| Patents for F04C 27 - Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids (2,516) |
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| 08/30/2000 | CN2394029Y Slide vacuum-pressure composite air pump |
| 08/30/2000 | CN1055988C 涡旋式机械 Scroll machine |
| 08/29/2000 | US6109901 Vane-type rotary compressor having a bypass passage defined in a front cover |
| 08/09/2000 | EP1025403A1 An adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor |
| 08/09/2000 | EP1025341A1 Scroll-type fluid displacement device having flow diverter, multiple tip seal and semi-radial compliant mechanism |
| 08/08/2000 | US6099279 Displacement fluid machine |
| 08/02/2000 | EP1024289A2 Scroll-type compressor |
| 08/01/2000 | US6095780 Device for sealing a rotor shaft and screw-type compressor provided with such a device |
| 08/01/2000 | US6095764 Reverse rotation protection for a scroll compressor using a valve means |
| 07/20/2000 | WO2000042322A1 Screw compressor |
| 07/20/2000 | CA2352742A1 Screw compressor |
| 07/11/2000 | US6086342 Intermediate pressure regulating valve for a scroll machine |
| 07/11/2000 | US6086335 Capacity modulated scroll machine having one or more pin members movably disposed for restricting the radius of the orbiting scroll member |
| 07/04/2000 | US6082132 Apparatus having refrigeration cycle |
| 06/27/2000 | US6079966 Compressor housing |
| 06/20/2000 | US6077057 Scroll compressor with back pressure seal protection during reverse rotation |
| 06/14/2000 | EP1007853A1 Oil-free screw rotor apparatus |
| 06/14/2000 | CN1256743A Improved tip seal for scroll-type vacuum pump |
| 06/13/2000 | US6074187 Compressor |
| 06/13/2000 | US6074185 Scroll compressor with improved tip seal |
| 06/13/2000 | US6074141 Scroll compressor having grooves for seal members |
| 06/06/2000 | US6071101 Scroll-type fluid displacement device having flow diverter, multiple tip seal and semi-radial compliant mechanism |
| 06/06/2000 | US6071099 Scroll compressor having a discharge muffler |
| 05/31/2000 | EP0742869B1 Scroll-type fluid displacement device having high built-in volume ratio and semi-compliant biasing mechanism |
| 05/31/2000 | DE19853240A1 Compressor has support body guided floating relative to housing to prevent canting and ensure elastically centred position |
| 05/31/2000 | CN1254801A Vortex compressor |
| 05/30/2000 | US6068459 Tip seal for scroll-type vacuum pump |
| 05/24/2000 | EP1002953A1 Scroll compressor |
| 05/16/2000 | US6062834 Scroll compressor |
| 05/11/2000 | DE19850753A1 Rotary piston compressor in hypotrochoidal format has driven outer runner and inner runner meshing with it, inner runner being located on stationary eccentric, on axis of which outer runner side plates are located |
| 05/10/2000 | CN2377379Y Liquid seal screw and nipple pump |
| 05/09/2000 | US6059549 High-low pressure chamber sealing arrangement of a volute compressor |
| 05/02/2000 | US6056523 Scroll-type compressor having securing blocks and multiple discharge ports |
| 04/26/2000 | CN1251410A Vortex type fluid discharging apparatus |
| 04/20/2000 | WO2000022302A1 Scroll-type fluid displacement device for vacuum pump application |
| 04/19/2000 | EP0993553A1 Sealing device on a shaft journal of a dry-running helical rotary compressor |
| 04/18/2000 | US6050797 Screw compressor with balanced thrust |
| 04/18/2000 | US6050793 Scroll type fluid displacement machine |
| 04/12/2000 | EP0992691A1 Scroll compressor |
| 04/11/2000 | US6048184 Back-pressure sealing system for revolving compressor |
| 04/11/2000 | US6047557 Adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor |
| 04/06/2000 | DE19947132A1 Spiral fluid displacement pump/compressor has sealing groove with sealing element between housing and spiral element |
| 04/01/2000 | CA2284425A1 Scroll-type fluid displacement apparatus |
| 03/29/2000 | CN1248688A Heat pump device |
| 03/21/2000 | US6039549 Volute compressor |
| 03/16/2000 | DE3745097C2 Hermetisch gekapselte Motor-Kompressor-Einheit Hermetically sealed motor-compressor unit |
| 03/16/2000 | DE3745096C2 Rotationskolbenmaschine nach dem Spiralprinzip Rotary piston machine according to the spiral principle |
| 03/15/2000 | EP0721545B1 Scroll apparatus with enhanced lubrication |
| 03/09/2000 | WO2000012900A1 Dry compressing screw pump |
| 03/09/2000 | WO2000012899A1 Dry-compressing screw pump |
| 03/09/2000 | CA2327080A1 Dry-compressing screw pump |
| 03/08/2000 | CN2367799Y Piston type cold-accumulation sealing structure for piston-type low-temp. refrigerator |
| 03/07/2000 | US6033194 Scroll-type fluid displacement apparatus with anti-wear plate mechanism |
| 03/02/2000 | DE19839501A1 Trockenverdichtende Schraubenspindelpumpe Dry-compressing screw pump |
| 02/29/2000 | US6030192 Scroll compressor having bearing structure in the orbiting scroll to eliminate tipping forces |
| 02/22/2000 | US6027321 Scroll-type compressor having an axially displaceable scroll plate |
| 02/22/2000 | US6027317 Scroll type machine |
| 02/10/2000 | WO2000006906A1 Scroll-type vacuum pump |
| 02/09/2000 | EP0978631A1 Steam-driven propeller engine |
| 02/02/2000 | EP0975873A1 Improved tip seal for scroll-type vacuum pump |
| 02/02/2000 | CN2361883Y Combined grease seal device for turbosupercharger |
| 01/26/2000 | CN2360638Y Turbo disk sealing device of automobile air conditioning compressor |
| 01/26/2000 | CN1242479A Scroll compressor with lubrication of seals in back pressure chamber |
| 01/25/2000 | US6017204 Spiral compressor, useful in particular to generate compressed air for rail vehicles |
| 01/25/2000 | US6017203 Scroll compressor having separation plate between high and low pressures |
| 01/19/2000 | EP0972943A2 Scroll compressor with lubrification of seals in back pressure chamber |
| 01/18/2000 | US6015277 Fabrication method for semiconductor substrate |
| 01/18/2000 | CA2134923C Scroll compressor stabilizer ring |
| 12/29/1999 | EP0967392A1 Scroll type compressor in which an oil seal is formed between an involute wall and an end plate confronting with the involute wall in an axial direction |
| 12/29/1999 | EP0966611A1 Pump with shaft seal |
| 12/23/1999 | CA2276787A1 Scroll type compressor in which an oil seal is formed between an involute wall and an end plate confronting with the involute wall in an axial direction |
| 12/22/1999 | EP0965759A1 Scroll compressor with improved sealing between scroll members |
| 12/01/1999 | CN1046990C Rotative fluid equipment |
| 11/25/1999 | DE19822283A1 Drehzahnverdichter und Verfahren zum Betrieb eines solchen Rotating gear compressor and method of operating such a |
| 11/24/1999 | EP0959251A1 Rotary gear compressor and method for its operation |
| 11/24/1999 | EP0959250A2 Screw compressor with balanced thrust |
| 11/24/1999 | CN1236064A Screw compressor with balanced thrust |
| 11/23/1999 | US5989000 Scroll compressor with back pressure hole relief |
| 11/23/1999 | US5987894 Temperature lowering apparatus using cryogenic expansion with the aid of spirals |
| 11/11/1999 | WO1999057440A1 Sealing device on a shaft journal of a dry-running helical rotary compressor |
| 11/04/1999 | DE19806346A1 Cooling and shaft sealing device for compressor |
| 10/05/1999 | US5961306 Rotating scroll compressor having main and auxiliary rotating shaft portions |
| 09/30/1999 | DE19812819A1 Screw compressor with mechanical slide ring shaft seal |
| 09/22/1999 | EP0943806A1 Displacement type fluid machine |
| 09/15/1999 | EP0942172A1 Vacuum pump with multiple driven shafts |
| 09/14/1999 | US5951272 Scroll compressor having an annular seal for a stationary scroll pressure receiving surface |
| 09/14/1999 | US5951271 Stabilization ring and seal clearance for a scroll compressor |
| 09/07/1999 | US5947694 Scroll-type vacuum pumping apparatus |
| 09/01/1999 | EP0939227A1 Scroll-type fluid machine in which a movable scroll member is elastically urged towards a fixed scroll member |
| 08/26/1999 | WO1999042729A1 Vacuum pump |
| 08/26/1999 | WO1999042728A1 Improved tip seal for scroll-type vacuum pump |
| 08/18/1999 | EP0936422A2 Apparatus having refrigeration cycle |
| 08/03/1999 | US5931649 Motor compressor |
| 07/27/1999 | US5927958 Fluid machinery having a sealing member between stepped spirals |
| 07/07/1999 | CN2327811Y Pump for sealed holes in mines |
| 06/24/1999 | WO1999009205A8 Diagnosis of clear cell type renal carcinoma |
| 06/17/1999 | WO1999015764A8 Scroll-type fluid displacement device having flow diverter, multiple tip seal and semi-radial compliant mechanism |
| 06/09/1999 | EP0920590A1 Dry vacuum machine with shaft passage |
| 06/09/1999 | CN1218879A Translational multipurpose liquid pump |
| 06/02/1999 | CN1218144A Compressor |