| Patents for F04C 2 - Rotary-piston machines or pumps (14,296) |
|---|
| 02/16/1999 | CA2172744C Composite fiber rotor vane |
| 02/11/1999 | WO1999006710A1 Rotary pump with hydraulic vane actuation |
| 02/11/1999 | WO1999006709A1 Positive displacement pump |
| 02/11/1999 | DE19746769C1 Inner geared fluid pump or motor |
| 02/10/1999 | CN2307125Y Spray type pump with rolling blade |
| 02/10/1999 | CN2307124Y Adjustable gear pump |
| 02/10/1999 | CN1207794A Double worm system |
| 02/04/1999 | DE19834034A1 Oil pump for compact lubricating systems |
| 02/03/1999 | EP0894195A1 Progressive cavity pumps using composite materials |
| 02/03/1999 | CN2306339Y Rotary-vane vacuum pump of metallic frame supporting working panel |
| 02/03/1999 | CN2306338Y Screw pump with built-in oil chamber |
| 02/02/1999 | US5865239 Method for making herringbone gears |
| 02/02/1999 | CA2170926C Hardfacing for progressing cavity pump rotors |
| 01/27/1999 | CN2305505Y 环片旋转活塞泵 Ring piece rotary piston pump |
| 01/27/1999 | CN2305504Y Hollow rotar screw pump for oil production |
| 01/21/1999 | DE19820565A1 Geared pump for use in vehicles |
| 01/21/1999 | DE19745448C1 Pressure pump for motor vehicle power steering |
| 01/20/1999 | EP0891489A1 Gear oil pump with internal rotor, comprising extensions of reniform suction and pressure elements |
| 01/13/1999 | CN2303949Y Rotor pump of automatically compensating radial clearance |
| 01/13/1999 | CN1204736A Hydraulic machine |
| 01/13/1999 | CN1204735A Infinitely variable ring gear pump |
| 01/12/1999 | US5857842 Seamless pump with coaxial magnetic coupling including stator and rotor |
| 01/12/1999 | US5857589 Method and apparatus for accurately dispensing liquids and solids |
| 01/07/1999 | DE19828108A1 Lighting device for arranging an outside of car |
| 01/07/1999 | DE19827932A1 Hydraulic pump for e.g. vehicle power steering |
| 01/07/1999 | DE19827924A1 Vehicle power steering with hydraulic pump |
| 01/07/1999 | DE19827922A1 Hydraulic pump e.g. for vehicle power steering systems |
| 01/05/1999 | US5855197 Used with an internal combustion engine |
| 12/30/1998 | WO1998059171A1 Gear pump |
| 12/30/1998 | EP0887122A2 High pressure water cleaning device |
| 12/30/1998 | EP0886730A2 Sliding vane pump with plastic housing |
| 12/30/1998 | CN1203319A Suction-pressure type blade rotary pump |
| 12/24/1998 | DE19815832A1 Vane pump with pressure plates defining inlet and delivery zones |
| 12/24/1998 | DE19725462A1 Medizinische Zahnradpumpe zum Saugen und Spülen The medical gear pump for suction and irrigation |
| 12/23/1998 | WO1998058174A1 Medical gear pump for suctioning and rinsing |
| 12/23/1998 | EP0886083A2 Limited slip differential |
| 12/23/1998 | EP0789814B1 Internally geared pump without filler element |
| 12/23/1998 | CN2301558Y Sand immersible screw pump |
| 12/22/1998 | CA2174200C Scroll compressor having a suction check valve |
| 12/10/1998 | WO1998024722A3 Method and apparatus for accurately dispensing liquids and solids |
| 12/09/1998 | EP0882891A1 Moineau pump |
| 12/08/1998 | US5845617 Rotary gear pump with vanes |
| 12/03/1998 | DE19748427C1 Rotary piston engine |
| 12/03/1998 | DE19748426C1 Rotary piston internal combustion engine |
| 12/02/1998 | EP0881391A1 Floating seal for sealed star gerotor |
| 12/02/1998 | EP0881390A2 Oil pump apparatus |
| 12/02/1998 | CN1200440A Floating seal for sealed star gerotor |
| 12/02/1998 | CN1200439A Improved coupling for use with gerotor device |
| 12/01/1998 | US5842848 Compact high-volume gear pump |
| 12/01/1998 | US5842603 Postmix juice dispenser |
| 12/01/1998 | US5842449 Valve train with suction-controlled ring gear/internal gear pump |
| 11/26/1998 | DE19802264C1 Rotary pump for solid suspensions in fluids |
| 11/25/1998 | EP0879963A1 Coupling for use with a gerotor device |
| 11/25/1998 | EP0879962A1 Gear machine |
| 11/25/1998 | EP0879358A1 Rotary piston regulating device |
| 11/25/1998 | CN2298357Y Variable gear pump |
| 11/18/1998 | CN2297568Y 喷油回转活塞压缩机 Injection rotary piston compressor |
| 11/18/1998 | CN1040786C 叶片机 Blade machine |
| 11/12/1998 | DE19810318A1 Hydraulic machine as pump for power assisted steering |
| 11/12/1998 | DE19719134A1 Electrically-driven cogwheel pump |
| 11/11/1998 | EP0725901B1 Internally geared machine |
| 11/11/1998 | EP0542759B1 A multi-chamber rotary lobe fluid machine with positive sliding seals |
| 11/10/1998 | US5833445 Rotary pump having a compensating coupling |
| 11/10/1998 | US5833438 Variable displacement vane pump having cam seal with seal land |
| 11/10/1998 | US5832604 Method of manufacturing segmented stators for helical gear pumps and motors |
| 11/05/1998 | WO1998026181A3 Gerotor pump for liquid media |
| 11/04/1998 | CN1198198A Fuel injection pump for internal combustion engines |
| 11/03/1998 | US5829647 Metering gearhead dispensing apparatus having selectively positionable gear pumps |
| 10/29/1998 | WO1998048172A1 Improvements to impeller pumps |
| 10/29/1998 | WO1998048148A1 Fluid machine |
| 10/29/1998 | DE19717697A1 Inner gearwheel machine (pump or motor) |
| 10/29/1998 | DE19717295A1 Fluid-Maschine Fluid machine |
| 10/28/1998 | EP0874158A1 Vacuum pump with shaft seal |
| 10/28/1998 | EP0873474A1 Twin-cylinder impeller pump |
| 10/28/1998 | CN1197503A Calculation and precision processing of cardiocle and expanded cardioid casing curved surfaces for eccentric rotor vane pumps |
| 10/22/1998 | WO1998046884A1 Vane-cell pump |
| 10/22/1998 | WO1998046341A1 A mixing apparatus |
| 10/22/1998 | DE19715608A1 Rotary piston pump, particularly for delivery of fluids containing solid matter |
| 10/22/1998 | CA2286686A1 A mixing apparatus |
| 10/21/1998 | CN1040352C Internal gear pump for wide speed range |
| 10/20/1998 | US5823750 Housing arrangement for an external rotar driven lubricating pump |
| 10/15/1998 | DE19816173A1 Motor-driven fuel pump |
| 10/15/1998 | DE19714648A1 Fuel feed pump for IC engine |
| 10/14/1998 | EP0870926A1 Oil pump rotor |
| 10/14/1998 | CN2294344Y Single screw rod type pump having ellipse rotator |
| 10/13/1998 | US5820354 Cascaded progressing cavity pump system |
| 10/08/1998 | WO1998020259A3 Cascaded progressing cavity pump system |
| 10/01/1998 | WO1998042984A1 Positive displacement pump |
| 09/30/1998 | EP0821761B1 Rotary pump with single resilient vane |
| 09/29/1998 | US5813844 Oil pump rotor having a generated tooth shape |
| 09/24/1998 | WO1998041247A1 Artificial heart capable of being wholly implanted |
| 09/23/1998 | EP0866225A1 Internal gear pump without crescent filling piece with sealing elements inserted in the tooth heads |
| 09/23/1998 | EP0866224A1 Gear pump for the delivery of fluids |
| 09/23/1998 | EP0865575A1 Double worm system |
| 09/23/1998 | EP0786058B1 Automatic gearbox, in particular for motor vehicles |
| 09/23/1998 | EP0769103B1 Gerotor-type pump |
| 09/23/1998 | CN2292177Y Balance type combined gear pump, motor |
| 09/22/1998 | US5810571 Internal combustion engine oil pump |
| 09/17/1998 | WO1998040609A1 Rotary piston engine |
| 09/16/1998 | EP0864045A1 Fluid pump with bearing set having lubrication path |