Patents
Sitemap › F04 - Positive-displacement machines for liquids; Pumps for liquids or elastic fluids › F04C - Rotary-piston, or oscillating-piston, positive-displacement machines for liquids; Rotary-piston, or oscillating-piston, positive-displacement pumps › F04C 27 - Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
Patents for F04C 27 - Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids (2,516)
01/2004
01/06/2004US6672846 Capacity modulation for plural compressors
01/06/2004US6672101 Electrically driven compressors and methods for circulating lubrication oil through the same
12/2003
12/18/2003WO2003104657A1 Rotary compressor
12/17/2003CN1131378C Swirl compressor capable of introducing high-pressure fluid into thrust face
12/16/2003US6663367 Shaft seal structure of vacuum pumps
12/16/2003US6663365 Scroll type compressor
12/16/2003US6662583 Adaptive control for a cooling system
12/16/2003US6662578 Refrigeration system and method for controlling defrost
12/11/2003WO2003102421A1 Scroll-type compressor
12/11/2003DE10225774C1 Vacuum pump, for condensing and aggressive gases, is a dry pump with a membrane pump stage and a spiral scroll pump stage
12/09/2003US6659747 Shaft seal structure of vacuum pumps
12/09/2003US6659746 Shaft seal structure of vacuum pumps
12/09/2003US6659745 Scroll compressor having different tip clearances for spiral bodies having different heights
12/09/2003US6659227 Oil leak prevention structure for vacuum pump
12/03/2003EP1366297A1 Water-injected screw compressor
11/2003
11/25/2003US6652250 Screw compressor having intermediate shaft bearing
11/05/2003EP1359323A1 Scroll compressor
11/05/2003CN2584881Y Magnetic fluid bearing sealing device for Roots pump
10/2003
10/29/2003EP1357291A2 Rotating scroll compressor
10/28/2003US6637222 System for controlling starting of air conditioner and control method thereof
10/23/2003WO2003087540A1 Scroll type fluid displacement apparatus with fully compliant floating scrolls
10/16/2003US20030194341 Scroll compressor sealing
10/16/2003US20030194340 Scroll type fluid displacement apparatus with fully compliant floating scrolls
10/09/2003WO2003083308A1 Rotary compressor
10/09/2003US20030190247 Scroll compressor
10/08/2003CN1447029A Swirl compressor
09/2003
09/17/2003EP1344005A2 Compressor
09/17/2003CN1121556C Screw rod mechanism
09/16/2003US6619430 Refrigerant gas buffered seal system
09/12/2003WO2003074879A1 Scroll compressor
09/10/2003CN1441167A Vortex type compressor
09/10/2003CN1120962C Control system for starting of air conditioner and control method thereof
09/09/2003US6616428 Double-cylinder two-stage compression rotary compressor
09/03/2003EP1108143B1 Dry-compressing screw pump
09/03/2003CN1120335C System for controlling starting of air conditioner and control method thereof
09/03/2003CN1120301C Terminal sealing device for vortex vacuum pump and vortex vacuum pump therewith
09/02/2003US6612820 Screw compressor having sealed low and high pressure bearing chambers
08/2003
08/28/2003WO2003071134A1 Vacuum pump
08/28/2003US20030161747 Scroll-type fluid machine
08/27/2003CN1119530C Pressure biased co-rotationalscroll apparatus with enhanced lubrication system
08/21/2003US20030156961 Scroll compressor having a back pressure chamber in a rotation preventing mechanism
08/20/2003EP1007853B1 Oil-free screw rotor apparatus
08/19/2003US6607367 Scroll type compressor
08/13/2003EP1334265A1 Fluid power transfer device
08/13/2003CN1117927C Scroll compressor
08/12/2003US6604923 End seal features for scroll compressors
08/06/2003EP1332289A1 Rotor shaft sealing
08/06/2003CN1117209C Scroll-type fluid displacement devicehaving flow diverter, multiple tip seal and semi-radical compliant mechanism
08/05/2003US6601397 Digital scroll condensing unit controller
07/2003
07/23/2003CN1115483C Scroll compressor
07/17/2003US20030133817 Multi-stage vacuum pump
07/16/2003CN1114761C Scroll type compessor
07/15/2003US6592345 Scroll compressor
07/09/2003CN1114044C 螺旋压缩机 Screw compressors
07/08/2003US6589035 Scroll compressor having a valved back-pressure chamber and a bypass for over-compression
07/01/2003US6585501 Scroll compressor sealing
06/2003
06/19/2003US20030110937 Radial piston pump
06/03/2003US6572354 Screw compressor having a shaft seal near a bearing
06/03/2003US6572351 Pressure seal for a vacuum pump
05/2003
05/28/2003CN1420967A 压缩机 Compressor
05/28/2003CN1420965A Scroll compressor
05/27/2003US6568928 Scroll-type compressor
05/22/2003US20030094004 Adaptive control for a cooling system
05/21/2003EP1311763A1 Pressure seal for a vacuum pump
05/21/2003CN1109198C Vortex type machine
05/20/2003US6565340 Compressor having a seal member for supporting a shaft during assembly
05/15/2003US20030089119 Diagnostic system and method for a cooling system
05/14/2003EP1309799A1 Screw-type compressor
05/14/2003CN1108455C Enclosed compressor
05/13/2003US6561776 Scroll compressor
05/08/2003US20030086804 Rotary blower with an abradable coating
05/08/2003US20030084672 Refrigeration system and method for controlling defrost
05/07/2003EP1308626A1 Liquid ring pump
05/01/2003WO2003036089A1 Enclosed mechanical booster
04/2003
04/29/2003US6554594 Shaft seal structure for vacuum pump
04/29/2003US6554592 Scroll compressor with condition responsive back pressure chamber valve
04/24/2003US20030077194 Scroll compressor
04/24/2003US20030074910 System for controlling starting of air conditioner and control method thereof
04/23/2003EP1304484A2 Vacuum pump
04/22/2003US6551081 Scroll-type compressor for a fuel cell with an obstruction member around a drive shaft
04/17/2003US20030072663 Scroll compressor with condition responsive back pressure chamber valve
04/17/2003US20030072651 Method and apparatus for controlling vacuum pump to stop
04/17/2003US20030070878 Refrigerant gas buffered seal system
04/17/2003US20030070441 Control system of degree of superheat of air conditioner and control method thereof
04/15/2003US6547543 Scroll compressor with unique mounting of non-orbiting scroll
04/10/2003US20030068246 Compressor
04/09/2003EP1300593A2 Vane compressor
04/09/2003EP1300592A2 Rotary blower with an abradable coating
04/09/2003CN1409013A 气体压缩机 Gas compressor
04/09/2003CN1409012A 气体压缩机 Gas compressor
04/08/2003US6544014 Scroll-type compressors
04/03/2003WO2003027440A1 Rotary fluid machine
04/03/2003US20030063991 Gas compresssor
04/03/2003US20030063990 Scroll fluid machine
04/03/2003US20030063989 End seal features for scroll compressors
04/03/2003US20030063982 Diagnostic system for a compressor
04/03/2003US20030062020 Balanced rotary internal combustion engine or cycling volume machine
04/02/2003CN1104564C Vortex compressor
03/2003
03/25/2003US6537044 Scroll compressor sealing unit structure
03/19/2003EP1293674A1 Scrawl compressor
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