| Patents for F04C 27 - Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids (2,516) |
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| 04/26/1994 | US5306126 Scroll compressor lubrication control |
| 04/14/1994 | WO1994008139A1 Hydraulic pump/motor |
| 03/22/1994 | US5295813 Scroll-compressor having flat driving surfaces |
| 03/22/1994 | US5295798 Fluid rotating apparatus with rotor communicating path |
| 03/10/1994 | DE4229017A1 Liquid ring compressor in engine block - has pair of oppositely placed channels connected to shaft seal cavity |
| 03/02/1994 | EP0584466A2 Scroll compressor lubrication control |
| 01/19/1994 | EP0579374A1 Scroll compressor with liquid injection |
| 01/19/1994 | CN2153657Y Mechanical sealing for single end face static pump |
| 01/11/1994 | US5277563 Scroll compressor with axial sealing apparatus |
| 01/11/1994 | CA1326005C Rotating scroll apparatus with axially biased scroll members |
| 12/22/1993 | EP0574442A1 Device for supplying a multi-stage dry-running vacuum pump with inert gas. |
| 11/25/1993 | DE4316770A1 Seal configuration for spiral compressor - has significantly enlarged initial sections on spiral elements and spiral seals |
| 11/23/1993 | US5263822 Scroll compressor with lubrication passages to the main bearing, revolving bearing, back-pressure chamber and compression chambers |
| 11/18/1993 | EP0569455A1 Dry-running twin-shaft vacuum pump. |
| 11/02/1993 | US5257920 Scroll type compressor having a centered opening to a high pressure chamber |
| 11/02/1993 | CA1323865C Axial sealing mechanism for a scroll type compressor |
| 10/26/1993 | US5256044 Scroll compressor with improved axial compliance |
| 10/12/1993 | US5252046 Self-sealing scroll compressor |
| 10/12/1993 | CA2054997C Co-rotational scroll apparatus with improved scroll member biasing |
| 09/07/1993 | US5242284 Scroll compressor having limited axial movement between rotating scroll members |
| 09/02/1993 | WO1993017220A1 Tip seal supporting structure for a scroll fluid device |
| 08/10/1993 | CA1321177C Sealing and dynamic operation of a liquid ring pump |
| 08/03/1993 | US5232355 Scroll-type fluid apparatus having a labyrinth and oil seals surrounding a scroll shaft |
| 06/29/1993 | US5222882 Tip seal supporting structure for a scroll fluid device |
| 06/15/1993 | US5219281 Fluid compressor with liquid separating baffle overlying the inlet port |
| 06/08/1993 | US5217360 Scroll compressor with swirling impeller biased by cooled lubricant |
| 05/19/1993 | EP0541801A1 Rotary compressor |
| 03/31/1993 | EP0534891A1 Scroll compressor with dual pocket axial compliance |
| 03/30/1993 | US5197868 Scroll-type machine having a lubricated drive bushing |
| 03/09/1993 | US5192202 Scroll-type compressor with an apparatus for restraining compressed fluid from being leaked |
| 12/30/1992 | EP0520487A1 Scroll-type fluid machinery |
| 12/22/1992 | CA1311730C Scroll apparatus with pressure regulation |
| 12/22/1992 | CA1311729C Scroll machine with plural pressurized seal enhancing chambers and static vane mounts |
| 12/15/1992 | CA1311455C Axial sealing mechanism for a scroll compressor |
| 12/09/1992 | EP0517277A1 Liquid ring gas pump with overhanging impeller |
| 12/01/1992 | WO1992021881A1 Rotary compressor |
| 12/01/1992 | US5167494 Scroll type compressor with axially supported movable scroll |
| 11/10/1992 | US5161961 Gear pump with counterbalanced radial forces and two piece radial seals |
| 11/03/1992 | US5160253 Scroll type fluid apparatus having sealing member in recess forming suction space |
| 10/28/1992 | EP0510782A1 Scroll type compressor |
| 10/21/1992 | EP0509951A1 Magnetically actuated seal for scroll compressor |
| 10/20/1992 | US5156539 Scroll machine with floating seal |
| 10/06/1992 | CA1308403C Scroll type compressor |
| 10/01/1992 | DE4208597A1 Spiral displacement machine or loader with spiral blades on eccentrically circulating displacer - forms with housing spiral blades spirally-shaped all-around work chambers, axially sealed by sealing fillets inserted in grooves |
| 09/30/1992 | EP0505795A1 Scroll compressor including compliance mechanism for the orbiting scroll member |
| 09/17/1992 | WO1992015786A1 Device for supplying a multi-stage dry-running vacuum pump with inert gas |
| 09/08/1992 | US5145345 Magnetically actuated seal for scroll compressor |
| 08/20/1992 | WO1992014060A1 Dry-running twin-shaft vacuum pump |
| 08/20/1992 | WO1992014059A1 Dry-running vacuum pump |
| 08/12/1992 | EP0498165A1 Scroll compressor |
| 08/12/1992 | EP0497995A1 Dry running vacuum pump |
| 07/30/1992 | DE4201486A1 Oil-free screw compressor installation - has turbo supercharger which raises atmospheric air pressure prior to compressor entry |
| 07/30/1992 | DE4200556A1 Seal for displacement machine axial gap - has sealing strips with removed material portions for increased resilience |
| 07/23/1992 | DE4200530A1 Seal device for displacement pump for compressible fluids - has seal with elastic corrugations parallel to packing and curved across groove direction |
| 07/21/1992 | US5131828 Scroll compressor including compliance mechanism for the orbiting scroll member |
| 07/14/1992 | US5129798 Co-rotational scroll apparatus with improved scroll member biasing |
| 07/09/1992 | DE4142589A1 Spiral displacement machine - has sealing elements, which are part profiled along grooves |
| 07/01/1992 | EP0492759A2 Non-orbiting scroll mounting arrangements for a scroll machine |
| 06/23/1992 | US5124397 Resin composition for sliding movement and sealing member comprising same |
| 06/16/1992 | US5122041 Scroll type fluid displacement apparatus having an axially movable seal plate |
| 05/26/1992 | US5116208 Seal rings for the roller on a rotary compressor |
| 05/19/1992 | US5115157 Liquid sealed vane oscillators |
| 05/19/1992 | US5114322 Scroll-type machine having an inlet port baffle |
| 05/19/1992 | US5114310 Centrifugal pump with sealing means |
| 04/29/1992 | EP0482209A1 Scroll compressor |
| 04/29/1992 | CN1060699A Scroll machine with floating seal |
| 04/22/1992 | EP0481598A2 Centrifugal pump with sealing means |
| 04/08/1992 | EP0479421A1 Scroll machine with floating seal |
| 04/07/1992 | US5102316 Non-orbiting scroll mounting arrangements for a scroll machine |
| 04/01/1992 | EP0478269A1 Scroll compressor with axially compliant scroll |
| 03/10/1992 | US5094592 Variable capacity vane compressor having a seal protective structure |
| 02/18/1992 | US5088906 Axially floating scroll member assembly |
| 02/04/1992 | US5085565 Axially compliant scroll with rotating pressure chambers |
| 01/29/1992 | EP0468238A1 Scroll type compressor with variable displacement mechanism |
| 01/21/1992 | US5082432 Axial sealing mechanism for a scroll type compressor |
| 12/31/1991 | US5076771 Scroll type fluid compressor with lubricated spiral seal member |
| 12/03/1991 | US5069605 Scroll fluid machine having a sealing member radially inwardly of a thrust bearing |
| 11/28/1991 | WO1991018207A1 Scroll compressor |
| 11/07/1991 | CA2016172A1 Self-machining seal ring leakage prevention assembly for rotary vane device |
| 11/05/1991 | US5062777 Pump seal arrangement accessible from the base plate |
| 09/24/1991 | CA1289479C Vacuum pump equipped with filter for the lubricating oil |
| 09/17/1991 | US5049043 Variable capacity vane compressor |
| 09/11/1991 | EP0445584A1 Planetary gear pump or motor and process for radial force compensation |
| 09/10/1991 | US5046932 Rotary epitrochoidal compressor |
| 09/04/1991 | CN1054297A Balanced planetary gear pump |
| 08/20/1991 | US5040956 Magnetically actuated seal for scroll compressor |
| 08/06/1991 | US5037281 Tip seal for scroll compressor |
| 07/30/1991 | US5035589 Method and apparatus for reducing scroll compressor tip leakage |
| 07/24/1991 | EP0438025A2 Method and apparatus for reducing scroll compressor tip leakage |
| 07/17/1991 | EP0437165A2 Tip seal for scroll compressor |
| 06/26/1991 | EP0434597A1 Magnetically actuated seal for scroll compressor |
| 06/11/1991 | US5022836 Sealing device for oil rotary vacuum pump |
| 05/21/1991 | US5017106 Pump for conveying gases and providing a differential pressure |
| 05/16/1991 | WO1991006773A1 Scroll compressor |
| 05/16/1991 | WO1991006771A1 Scroll compressor |
| 05/16/1991 | WO1991006766A1 Scroll compression |
| 05/16/1991 | WO1991006765A1 Scroll compressor |
| 05/16/1991 | WO1991006764A1 Scroll compressor |
| 05/16/1991 | WO1991006763A1 Scroll compressor |
| 05/08/1991 | EP0426078A1 Method of operating a volumetric pump |