| Patents for F04C 18 - Rotary-piston pumps specially adapted for elastic fluids (19,462) |
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| 06/07/1994 | US5318151 Method and apparatus for regulating a compressor lubrication system |
| 06/07/1994 | CA2052318C Scroll type compressor |
| 06/07/1994 | CA2050693C Scroll type compressor |
| 06/01/1994 | CN1024834C Scroll type compressor |
| 05/31/1994 | US5316454 Fluid pump and rotary machine having said fluid pump |
| 05/25/1994 | CN2166261Y Planetary straight-lobe compressor |
| 05/25/1994 | CN2166260Y 旋转式压缩机 Rotary compressor |
| 05/25/1994 | CN2166259Y Helical linkage driving unit for Roots blower |
| 05/24/1994 | US5314321 Screw-type rotary fluid machine including rotors having treated surfaces |
| 05/24/1994 | US5314320 Screw vacuum pump with a reduced starting load |
| 05/24/1994 | US5314318 Horizontal multi-cylinder rotary compressor |
| 05/24/1994 | US5314317 Method of working scroll member of scroll compressor |
| 05/24/1994 | US5314316 Scroll apparatus with reduced inlet pressure drop |
| 05/19/1994 | DE4339203A1 Spiral compressor for vehicle cooling system - uses engaging spiral passages in two blocks to compress fluid, with moving block driven eccentrically from shaft |
| 05/19/1994 | DE4338865A1 Spiral compressor with counterweight e.g. for vehicle cooling system - uses engaging spiral passages in two blocks to compress fluid, with moving block driven eccentrically from shaft |
| 05/18/1994 | EP0597731A1 Rotor for vane pump |
| 05/18/1994 | EP0597730A1 Two stage vacuum pump |
| 05/18/1994 | CN1086938A Method for controlling of operation of compressor |
| 05/17/1994 | US5312234 Scroll compressor formed of three sub-assemblies |
| 05/17/1994 | US5312229 Scroll type compressor having curved bearing surfaces |
| 05/17/1994 | US5312192 Bearing lubricating structure for rotary machinery |
| 05/11/1994 | WO1994010425A1 Scroll compressor drive having a brake |
| 05/11/1994 | EP0506816B1 Screw compressor for internal combustion engines |
| 05/11/1994 | DE4313457C1 Pump with intermeshing lobed rotors - has adjusting mechanism in each lobe thrusting elastomer cover at tip outwards and has adjusting body sliding in groove inside lobe |
| 05/10/1994 | US5310326 Rotary compressor with improved bore configuration and lubrication system |
| 05/10/1994 | US5310324 Scroll-type fluid machine with attaching means for the balance weight |
| 05/10/1994 | US5310320 Rotor for a rotary screw machine having internal member and external shell made of pressed metal powder |
| 05/10/1994 | CA2044326C Scroll type fluid machinery |
| 05/05/1994 | DE4336713A1 Spiral compressor for vehicle air conditioning system - uses flanged screw and spring to control bush and weight on eccentric shaft |
| 05/04/1994 | CN1086294A Improved vortex volume-type fluid displacement device |
| 05/04/1994 | CN1086293A Vortex volume-type fluid displacement device |
| 05/03/1994 | CA1329184C Common compression zone access ports for positive displacement compressor |
| 05/03/1994 | CA1329183C Delivery pressure operated thrust control system for working contact surfaces in a scroll compressor |
| 05/03/1994 | CA1329182C Scroll compressor with anti-fluttering valves for the variable displacement mechanism |
| 04/28/1994 | WO1994009262A1 Spiral compressor |
| 04/28/1994 | WO1994009260A1 Sliding vane machine |
| 04/28/1994 | WO1994009259A1 Scroll apparatus with reduced inlet pressure drop |
| 04/27/1994 | EP0594461A1 Vacuum pumps |
| 04/27/1994 | EP0594431A2 Refrigerant compressor and refrigeration system incorporating same |
| 04/27/1994 | CN2163253Y Connecting rod roots blower |
| 04/27/1994 | CN1085992A A blade for a rotary compressor |
| 04/26/1994 | US5306128 Discharge valve device of a rotary compressor |
| 04/26/1994 | US5306126 Scroll compressor lubrication control |
| 04/21/1994 | DE4234391A1 OIl filer appts., for screw compressor - includes compressor housing recess for filter insert |
| 04/19/1994 | US5304047 Scroll compressor of two-stage compression type having an improved volumetric efficiency |
| 04/19/1994 | US5304045 Closed type motor-driven compressor, a scroll compressor and a scroll lap machining end mill |
| 04/14/1994 | WO1994008141A1 Method of operating a claw-type vacuum pump, and a claw-type vacuum pump suitable for carrying out the method |
| 04/14/1994 | WO1994008140A1 Compressor |
| 04/14/1994 | DE4234055A1 Spiralenkompressor Scroll compressor |
| 04/13/1994 | EP0592119A1 Rotary piston fluid displacement apparatus |
| 04/13/1994 | EP0591979A1 Screw rotor toth profile |
| 04/13/1994 | EP0591539A1 Rotary compressor in which blade and roller are integrated |
| 04/12/1994 | US5302096 High performance dual chamber rotary vane compressor |
| 04/12/1994 | US5302095 Orbiting rotary compressor with orbiting piston axial and radial compliance |
| 04/07/1994 | DE4331964A1 Dry running rotary vacuum pump - has pair of sliding vanes inside central bearing sleeve |
| 04/07/1994 | DE4233142A1 Verfahren zum Betrieb einer Klauenvakuumpumpe und für die Durchführung dieses Betriebsverfahrens geeignete Klauenvakuumpumpe Method of operating a claw-type vacuum pump and for the implementation of the operating method suitable claw-type vacuum pump |
| 04/07/1994 | CA2079966A1 Constrained vane compressor with oil skive |
| 04/05/1994 | US5299924 Compressor having a blade shape for minimal strain |
| 03/31/1994 | DE4333148A1 Worm compressor with stationary and movable worm - has independently acting first and second mechanisms to transmit force from worm, and determine worm path |
| 03/31/1994 | DE4232119A1 Double shaft vacuum roots pump - has two rotors forming working and control pistons and housing having overflow valve in discharge aperture with excess pressure valves in side parts on pressure socket |
| 03/30/1994 | EP0589667A1 Valved discharge mechanism of a refrigerant compressor |
| 03/30/1994 | EP0589236A2 Orbiting member fluid displacement apparatus with rotation preventing mechanism |
| 03/30/1994 | CN2160027Y Rotary piston air compressor |
| 03/23/1994 | CN1084256A Swirl compressor spinning disk high precision processing unit |
| 03/22/1994 | US5295813 Scroll-compressor having flat driving surfaces |
| 03/22/1994 | US5295808 Synchronous rotating type scroll fluid machine |
| 03/22/1994 | US5295798 Fluid rotating apparatus with rotor communicating path |
| 03/22/1994 | US5295788 Rotor assembly for screw pump |
| 03/17/1994 | WO1994005957A1 Portable self-contained power and cooling system |
| 03/17/1994 | DE4330609A1 Rotating piston machine with spiral element design - has spiral body in form of involute with base circle radius to alter involute angle |
| 03/17/1994 | DE4329159A1 Variable displacement compression with cylinder chamber in housing - has rotor with outer face slit parallel to rotor axis and eccentrically fitted in cylinder chamber |
| 03/17/1994 | CA2142865A1 Portable self-contained power and cooling system |
| 03/16/1994 | EP0587157A2 Package-type screw compressor |
| 03/15/1994 | US5293850 Scroll type rotary internal combustion engine |
| 03/09/1994 | EP0585911A1 Two stage primary dry pump |
| 03/09/1994 | CN1083569A Fluid compressor |
| 03/03/1994 | DE4327994A1 Vane cell compressor assembly - has rotor with grooves containing blades, positioned so that blade tips do not project into intake apertures |
| 03/03/1994 | DE4322827A1 Fluid compressor for compression of cooling gas in cooling cycle - has cylinder with discharge ends and internal rotary body with spiral grooves containing spiral plates |
| 03/02/1994 | EP0584748A2 Control apparatus for an induction motor |
| 03/02/1994 | EP0584466A2 Scroll compressor lubrication control |
| 03/02/1994 | EP0584177A1 A rotary displacement compressor and a method for regulating a rotary displacement compressor. |
| 03/02/1994 | CN2158000Y Multi-function pump |
| 03/02/1994 | CN1083181A Method of working scroll member of scroll compressor |
| 03/01/1994 | US5290161 Control system for a clutchless scroll type fluid material handling machine |
| 03/01/1994 | US5290150 For use in a hydraulic machine |
| 02/23/1994 | EP0584036A1 Dynamically balanced co-orbiting scrolls |
| 02/17/1994 | WO1994003730A1 Pair of conveyor worms for rotary positive-displacement pumps |
| 02/17/1994 | CA2141455A1 Pair of conveyor worms for rotary positive-displacement pumps |
| 02/16/1994 | CN2156318Y 泵 Pump |
| 02/15/1994 | US5286180 Method for attaching fixed scroll to rear head of scroll compressor |
| 02/15/1994 | US5286179 Thermal isolation arrangement for scroll fluid device |
| 02/15/1994 | US5286174 Fluid compression device |
| 02/08/1994 | US5284426 Rotary compressor with multiple compressor stages and pumping capacity control |
| 02/08/1994 | CA2090390A1 Fail safe mechanical oil shutoff arrangement for screw compressor |
| 02/01/1994 | US5282729 Radical actuator for a de-orbiting scroll in a scroll type fluid handling machine |
| 02/01/1994 | US5282728 Inertial balance system for a de-orbiting scroll in a scroll type fluid handling machine |
| 01/26/1994 | EP0579888A1 Rotating scroll pump |
| 01/25/1994 | US5281115 Rotary screw machine having thrust balancing means |
| 01/25/1994 | US5281114 Dynamically balanced co-orbiting scrolls |
| 01/19/1994 | EP0579374A1 Scroll compressor with liquid injection |