| Patents for F03C 4 - Oscillating-piston engines (772) |
|---|
| 07/14/2010 | CN101778999A Screw compressor with integral bearing cover and discharge plenum divider |
| 07/13/2010 | US7753665 Screw compressor for working pressures above 80 bar |
| 07/13/2010 | US7753664 Rotary pump |
| 07/06/2010 | US7748968 Two-cylinder rotary compressor with suction pipes |
| 06/29/2010 | US7744356 Screw vacuum pump with male and female screw rotors having unequal leads |
| 06/15/2010 | US7736138 Compressor with continuously inclined surface |
| 06/15/2010 | US7736135 Structure for controlling lubricant's flow rate in scroll compressor |
| 06/01/2010 | US7726960 Twin-plate rotary compressor |
| 06/01/2010 | US7726958 Hydraulic machine |
| 05/25/2010 | US7722344 Impeller-drive shaft construction for a fuel pump |
| 05/18/2010 | US7717689 Rotor apparatus of pump including a drive shaft with a plurality of arcuate circumferential surface sections |
| 05/18/2010 | US7717687 Scroll compressor with compliant retainer |
| 05/11/2010 | US7713039 Helical screw compressor having a vented sealing arrangement |
| 04/20/2010 | US7699589 Scroll type fluid machine having a circulation path and inlet path for guiding refrigerant from a discharge chamber to a drive casing and to a rear-side of movable scroll |
| 04/13/2010 | US7695262 Pump having toothing on the rotary and drive shaft |
| 04/13/2010 | US7695261 Floating dam positive displacement pump |
| 04/13/2010 | US7695259 Rotary fluid pressure device with modular multi-speed control mechanism |
| 03/30/2010 | US7686599 Scroll compressor with device to limit orbit radius |
| 03/23/2010 | US7682139 Motor and method of operating the same |
| 03/09/2010 | US7674101 Sliding vane of rotors |
| 03/09/2010 | US7674098 Scroll compressor with vapor injection and unloader port |
| 03/02/2010 | US7670122 Gerotor pump |
| 02/16/2010 | US7661940 Rotor eccentrically installed in a cylinder of a rotary engine or compressor |
| 01/12/2010 | US7644695 Radial axis, spherical based rotary machines |
| 01/05/2010 | US7641455 Scroll compressor with reduced oldham ring noise |
| 01/05/2010 | US7641454 Two-stage rotary compressor |
| 12/15/2009 | US7632082 Hermetically sealed compressor and method of manufacturing the same |
| 12/08/2009 | US7628595 Gas vane pump, and method of operating the pump |
| 12/08/2009 | US7628594 Vane pump having a labyrinth seal and gap between a top surface of a rotor and a ceiling surface of a rotor chamber that is formed between upper and lower cases |
| 12/01/2009 | US7625193 Radial axis, spherical based rotary machines |
| 12/01/2009 | US7625191 Rotary displacement machines having rotors of asymmetrical profile |
| 11/24/2009 | US7621729 Multistage compression type rotary compressor |
| 11/10/2009 | US7614861 Rotary fluid-driven motor with sealing elements |
| 11/03/2009 | US7611345 Structure for preventing axial leakage in scroll compressor |
| 11/03/2009 | US7611343 Multistage compression type rotary compressor |
| 11/03/2009 | US7611342 Multistage compression type rotary compressor |
| 10/27/2009 | US7607906 Gear pump arrangement with erosion resistant insert |
| 10/27/2009 | US7607902 Closed compressor and refrigerating cycle apparatus |
| 09/23/2009 | CN100543307C Scroll compressor |
| 09/15/2009 | US7588433 Vane pump |
| 09/15/2009 | US7588426 Oil rotary vacuum pump and manufacturing method thereof |
| 09/08/2009 | US7585164 Backflow preventing apparatus for compressor |
| 09/01/2009 | US7581937 Rotary type compressor having an intermediate pressure on a surface side of its compression member |
| 09/01/2009 | US7581936 Hermetically sealed compressor having oil supply mechanism based on refrigerant pressure |
| 08/04/2009 | US7568898 Compressor sound suppression |
| 07/28/2009 | US7566211 Vane pump having vanes with a cutout portion |
| 07/21/2009 | US7563086 Oscillating piston machine |
| 07/08/2009 | CN100510390C Split impeller-type hydraulic swinging-motor shell and fixed vane connection method |
| 07/07/2009 | US7556484 Compressor having a small-width portion and a large-width portion in an inner circumferential sliding surface of a swinging roller |
| 06/30/2009 | US7553142 Lubrication system for compressor |
| 06/09/2009 | US7544052 Oil pump for an internal combustion engine |
| 06/02/2009 | US7540729 Vane cell pump |
| 05/20/2009 | EP2059672A2 Long life telescoping gear pumps and motors |
| 05/14/2009 | US20090123316 Gear pump |
| 05/05/2009 | US7527485 Rotationally induced variable volume chambers |
| 04/16/2009 | WO2006047241A3 Gerotor apparatus for a quasi-isothermal brayton cycle engine |
| 04/14/2009 | CA2355843C Lever-mechanism motor or pump |
| 04/08/2009 | CN101405476A Sealing system for an oscillating-piston engine |
| 04/07/2009 | US7513761 Double screw compressor for supplying gas |
| 03/31/2009 | US7510382 Apparatus for preventing overheating of scroll compressor |
| 03/25/2009 | CN100472032C Two-lobe rotary machine |
| 03/12/2009 | DE102008009875A1 Stabilizer arrangement, has seam-like welded joint provided between swing motor and stabilizer section, where seam-like welded joint is realized on cross sectional plane, which runs right angle to longitudinal axis of swing motor |
| 03/05/2009 | WO2009028510A1 Rotation torque generation device |
| 03/04/2009 | CN100465486C A sealing device of a radial swivel motor |
| 03/03/2009 | US7497672 Screw pump with increased volume of fluid to be transferred |
| 02/26/2009 | DE202007018703U1 Kreiskolbenmaschine A rotary engine |
| 02/17/2009 | US7491044 Sealing device of fluid machinery |
| 02/17/2009 | US7491042 Multistage compression type rotary compressor |
| 02/10/2009 | US7488166 Rotary volumetric machine |
| 02/10/2009 | US7488165 Compressor having back pressure vane controlled for improving oil distribution |
| 01/27/2009 | US7481635 Shaft seal for rotary type compressor |
| 01/20/2009 | US7479000 Gear pump |
| 01/13/2009 | US7476092 Scroll compressor with tapered slider block |
| 01/06/2009 | US7473084 Oil-cooled screw compressor |
| 12/24/2008 | CN101331326A Pressure medium powered rotary apparatus unit and system |
| 12/24/2008 | CN101331301A Internal combustion engine |
| 12/23/2008 | US7467935 Low input torque rotor for vane pump |
| 12/09/2008 | US7462022 Rotary displacement pump comprising scraper and guide of the scraper |
| 11/12/2008 | EP1989398A1 Sealing system for an oscillating-piston engine |
| 11/04/2008 | US7445437 Scroll type fluid machine having a first scroll wrap unit with a scroll member and a scroll receiving member, and a second scroll wrap unit engaged with the first scroll wrap unit |
| 10/30/2008 | DE112006003398T5 Brennkraftmaschine Internal combustion engine |
| 10/28/2008 | US7441493 Sealing device for a radial swivel motor |
| 10/21/2008 | US7438540 Two-stage rotary compressor |
| 10/01/2008 | CN201125840Y Rotary vane type hydraulic rudder motor |
| 09/23/2008 | US7427192 Toothing of a toothed wheel |
| 09/16/2008 | US7425121 Rotary vane pump |
| 09/11/2008 | DE102006030711B4 Radialer Schwenkmotor Radial oscillating motor |
| 09/04/2008 | WO2008031012A3 Long life telescoping gear pumps and motors |
| 09/02/2008 | US7419370 Scroll compressor having a position adjustment device urging the movable scroll towards the stationary scroll by moving a seal formed between a support and the movable scroll |
| 08/20/2008 | EP1957804A1 Pressure medium powered rotary apparatus unit and system |
| 07/31/2008 | WO2007019018A3 Controlled-clearance sealing compressor devices |
| 07/16/2008 | CN101223363A Gear pump |
| 07/16/2008 | CN100402856C Scroll type hydraulic machine |
| 07/09/2008 | CN100400886C Apparatus for preventing overheating of scroll compressor |
| 07/03/2008 | WO2008079131A1 Screw compressor with integral bearing cover and discharge plenum divider |
| 07/01/2008 | US7393192 Rotary vane pump |
| 07/01/2008 | US7393190 Discharge valve system of scroll compressor |
| 06/11/2008 | CN101198766A Balancing plate-shuttle ball |
| 06/03/2008 | US7381040 Compressor having pressure controlled for improving oil distribution |
| 06/03/2008 | US7381039 Rotary compressor having a stepped cover of a discharge muffler chamber |