| Patents for F04C 27 - Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids (2,516) |
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| 12/04/2001 | US6325602 Automotive vacuum pump |
| 12/04/2001 | US6325380 Face seal assembly |
| 12/04/2001 | CA2243744C Intermediate pressure regulating valve for a scroll machine |
| 12/04/2001 | CA2172396C Scroll apparatus with enhanced lubrication |
| 12/01/2001 | CA2325752A1 Oiless rotary scroll air compressor tipseal assembly |
| 11/29/2001 | US20010045097 Adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor |
| 11/28/2001 | EP1158166A1 Scroll type compressor |
| 11/27/2001 | US6322340 Scroll compressor having a divided orbiting scroll end plate |
| 11/21/2001 | CN1075170C 涡旋流体机械 The scroll fluid machine |
| 11/20/2001 | US6318982 Scroll-type compressor |
| 11/14/2001 | CN1074817C Isolation sleeve for magnetic pump and its producing technology |
| 11/08/2001 | US20010038800 Scroll fluid machine |
| 11/07/2001 | CN1074510C Scroll compressor and method of manufacturing same |
| 11/06/2001 | CA2247690C Compressor |
| 11/01/2001 | WO2001081766A1 Screw-type vacuum pump |
| 10/30/2001 | US6309197 Scroll compressor with axially floating non-orbiting scroll and no separator plate |
| 10/25/2001 | DE10019637A1 Screw-type vacuum pump has at least two adjacent chambers directly interconnected by check valve with throughflow direction towards pressure side and formed by continuous valve passage |
| 10/16/2001 | US6302667 Oil-free screw rotor apparatus |
| 10/16/2001 | US6301912 Heat pump apparatus |
| 10/10/2001 | EP1141552A1 Screw compressor |
| 10/09/2001 | US6299417 Back pressure structure of intermediate pressure of scroll compressor |
| 10/02/2001 | CA2232781C Stabilization ring and seal clearance for a scroll compressor |
| 09/25/2001 | US6293767 Scroll machine with asymmetrical bleed hole |
| 09/20/2001 | WO2001069087A1 2-cylinder, 2-stage compression type rotary compressor |
| 09/19/2001 | CN2448954Y Magnetic fluid seal gearing device for ultrasmall diameter gearing axle of vacuum equipment |
| 09/19/2001 | CN1071418C Scroll machine with reverse rotation protection |
| 09/19/2001 | CN1071417C Cyclone fluid machinery |
| 09/18/2001 | US6290480 Screw machine |
| 09/18/2001 | US6290478 Eccentric back chamber seals for scroll compressor |
| 09/12/2001 | EP1132573A2 Scroll fluid machine |
| 09/11/2001 | US6287100 Sealing device on a shaft journal of a dry-running helical rotary compressor |
| 09/11/2001 | US6287097 Scroll compressor having discharge port formed only in end plate of fixed scroll, and discharge valve attached to the end plate |
| 09/05/2001 | EP1129294A1 Scroll-type fluid displacement device for vacuum pump application |
| 09/04/2001 | US6283739 Steam-driven propeller engine |
| 08/29/2001 | CN1070267C Vortex-type compressor |
| 08/29/2001 | CN1070266C Scroll type fluid machine |
| 08/07/2001 | US6270713 Injection molding polyether ketone polymer |
| 08/07/2001 | CA2063734C Scroll compressor |
| 08/02/2001 | US20010010800 Displacement type fluid machine |
| 07/24/2001 | US6264448 Open type compressor |
| 07/11/2001 | EP0904494B1 Scroll-type vacuum pumping apparatus |
| 07/10/2001 | US6257854 Double screw rotor assembly having means to automatically adjust the clearance by pressure difference |
| 07/10/2001 | US6257852 Balancing structure of axial submission device for scroll compressor |
| 07/04/2001 | EP1113176A2 Vacuum pump with a shaft seal |
| 06/28/2001 | DE19963170A1 Vakuumpumpe mit Wellendichtmitteln Vacuum pump with shaft sealing means |
| 06/27/2001 | EP1111187A2 Screw machine |
| 06/27/2001 | CN1300904A Screw rod mechanism |
| 06/27/2001 | CN1067753C Double-loop spiral-slot end sealing |
| 06/20/2001 | EP1108143A1 Dry-compressing screw pump |
| 06/14/2001 | WO2001042658A1 Scroll type compressor |
| 06/12/2001 | US6244841 Vacuum pumps |
| 06/05/2001 | US6241490 Multirotor vacuum pump |
| 05/31/2001 | WO2001038740A1 Scroll type compressor |
| 05/31/2001 | US20010002239 Adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor |
| 05/24/2001 | US20010001639 Scroll vacuum pump with improved performance |
| 05/09/2001 | CN1065595C 涡旋式压缩机 Scroll compressor |
| 05/08/2001 | US6227831 Compressor having an inclined surface to guide lubricant oil |
| 05/08/2001 | US6227827 Scroll compressor and its sealing method |
| 05/01/2001 | US6224059 Controlled contact pressure for scroll compressor seal |
| 04/17/2001 | US6217303 Displacement fluid machine |
| 04/17/2001 | US6217302 Floating seal bias for reverse fun protection in scroll compressor |
| 04/11/2001 | CN1064438C New sealing structure of roots blower |
| 04/10/2001 | US6213743 Displacement type fluid machine |
| 04/10/2001 | US6213731 Compressor pulse width modulation |
| 03/28/2001 | EP1087142A2 Scroll compressor capacity control |
| 03/28/2001 | EP1087141A2 Scroll-type compressor |
| 03/28/2001 | CN1289011A Pulse-width modulation of compressor |
| 03/23/2001 | CA2320461A1 Automotive vacuum pump |
| 03/20/2001 | US6203299 Capacity modulation for scroll compressors |
| 02/27/2001 | US6193487 Scroll-type fluid displacement device for vacuum pump application |
| 02/07/2001 | CN1061747C 浮动机械密封装置 Floating mechanical seals |
| 01/16/2001 | US6174150 Scroll compressor |
| 01/09/2001 | US6171088 Scroll compressor with slanted back pressure seal |
| 01/03/2001 | CN1278889A Scroll-type fluid displacement device having flow diverter, multiple tip seal and semi-radial compliant mechanism |
| 01/02/2001 | US6168404 Scroll compressor having axial compliance valve |
| 12/13/2000 | EP1059453A1 Scroll compressor |
| 12/13/2000 | EP1059450A2 Scroll compressor |
| 12/13/2000 | EP1059448A2 Scroll compressor |
| 12/13/2000 | EP1059447A1 Scroll compressor |
| 12/13/2000 | CN1276488A Open compressor |
| 12/13/2000 | CN1276484A Swirl compressor |
| 12/13/2000 | CN1276481A Swirl compressor capable of introducing high-pressure fluid into thrust face |
| 12/13/2000 | CN1276480A Swirl compressor with discharge port and discharge valve on fixed swirl end plate |
| 12/12/2000 | US6158991 Scroll-type fluid machine in which a movable scroll member is elastically urged towards a fixed scroll member |
| 11/29/2000 | EP1055824A1 Scroll-type apparatus |
| 11/22/2000 | EP1054196A2 Mechanical seal arrangement |
| 11/21/2000 | US6149413 Scroll compressor with lubrication of seals in back pressure chamber |
| 11/14/2000 | US6146119 Pressure actuated seal |
| 11/07/2000 | US6142755 Scroll compressor and method of manufacturing same |
| 11/01/2000 | CN1272171A Adaptive control for refrigeration system using pulse width modulated duty cycle scroll compressor |
| 10/24/2000 | US6135739 Scroll compressor |
| 10/03/2000 | US6126423 Preloaded spring mount for crank pin/rotor bearing assembly |
| 10/03/2000 | US6126422 Tip seal for scroll type compressor and manufacturing method therefor |
| 10/03/2000 | US6126421 Scroll type compressor in which a sealing is improved between scroll members |
| 09/14/2000 | WO2000053932A1 Rotary helical screw-type compressor |
| 09/14/2000 | WO2000053931A1 Rotary helical screw-type compressor |
| 09/12/2000 | US6116879 Fluid machine |
| 09/12/2000 | US6116867 Scroll machine with capacity modulation |
| 09/06/2000 | CN1056215C Sectional front-end sealing device for volume type vortex fluid compression device |
| 09/05/2000 | US6113373 Scroll compressor having an annular seal for a stationary scroll pressure receiving surface |