| Patents for F04C 18 - Rotary-piston pumps specially adapted for elastic fluids (19,462) |
|---|
| 01/19/2000 | EP0851980B1 Rotary vane pump |
| 01/19/2000 | CN1241685A Hermetic compressor |
| 01/18/2000 | US6015277 Fabrication method for semiconductor substrate |
| 01/18/2000 | US6014791 Quiet vacuum cleaner using a vacuum pump with a lobed chamber |
| 01/18/2000 | CA2134923C Scroll compressor stabilizer ring |
| 01/18/2000 | CA2052350C Scroll type compressor |
| 01/17/2000 | CA2277319A1 Electroplating process for oldham ring and scroll member type compressor comprising the same |
| 01/13/2000 | WO2000001461A1 Liquid separator for a liquid injected compressor |
| 01/13/2000 | DE19829618A1 Twin shaft rotary piston pump for simultaneously producing vacuum and excess pressure |
| 01/12/2000 | EP0971130A2 Scroll compressor with anti-rotation mechanism |
| 01/12/2000 | EP0865576A4 Scroll element having a relieved thrust surface |
| 01/12/2000 | CN1241247A Fluid compressor |
| 01/12/2000 | CN1240885A Conjugate screw rotor profile |
| 01/11/2000 | US6012911 Scroll type compressor having an oil supply path for the eccentric bearing |
| 01/11/2000 | CA2055907C Rotary type multi-stage gas compressor |
| 01/06/2000 | WO2000000744A1 Two stage compressor and a method for cooling such a compressor |
| 01/05/2000 | EP0969209A2 Scroll-type variable-capacity compressor |
| 01/05/2000 | CN1240502A Pair of co-operating screw rotors, screw rotor and rotary screw machine |
| 01/05/2000 | CN1240257A Gear type compression (expansion) machine |
| 01/05/2000 | CN1048077C Method and apparatus for assembling electric motor with low dimensional accuracy |
| 12/30/1999 | DE19928808A1 Spiral compressor |
| 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 | EP0866918B1 Twin feed screw |
| 12/29/1999 | CN1240017A Improved gas actuated slide valve in screw compressor |
| 12/29/1999 | CN1239757A Rotary compressor having plurality of compression chambers for multistage compression |
| 12/28/1999 | US6006542 Refrigerant compressor and refrigerating apparatus |
| 12/23/1999 | WO1999066174A1 Rotary machine |
| 12/23/1999 | CA2377657A1 Rotary machine |
| 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 |
| 12/22/1999 | EP0965758A2 Vacuum pump |
| 12/22/1999 | EP0965757A2 Vacuum pumps |
| 12/22/1999 | EP0965756A2 Screw pump |
| 12/22/1999 | CN1239190A Rotary compressor |
| 12/21/1999 | US6004197 Ergonomically friendly random orbital sander construction |
| 12/21/1999 | US6003324 Multi-rotor helical screw compressor with unloading |
| 12/16/1999 | WO1999064744A1 Multi-stage capacity control scroll compressor |
| 12/14/1999 | US6000920 Oil-flooded screw compressor with screw rotors having contact profiles in the shape of roulettes |
| 12/14/1999 | US6000917 Control of suction gas and lubricant flow in a scroll compressor |
| 12/09/1999 | WO1999063229A1 Screw compressor with adjustable full-load capacity |
| 12/09/1999 | WO1999063228A1 Rotary piston blower |
| 12/09/1999 | DE19923229A1 Method for collecting lubricating oil separated from the working fluid in a motor driven compressor |
| 12/08/1999 | EP0962658A2 Reverse rotation detection for compressors |
| 12/08/1999 | EP0962657A2 Scroll compressor having suction control valve |
| 12/08/1999 | EP0834018B1 Multistage, screw-spindle compressor |
| 12/08/1999 | CN2352729Y Semi-conducting helicoidal pump |
| 12/08/1999 | CN1237681A Volute disk for vortex fluid pump |
| 12/07/1999 | US5996364 Scroll compressor with unloader valve between economizer and suction |
| 12/07/1999 | US5996355 Thermodynamic closed cycle power and cryogenic refrigeration apparatus using combined work medium |
| 12/01/1999 | EP0961009A2 Conjugate screw rotor profile |
| 12/01/1999 | EP0819220B1 Gas flow and lubrication of a scroll compressor |
| 12/01/1999 | CN2351598Y 气马达 Gas motor |
| 12/01/1999 | CN1046990C Rotative fluid equipment |
| 11/30/1999 | US5993177 Scroll type compressor with improved variable displacement mechanism |
| 11/30/1999 | US5993171 Scroll-type compressor with variable displacement mechanism |
| 11/24/1999 | EP0959252A1 Scroll compressor with abrasion-resistant means between crank pin and movable scroll |
| 11/24/1999 | EP0959250A2 Screw compressor with balanced thrust |
| 11/24/1999 | CN1236064A Screw compressor with balanced thrust |
| 11/24/1999 | CN1046791C Oscillating type rotary compressor |
| 11/24/1999 | CN1046790C Positive displacement type vortex fluid compression device with sliding plane trust bearing |
| 11/23/1999 | US5987894 Temperature lowering apparatus using cryogenic expansion with the aid of spirals |
| 11/19/1999 | CA2272177A1 Scroll type compressor having an abrasion-resistant means between a crank pin and a movable scroll in an axial direction |
| 11/17/1999 | EP0957266A1 Scroll-type compressor |
| 11/17/1999 | CN1235245A Scroll-type compressor |
| 11/17/1999 | CN1235244A Rotor assembly of hermetic rotary compressor having supports for resisting movement of rotor magnets |
| 11/17/1999 | CN1235243A Hermetic rotary compressor with resonance chamber |
| 11/16/1999 | US5984653 Mechanism and method for aligning a fixed scroll in a scroll compressor |
| 11/11/1999 | WO1999057439A1 Vacuum pump |
| 11/11/1999 | WO1999057419A1 Rotating piston machine with three-blade rotors |
| 11/11/1999 | DE19820523A1 Spindle screw pump assembly for dry compression of gases |
| 11/11/1999 | DE19819538A1 Druck-Saug-Pumpe Pressure-suction pump |
| 11/10/1999 | CN1234492A Air conditioner adopting volute compressor |
| 11/09/1999 | US5979168 Single-source gas actuation for screw compressor slide valve assembly |
| 11/04/1999 | WO1999056020A1 Fluid pump |
| 11/04/1999 | DE19806346A1 Cooling and shaft sealing device for compressor |
| 11/03/1999 | EP0953771A1 Single-stage and multi-stage roots pump |
| 11/03/1999 | EP0635094B1 Scroll machine |
| 11/03/1999 | CN1233716A Hermetic rotary compressor |
| 11/03/1999 | CN1233715A Multiple and composite type vortex pump |
| 11/02/1999 | US5975854 Compressor with protection module |
| 10/28/1999 | WO1999054627A1 Positive displacement machine |
| 10/27/1999 | EP0952351A1 Volumetric machine |
| 10/27/1999 | EP0952308A1 Liquid sealed vane oscillator |
| 10/27/1999 | EP0834017B1 Vacuum pump |
| 10/27/1999 | EP0687816B1 Oscillating type rotary compressor |
| 10/27/1999 | CN2345740Y Rotary variable-capacitance aerostatic press |
| 10/27/1999 | CN1232927A Slidable discharge valve in hermetic rotary compressor |
| 10/26/1999 | US5970611 Method for processing a rotor used for a super charger |
| 10/22/1999 | CA2269139A1 Liquid-sealed vane oscillator |
| 10/21/1999 | WO1999053202A1 Scroll fluid machinery |
| 10/21/1999 | DE19817351A1 Screw spindle vacuum pump with gas cooling |
| 10/21/1999 | CA2287444A1 Scroll fluid machinery |
| 10/19/1999 | US5966949 Refrigerant of hydrofluorocarbon system not containing chlorine, ester compound oil phosphoric acid triester |
| 10/14/1999 | DE19912482A1 Fluid pump or compressor with impeller-type drive |
| 10/13/1999 | EP0949465A2 Compressor for refrigeration cycle |
| 10/07/1999 | WO1999050561A1 Vacuum pump |
| 10/07/1999 | WO1999050560A1 Screw rotor compressor having a movable wall portion |
| 10/07/1999 | DE19914770A1 Scroll type vacuum pump |
| 10/07/1999 | DE19814645A1 Multistage compression string for isothermal compression of gases in rotary-piston engine |
| 10/06/1999 | CN2342135Y Fan |