| Patents for F04C 27 - Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids (2,516) |
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| 09/02/2004 | WO2004074687A2 Vacuum pump with a plastic blade |
| 09/02/2004 | US20040170512 Compressor |
| 09/02/2004 | DE4429911B4 Spiralkompressor Scroll compressor |
| 09/02/2004 | DE10306547A1 Drehkolbenmaschine Rotary engine |
| 09/02/2004 | DE102004003567A1 Vakuumpumpe mit Schieber Vacuum pump with slide |
| 08/31/2004 | US6783338 Scroll type compressor having tip seals and a scroll coating layer |
| 08/26/2004 | WO2004072483A1 A scroll pump and method of assembling same |
| 08/26/2004 | US20040166007 Scroll compressor |
| 08/25/2004 | CN1163670C Volumetric liquid machinery |
| 08/18/2004 | EP1447566A1 Rotary-piston machine with rotary coalescing filter |
| 08/12/2004 | US20040156734 Scroll compressor |
| 08/05/2004 | US20040151610 Fluid machinery |
| 08/04/2004 | EP1025341A4 Scroll-type fluid displacement device having flow diverter, multiple tip seal and semi-radial compliant mechanism |
| 08/04/2004 | CN1517553A Power regulation vortex machine |
| 08/03/2004 | US6769888 Scroll compressor having a valved back pressure chamber and a bypass for overcompression |
| 08/03/2004 | US6769887 Scroll compressor |
| 08/03/2004 | US6769351 Radial piston pump |
| 08/03/2004 | US6769264 Control system of degree of superheat of air conditioner and control method thereof |
| 07/28/2004 | CN1515799A 流体机械 Fluid Machinery |
| 07/28/2004 | CN1159529C Scrawl compressor |
| 07/22/2004 | WO2004061310A1 Coated end wall of a compressor chamber and method of manufacture thereof |
| 07/22/2004 | US20040141864 Non-circular centered seal for back pressure chamber |
| 07/21/2004 | CN1158461C Scroll compressor with lubrication of seals in back pressure chamber |
| 07/15/2004 | US20040136855 Scroll type compressor |
| 07/15/2004 | US20040136854 Scroll compressor |
| 07/14/2004 | EP1332289B1 Rotor shaft sealing |
| 07/14/2004 | EP1129294A4 Scroll-type fluid displacement device for vacuum pump application |
| 07/13/2004 | US6761545 Scroll compressor with flow restriction and back pressure chamber tap |
| 07/07/2004 | CN1510273A Vortex machine |
| 07/06/2004 | US6758659 Scroll type fluid displacement apparatus with fully compliant floating scrolls |
| 07/01/2004 | US20040126260 Scroll compressor with flow restriction and back pressure chamber tap |
| 07/01/2004 | US20040126246 Load-regulating device for scroll type compressors |
| 07/01/2004 | US20040123612 Cooling system with variable duty cycle capacity control |
| 06/30/2004 | EP1433957A1 Scroll compressor |
| 06/30/2004 | EP1433956A1 Scroll compressor |
| 06/30/2004 | CN1509379A 旋转式压缩机 Rotary compressor |
| 06/23/2004 | CN1507541A 涡旋压缩机 Scroll Compressor |
| 06/23/2004 | CN1506584A Power modulating vortex machine |
| 06/16/2004 | EP1428978A1 Rotary fluid machine |
| 06/16/2004 | EP0993553B1 Sealing device on a shaft journal of a dry-running helical rotary compressor |
| 06/16/2004 | EP0966611B1 Pump with shaft seal |
| 06/15/2004 | US6749404 Scroll compressors |
| 06/09/2004 | EP0975873B1 Improved tip seal for scroll-type vacuum pump |
| 06/08/2004 | US6745584 Digital scroll condensing unit controller |
| 06/03/2004 | US20040105770 Scroll fluid machine |
| 05/25/2004 | US6739851 Coated end wall and method of manufacture |
| 05/19/2004 | EP1163452B1 Rotary helical screw-type compressor |
| 05/18/2004 | US6736620 Scroll-type fluid machine having at least one inlet or outlet of a plurality able to be closed by a closure member |
| 05/12/2004 | CN1496447A Water-injected screw compressor |
| 05/12/2004 | CN1149337C 压缩机 Compressor |
| 05/06/2004 | US20040086396 Water-injected screw compressor |
| 05/06/2004 | EP1415093A1 Compressor |
| 05/06/2004 | DE10249749A1 Sealing ring for sealing of pressurized chambers has two sealing sections provided on respective sealing elements which lie one upon other and at least over section of axial length have no rigid interconnection |
| 04/29/2004 | WO2004036046A1 Vane type vacuum pump |
| 04/29/2004 | US20040081562 Dual volume-ratio scroll machine |
| 04/28/2004 | EP1413759A2 Scroll type compressor |
| 04/22/2004 | WO2004033931A1 Powder-metallurgically produced piston body comprising support webs and method for the production thereof |
| 04/22/2004 | WO2004033917A1 Rotary compressor |
| 04/22/2004 | WO2004033915A1 Rotary compressor |
| 04/22/2004 | DE10197228T5 Gekapselter mechanischer Booster Sealed mechanical booster |
| 04/15/2004 | US20040071571 Scroll compressor |
| 04/14/2004 | CN1489673A 涡旋压缩机 Scroll Compressor |
| 04/13/2004 | US6720071 Discharging pressure; molding into coils; blend of polyether ketone polymer, carbon fibers and polytetrafluoroethylene |
| 04/13/2004 | US6719545 Scroll compressor having a back pressure chamber in a rotation preventing mechanism |
| 04/08/2004 | US20040067144 Scroll compressor |
| 04/08/2004 | DE10245404A1 Piston body for piston-cylinder-units, esp. shock absorber piston has sintered powder-metallurgic body with integrated projecting and support webs |
| 04/07/2004 | CN1487202A Leaking oil proof sturctrue for vacuum pump |
| 04/07/2004 | CN1487201A Anti-leakaging oil structure for vacuum pump |
| 04/01/2004 | US20040062671 Scroll fluid machine |
| 04/01/2004 | US20040062670 Scroll compressor |
| 03/25/2004 | US20040056423 Rotor shaft sealing |
| 03/25/2004 | DE10341104A1 Sealing system for spiral compressor has a ring seal on the back of the spiral support disc supported on an intermediate inner wall and containing a pressure space between the seal and a shaft seal |
| 03/23/2004 | US6709244 Diagnostic system for a compressor |
| 03/18/2004 | WO2004022974A1 Seal-leak detector arrangement for compressors and other equipment |
| 03/18/2004 | CA2494955A1 Seal-leak detector arrangement for compressors and other equipment |
| 03/17/2004 | EP1397595A1 Liquid seal pump of the helical screw type |
| 03/17/2004 | EP0978631A4 Steam-driven propeller engine |
| 03/11/2004 | US20040048131 Seal-leak detector arrangement for compressors and other equipment |
| 03/10/2004 | CN1481471A Fluid power transfer device |
| 03/04/2004 | US20040042911 Apparatus for changing capacity of scroll compressor |
| 03/03/2004 | CN1479014A Displacement changing device of vortex compressor |
| 03/02/2004 | US6699023 Multi-stage vacuum pump |
| 02/25/2004 | CN1477311A Axle sealing structure for vacuum pump |
| 02/25/2004 | CN1477310A Axle sealing structure for vacuum pump |
| 02/25/2004 | CN1139727C Power modulated scroll machine |
| 02/24/2004 | US6695599 Scroll compressor |
| 02/24/2004 | US6695597 Scroll fluid machine |
| 02/19/2004 | DE3745098B4 Kompressor der Spiralbauart Scroll type compressor |
| 02/18/2004 | CN1475673A Turbo machine having dual volume ratio |
| 02/10/2004 | US6688867 Rotary blower with an abradable coating |
| 02/10/2004 | US6688864 Oil leak prevention structure of vacuum pump |
| 02/10/2004 | US6688863 Oil leak prevention structure of vacuum pump |
| 02/05/2004 | WO2004011808A1 Compressor |
| 02/04/2004 | EP1387132A1 Apparatus having refrigeration cycle |
| 02/04/2004 | EP1387131A1 Apparatus having refrigeration cycle |
| 01/27/2004 | US6682328 Multi-stage scroll fluid machine having a seal element between compression sections |
| 01/21/2004 | EP1382854A2 Dual volume-ratio scroll machine |
| 01/21/2004 | CN1135299C Screw compressor with balanced thrust |
| 01/20/2004 | US6679683 Dual volume-ratio scroll machine |
| 01/20/2004 | US6679072 Diagnostic system and method for a cooling system |