| Patents for F04C 18 - Rotary-piston pumps specially adapted for elastic fluids (19,462) |
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| 05/14/1997 | CN1149674A Rotary compressor braked by reverse rotation |
| 05/13/1997 | US5628194 Process for pumping gaseous helium at cryogenic temperatures by a positive displacement pump |
| 05/13/1997 | CA2053285C Gearing system |
| 05/09/1997 | WO1997016645A1 Multi-rotor helical-screw compressor |
| 05/07/1997 | EP0771404A1 Refrigeration system and pump therefor |
| 05/07/1997 | EP0771394A1 Air cooling system for scroll compressors |
| 05/07/1997 | DE19603110A1 Kompressor Compressor |
| 05/07/1997 | CN1034831C Drive bush for use in scroll type fluid machine |
| 05/07/1997 | CN1034830C Scroll type compressor |
| 05/06/1997 | US5626469 Scroll apparatus |
| 05/06/1997 | US5626032 Cyclothermic converter vane pump and impeller system |
| 05/06/1997 | CA2106647C Valved discharge mechanism in a refrigerant compressor |
| 05/02/1997 | EP0770464A1 Composite fiber rotor vane and method for its production |
| 05/02/1997 | EP0770447A2 Method of connecting steel part with aluminum part and product made by the same |
| 05/02/1997 | EP0742869A4 Scroll-type fluid displacement device having high built-in volume ratio and semi-compliant biasing mechanism |
| 05/01/1997 | WO1997015759A1 Transmission including a two-part clutch arrangement |
| 04/30/1997 | CN1148672A Sectional front-end sealing device for volume type vortex fluid compression device |
| 04/30/1997 | CN1034783C Method for controlling of operation of compressor |
| 04/30/1997 | CN1034753C Rotary compressor with oil injection |
| 04/30/1997 | CN1034752C Fluid pump and rotary machine having said fluid pump |
| 04/30/1997 | CN1034751C A blade for a rotary compressor |
| 04/29/1997 | US5624250 Tooth profile for compressor screw rotors |
| 04/29/1997 | US5624249 Pumping process for operating a multi-phase screw pump and pump |
| 04/29/1997 | US5624247 Balance type scroll fluid machine |
| 04/29/1997 | US5624243 Scroll compressor capable of effectively cooling motor thereof |
| 04/24/1997 | WO1997014891A1 Refrigerant compressor |
| 04/24/1997 | DE19539035A1 Rotary positive displacement pump for laboratory and motor vehicle use |
| 04/24/1997 | DE19539002A1 Tooth profile for screw compressor |
| 04/24/1997 | DE19538684A1 Centrifugal compressor for compression of gases |
| 04/24/1997 | CA2207398A1 Refrigerant compressor |
| 04/23/1997 | EP0769623A1 Scroll type fluid displacement apparatus with an axial seal plate |
| 04/23/1997 | EP0708889B1 Rotary screw compressor |
| 04/23/1997 | CN2252902Y Underwater lobed rotor blower |
| 04/23/1997 | CN2252901Y Whirl compressor with medium pressure inside on its casing |
| 04/23/1997 | CN1148142A Mechanism for preventing self-rotating for vortex compressor |
| 04/23/1997 | CN1148141A Multi-cylinder rotary air compressor |
| 04/23/1997 | CN1034689C Horizontal rotative type compressor |
| 04/22/1997 | US5622488 Scroll type fluid machine having first and second frame members to increase air tightness |
| 04/22/1997 | US5622487 Scroll compressor having a separate stationary wrap element secured to a frame |
| 04/22/1997 | US5622052 Double-flow hydrostatic radial piston engine with axial flow, thrust compensation, and shaft bearing |
| 04/16/1997 | EP0768465A1 Gas compressor |
| 04/16/1997 | CN1034604C Unit for discharging of compressed gas in rotative compressor |
| 04/09/1997 | EP0766790A1 Rotary displacement compressor with liquid circulation system |
| 04/09/1997 | CN2251637Y Automatic compensating rotating compression engine |
| 04/09/1997 | CN1147063A Vortex type compressor having non-tracking motion vortex part location device |
| 04/09/1997 | CN1147062A Vortex type compressor having non-tracking motion vortex part location device |
| 04/03/1997 | WO1997012148A1 Rotary compressor |
| 04/02/1997 | CN1146534A Eddy tube type fluid machinery |
| 04/01/1997 | US5616019 Rolling piston type expansion machine |
| 04/01/1997 | US5616018 Oil supplying apparatus for a horizontal type rotary compressor |
| 04/01/1997 | US5616017 Rotary compressor having a cylinder portion formed of a valve sheet |
| 04/01/1997 | US5616016 Pressure biased co-rotational scroll apparatus with enhanced lubrication |
| 04/01/1997 | US5616015 High displacement rate, scroll-type, fluid handling apparatus |
| 04/01/1997 | US5615480 Methods for making scroll compressor element |
| 03/27/1997 | WO1997011277A1 Rotary vane pump |
| 03/26/1997 | EP0722533B1 Rotary univane gas compressor |
| 03/26/1997 | CN2250437Y New structure of Roots blower and vacuum pump with counter current device |
| 03/25/1997 | US5613846 Filling, fluid-transporting, and pumping device |
| 03/25/1997 | US5613843 Package-type screw compressor |
| 03/25/1997 | US5613841 Capacity modulated scroll machine |
| 03/19/1997 | EP0763660A2 Variable capacity vane compressor with linear actuator |
| 03/19/1997 | EP0763659A2 Vane pump |
| 03/19/1997 | CN1145455A Screw compressor with liquid lock preventing slide |
| 03/18/1997 | US5611674 Capacity modulated scroll machine |
| 03/18/1997 | CA2062274C Scroll type compressor with improved lubricating arrangement for movable parts thereof |
| 03/13/1997 | WO1997009534A1 High-pressure dome type compressor |
| 03/12/1997 | EP0761975A1 Gas compressor |
| 03/12/1997 | EP0761974A1 Screw-type compressor |
| 03/12/1997 | EP0761973A2 Gas compressor |
| 03/12/1997 | EP0761972A1 Vane compressor having reduced pressure pulses |
| 03/12/1997 | EP0761971A1 Scroll type fluid machine |
| 03/12/1997 | CN2249317Y Liquid delivery machine |
| 03/12/1997 | CN1144886A Liquid compressor |
| 03/12/1997 | CN1144885A Scroll compressor |
| 03/11/1997 | US5609478 Radial compliance mechanism for corotating scroll apparatus |
| 03/11/1997 | US5609475 Compressor with a hypotrochoidal design having a fluid delivery which is not solely dependent on a drive RPM |
| 03/05/1997 | EP0746672A4 Positive displacement pump apparatus |
| 03/05/1997 | EP0692074B1 Scroll gas compression apparatus |
| 03/05/1997 | EP0541801B1 Rotary compressor |
| 03/05/1997 | CN2248788Y Double cam rotor blade pump |
| 03/04/1997 | US5607288 Scroll machine with reverse rotation protection |
| 02/20/1997 | DE4143555C2 Compressor with built-in electric motor |
| 02/20/1997 | DE19633089A1 Current flow machine, especially compactor or blower |
| 02/19/1997 | EP0758716A2 Vane pump |
| 02/19/1997 | EP0758432A1 Vapor control system |
| 02/19/1997 | CN2247730Y Axial inlet vortex pump |
| 02/19/1997 | CN1143165A Screw tooth profile curve of high efficency screw compressor (pump) and its working tool |
| 02/18/1997 | US5603614 Fluid compressing device having coaxial spiral members |
| 02/13/1997 | WO1997005391A1 Calculation and precision processing of cardiocle and expanded cardioid casing curved surfaces for eccentric rotor vane pumps |
| 02/13/1997 | WO1997005390A1 Spiral compressor, useful in particular to generate compressed air for rail vehicles |
| 02/13/1997 | WO1997005389A1 Spiral compressor, useful in particular to generate compressed air for rail vehicles |
| 02/12/1997 | EP0758055A1 Apparatus and method for electronically controlling inlet flow and preventing backflow in a compressor |
| 02/06/1997 | WO1997004236A1 Oil-sealed vane-type rotary vacuum pump with oil feed |
| 02/06/1997 | WO1997004215A1 Scroll decompression device for cryogenic temperatures |
| 02/06/1997 | DE19604447A1 Spiralverdichter Scroll compressor |
| 02/06/1997 | DE19528071A1 Spiralverdichter Scroll compressor |
| 02/05/1997 | EP0757178A1 Rotation preventing device for orbiting member of fluid displacement apparatus |
| 02/05/1997 | EP0699276B1 Pumping process for operating a multi-phase screw pump and pump |
| 02/05/1997 | CN2246721Y Mortise and tenon jointed impeller assembly of Roots blower |
| 02/04/1997 | US5599178 Scroll-type compressor having fastening bolts for the fixed scroll |