve |
| 08/06/1997 | EP0787902A2 Rotary pump |
| 08/06/1997 | EP0787260A1 Multiple-chamber gear pump |
| 07/30/1997 | EP0786058A1 Automatic gearbox, in particular for motor vehicles |
| 07/29/1997 | US5651930 Composite fiber rotor vane |
| 07/29/1997 | US5651301 Hydrostatic piston machines |
| 07/23/1997 | EP0785360A1 Oil pump rotor |
| 07/23/1997 | CN1155039A Tooth screw stem |
| 07/22/1997 | US5649815 Hydraulic machine and method of producing the contour of a gearwheel of a hydraulic machine |
| 07/17/1997 | DE19600740A1 Vane pump |
| 07/16/1997 | CN1035450C Rotary compressor |
| 07/10/1997 | WO1997024530A1 Vane pump |
| 07/08/1997 | US5645896 Method of applying a filled in metal carbide hard facing to the rotor of a progressing cavity pump |
| 07/01/1997 | US5642991 Sliding vane pump with plastic housing |
| 06/26/1997 | WO1997022807A2 Vane pump for conveying viscous substances |
| 06/25/1997 | EP0780575A1 Gear machine |
| 06/19/1997 | WO1997021925A1 Double worm system |
| 06/19/1997 | DE19546329A1 Vane cell pump housing |
| 06/18/1997 | EP0779432A1 Oil pump rotor |
| 06/17/1997 | US5639230 Gear pump or motor having compensation for volume flow fluctuations |
| 06/17/1997 | US5639220 Pump with inlet and outlet simultaneously exposed to pump chamber and method of operating same |
| 06/17/1997 | US5638600 Method of making an efficiency enhanced fluid pump or compressor |
| 06/12/1997 | WO1997021032A1 Vane pump |
| 06/12/1997 | WO1997021031A1 Pump or motor |
| 06/11/1997 | EP0778418A1 Rotary pump |
| 06/11/1997 | EP0778417A2 Gear pump |
| 06/11/1997 | EP0656098B1 Compact gerotor pump |
| 06/11/1997 | CN2256045Y 齿轮泵 Gear pumps |
| 06/11/1997 | CN2256044Y Pulsing infusion pump with elastic pipe-wall |
| 06/05/1997 | WO1997020143A1 Fluid pump with bearing set having lubrication path |
| 06/04/1997 | CN1035079C Roots pump rotor |
| 06/03/1997 | US5634783 Guided-vane rotary apparatus with improved vane-guiding means |
| 05/29/1997 | WO1997019268A1 Vane pump |
| 05/28/1997 | EP0775618A1 Hydraulic brake system for vehicles with wheel slip control device |
| 05/28/1997 | EP0775261A1 Rotary pump |
| 05/28/1997 | EP0775086A1 Modular dispenser for multiple fluids |
| 05/22/1997 | DE19542527A1 Supply device for conveying and/or processing low viscosity fluid |
| 05/21/1997 | EP0774057A1 Spherical piston radial action engine |
| 05/21/1997 | EP0658241B1 Hydraulic motor |
| 05/15/1997 | DE19542265A1 Diesel feed pump for high pressure pump |
| 05/14/1997 | EP0772741A1 Machine based on an internally geared wheel |
| 05/14/1997 | EP0638144B1 Gear machine |
| 05/14/1997 | EP0620896B1 Water power engine |
| 05/13/1997 | US5628626 Hydraulic Machine |
| 05/07/1997 | CN1149108A Perfected twin-screw pump, particularly suitable for pumping of biphase fluids in submarine environment |
| 05/02/1997 | EP0770464A1 Composite fiber rotor vane and method for its production |
| 04/30/1997 | DE19534798A1 Vorrichtung zum Fördern von Luft An apparatus for conveying air |
| 04/30/1997 | CN1148671A Rotor pump |
| 04/29/1997 | US5624249 Pumping process for operating a multi-phase screw pump and pump |
| 04/29/1997 | US5624248 Gerotor motor and improved balancing plate seal therefor |
| 04/23/1997 | EP0769621A1 Micropump and micromotor |
| 04/23/1997 | EP0769104A1 Helical gear pump or motor |
| 04/23/1997 | EP0769103A1 Gerotor-type pump |
| 04/16/1997 | EP0767866A1 Non-contact vane-type fluid displacement machine with consolidated vane guide assembly |