Patents for F04C 27 - Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids (2,516)
11/1997
11/27/1997DE19620480A1 Orbiting motion spiral compressor
11/12/1997EP0806569A2 Scroll compressor
11/06/1997DE19710419A1 Vane type compressor for e.g. air conditioner used in motor vehicle
11/05/1997CN1163991A Scroll compressor
10/1997
10/08/1997EP0698185B1 Rotary screw compressor with seal means
10/08/1997CN1161415A Vortex compressor
10/07/1997US5674062 Hermetic compressor with heat shield
09/1997
09/03/1997EP0793020A1 Vane type compressor
08/1997
08/26/1997US5660539 Scroll compressor
08/26/1997US5660538 Suction mechanism of a fluid displacement apparatus
08/12/1997US5655782 Seal device for Lysholm compressor
07/1997
07/30/1997EP0674751B1 Rotary screw compressor with shaft seal
07/22/1997US5649816 Hermetic compressor with heat shield
07/16/1997CN1154446A Novel sealing structure of roots blower
07/09/1997EP0711387B1 Vacuum pump with a gas ballast device
07/09/1997CN1154156A Axial sealing apparatus for scroll type compressor
07/08/1997US5645408 In a gamma camera system
07/02/1997EP0781925A2 Scroll fluid discharging apparatus
06/1997
06/25/1997EP0780576A2 Scroll fluid apparatus
06/24/1997US5641280 For oil-free air
06/10/1997US5636976 Tip seal for scroll type compressor and manufacturing method therefor
06/05/1997DE19544994A1 Multiple-shaft vacuum pump with gears divided off from pumping space
06/04/1997EP0777051A2 Scroll compressor
05/1997
05/28/1997EP0775812A1 Seal arrangement for engine-driven supercharger
05/27/1997US5632612 Scroll compressor having a tip seal
05/27/1997US5632611 Scroll type pump
05/21/1997EP0714482B1 Vacuum pump with oil separator
05/20/1997US5630712 Electrically-driven closed scroll compressor having means for minimizing an overturning moment to an orbiting scroll
05/15/1997WO1997017545A1 Helical compressor
05/15/1997WO1997017543A1 Helical compressor
05/14/1997EP0772742A1 Axial sealing apparatus for scroll type compressor
05/07/1997DE19603110A1 Kompressor Compressor
05/07/1997CN1149108A Perfected twin-screw pump, particularly suitable for pumping of biphase fluids in submarine environment
05/02/1997EP0742869A4 Scroll-type fluid displacement device having high built-in volume ratio and semi-compliant biasing mechanism
04/1997
04/30/1997CN1148672A Sectional front-end sealing device for volume type vortex fluid compression device
04/23/1997EP0769623A1 Scroll type fluid displacement apparatus with an axial seal plate
04/22/1997US5622488 Scroll type fluid machine having first and second frame members to increase air tightness
04/16/1997CN1147598A Double-loop spiral-slot end sealing
04/16/1997CN1147596A Ring Liquid Compression engine
04/01/1997US5616016 Pressure biased co-rotational scroll apparatus with enhanced lubrication
03/1997
03/25/1997US5613841 Capacity modulated scroll machine
03/19/1997CN1145456A Sealing assembly for rotary oil pumps and method of using same
03/18/1997US5611674 Capacity modulated scroll machine
03/18/1997US5611659 Method and a device for reducing the gap between a static part and a movable part
03/12/1997EP0761969A1 Screw pump
03/12/1997CN1144885A Scroll compressor
03/05/1997EP0541801B1 Rotary compressor
03/04/1997US5607288 Scroll machine with reverse rotation protection
02/1997
02/19/1997EP0758717A1 Liquid ring compressor
02/17/1997CA2183309A1 Liquid-ring compressor
02/13/1997WO1997005389A1 Spiral compressor, useful in particular to generate compressed air for rail vehicles
02/11/1997US5601423 High clearance sliding vane pump
02/06/1997DE19604447A1 Spiralverdichter Scroll compressor
02/04/1997US5599176 Threaded-rotor compressor
01/1997
01/29/1997EP0756088A2 Scroll compressor
01/29/1997CN1141394A Scroll compressor
01/22/1997EP0754861A2 Scroll compressor with liquid injection
01/14/1997US5593295 Scroll compressor construction having an axial compliance mechanism
01/07/1997US5591014 Scroll machine with reverse rotation protection
01/07/1997CA2099150C Scroll compressor lubrication control
01/01/1997CN1033713C Vortex volume-type fluid displacement device
12/1996
12/31/1996US5588820 Scroll compressor having an axial compliance pressure chamber
12/17/1996US5584678 Scroll type fluid machine having tip seals of different carbon fiber composition rates
12/11/1996EP0747598A2 Capacity modulated scroll machine
12/11/1996EP0747597A2 Capacity modulated scroll machine
12/11/1996CN1137614A Capacity modulated scroll machine
12/04/1996CN1137100A Eddy air compressor
12/03/1996US5580230 Scroll machine having an axially compliant mounting for a scroll member
12/03/1996US5580228 Scroll compressor having grooves for seal members
11/1996
11/27/1996EP0744568A1 A pump provided with at least one rotary shaft
11/20/1996EP0743454A2 Scroll type fluid displacement apparatus
11/20/1996EP0742869A1 Scroll-type fluid displacement device having high built-in volume ratio and semi-compliant biasing mechanism
11/07/1996WO1996035056A1 Axial sealing apparatus for scroll type compressor
10/1996
10/30/1996CN1134740A Scroll apparatus with enhanced lubrication
10/24/1996WO1996033338A1 Steam-driven screw machine and a method of converting thermal energy to mechanical energy
10/22/1996US5567137 Scroll compressor with shaft seal lubrication
10/17/1996DE19516994C1 Fluid ring machine
10/09/1996EP0736692A1 Sealing, bearing support and driving of the rotors of a dry running screw compressor
10/09/1996CN1132826A Vortex-type compressor
10/08/1996US5562435 Structure for preventing axial leakage in a scroll compressor
10/08/1996US5562434 Scroll compressor having optimized tip seal grooves
10/08/1996US5562426 Scroll type refrigerant compressor
10/08/1996US5562182 Oil diverting unit for a refrigerant compressor
10/02/1996EP0735270A2 Scroll type fluid machine
10/02/1996DE19512949A1 Device for sealing screw compressor with at least two rotors
10/02/1996CN1132319A Cyclone fluid machinery
09/1996
09/18/1996EP0672222B1 Process and device for reducing the gap between a static part and a movable part
09/18/1996CN1131238A Scroll compressor
09/10/1996US5554018 Transmission with revolving bearing and seal used hereby
08/1996
08/20/1996US5547355 Scroll type machine having means to prevent or suppress deflection of legs of scroll-supporting frame
08/13/1996US5545020 Scroll type compressor with spiral seals
08/07/1996EP0725244A1 Emission seal
07/1996
07/30/1996US5540572 Structure for preventing axial leakage in scroll compressor
07/17/1996EP0721545A1 Scroll apparatus with enhanced lubrication
07/16/1996US5536152 Scroll compressor having improved orbital drive mechanism
07/09/1996US5533887 Fluid rotary apparatus having tapered rotors
07/04/1996WO1996020345A1 Scroll compressor having bearing structure in the orbiting scroll to eliminate tipping forces
07/02/1996US5531578 For a gas including a lubricant
07/02/1996CA2132173C Variable capacity vane compressor with axial pressure device
06/1996
06/27/1996WO1996019667A1 Vane type compressor
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