| Patents for F04C 23 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids (6,201) |
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| 06/19/2001 | US6247909 Bearing assembly for sealed compressor |
| 06/19/2001 | US6247907 Thin counterweight for sealed compressor |
| 06/14/2001 | WO2001042659A1 Scroll type compressor |
| 06/12/2001 | US6244837 Deformed compressor motor winding to accomodate components |
| 06/07/2001 | US20010002981 Rotary compressor with vane body immersed in lubricating fluid |
| 06/07/2001 | US20010002980 Scroll compressor discharge muffler |
| 06/05/2001 | US6241495 Modified positioning mechanism for stationary scroll of scroll compressor |
| 05/31/2001 | WO2001038740A1 Scroll type compressor |
| 05/31/2001 | US20010001923 Air conditioner |
| 05/29/2001 | CA2216429C Gas flow and lubrication of a scroll compressor |
| 05/29/2001 | CA2058618C Scroll compressor with discharge valve opened by centrifugal force |
| 05/24/2001 | US20010001638 Sealed-type compressor |
| 05/23/2001 | EP1101943A2 Control of a two-stage vacuum pump |
| 05/23/2001 | EP1101942A2 Evacuating apparatus |
| 05/17/2001 | WO2001034979A1 Scroll compressor for natural gas |
| 05/16/2001 | CN1295196A Enclosed rotary compressor |
| 05/15/2001 | US6231319 Hermetic compressor |
| 05/09/2001 | CN1065595C 涡旋式压缩机 Scroll compressor |
| 05/08/2001 | US6227828 Gear pump for use in an electrically-operated sealed compressor |
| 05/03/2001 | WO2001031202A1 Multistage compressor unit and method for regulating such multistage compressor unit |
| 04/25/2001 | CN1065026C Rotative vacuum pump composed of two parts |
| 04/25/2001 | CN1065025C Vortex type fluid machinery |
| 04/24/2001 | US6220839 Scroll compressor discharge muffler |
| 04/24/2001 | US6220825 Rotary-screw air compressor having a separator and a cooler fan assembly |
| 04/17/2001 | US6217305 Screw pumps |
| 04/11/2001 | CN1290816A Overheat protector for whirl compressor |
| 04/05/2001 | WO2001023762A1 Screw-type pump, especially vacuum screw-type pump, with two pump stages |
| 04/05/2001 | DE10046686A1 Compressor-regenerator combination for fuel cell has compression, regeneration stages with common drive source, adjacent chambers, sealing keeping exhaust gas from compression chamber |
| 04/05/2001 | DE10040977A1 Compressor-regenerator combination for fuel cell has displacement compression and regenerative mechanism parts connected to fuel cell delivery and gas output sides respectively |
| 04/04/2001 | EP1088170A1 Pulp pump |
| 04/04/2001 | EP1088168A1 Two stage compressor and a method for cooling such a compressor |
| 04/04/2001 | CN2425951Y Large water-distribution station machine unit capable of using 220 v power source |
| 04/03/2001 | US6210132 Partition means for directing air flow over a cooler in an oilless scroll compressor |
| 04/03/2001 | US6210130 Rotary compressor, refrigerating cycle using the compressor, and refrigerator using the compressor |
| 04/03/2001 | CA2178881C Scroll type fluid machine |
| 03/29/2001 | WO2001022009A1 Multi-stage compression refrigerating device |
| 03/29/2001 | WO2001022008A1 Multi-stage compression refrigerating device |
| 03/29/2001 | WO2001021958A1 Screw compressor and refrigerator |
| 03/29/2001 | DE19945871A1 Schraubenpumpe, insbesondere Schraubenvakuumpumpe, mit zwei Pumpstufen Screw pump, in particular screw vacuum pump with two pumping stages |
| 03/28/2001 | CA2318012A1 Compressor and regenerator for fuel cell |
| 03/28/2001 | CA2314704A1 Compression regenerative machine for fuel cell |
| 03/20/2001 | US6203298 Entrapped separator plate for scroll compressor |
| 03/20/2001 | US6202428 Air conditioner |
| 03/15/2001 | WO2001018400A1 Compressor system and method for compressing a gas |
| 03/13/2001 | US6200116 Vacuum pumps |
| 03/08/2001 | WO2001016490A1 Internal intermediate pressure 2-stage compression type rotary compressor |
| 03/08/2001 | WO2001016485A1 Closed motor-driven compressor |
| 03/08/2001 | DE19942265A1 Verdichteranlage und Verfahren zur Verdichtung eines Gases Compressor system and method for compressing a gas |
| 03/07/2001 | EP1081383A2 Rotary compressor |
| 03/07/2001 | CN1286359A Two-cylinder two-stage compressing rotating compressor |
| 03/06/2001 | US6196814 Positive displacement pump rotatable in opposite directions |
| 03/06/2001 | US6196810 Multistage vacuum pump assembly |
| 03/06/2001 | US6195889 Method to set slot width in a rotary compressor |
| 02/28/2001 | CN1285893A Rotary positive-displacement machines |
| 02/27/2001 | US6193487 Scroll-type fluid displacement device for vacuum pump application |
| 02/27/2001 | US6193485 Seal structure for casing |
| 02/27/2001 | US6193484 Force-fit scroll compressor assembly |
| 02/22/2001 | WO2001012992A2 Compressor |
| 02/20/2001 | US6190147 Rotation balancing mechanism for orbiting scrolls of scroll-type compressors |
| 02/20/2001 | US6189335 Multi-stage compressing refrigeration device and refrigerator using the device |
| 02/15/2001 | WO2001011239A2 Vacuum pump aggregate |
| 02/15/2001 | DE19937704A1 Vakuumpumpenaggregat Vacuum pump unit |
| 02/15/2001 | DE19936644A1 Elektrische Luftpumpe für Kraftfahrzeuge Electric air pump for motor vehicles |
| 02/14/2001 | CN1283749A Multicylinder rotary compressor |
| 02/14/2001 | CN1283748A Single rotor expansion press able to replace two-phase flow throttle valve |
| 02/13/2001 | US6186753 Apparatus for minimizing oil leakage during reverse running of a scroll compressor |
| 02/13/2001 | US6186556 Enclosed type compressor and its manufacturing method |
| 02/13/2001 | US6185956 Single rotor expressor as two-phase flow throttle valve replacement |
| 02/08/2001 | DE19934315A1 Verfahren und Vorrichtung zum Verdichten eines gasförmigen Mediums Method and device for compressing a gaseous medium, |
| 02/07/2001 | EP1074743A2 Electrical motor driven air pump for vehicles |
| 02/07/2001 | EP1074742A2 Multi-cylinder rotary compressor |
| 02/07/2001 | CN1061743C Rotative compressor |
| 02/06/2001 | US6183215 Electric motor driven compressor |
| 01/30/2001 | US6179589 Scroll machine with discus discharge valve |
| 01/24/2001 | EP1070610A2 Method and apparatus for compressing a gas |
| 01/24/2001 | CN1061132C Vortex compressor |
| 01/23/2001 | US6176687 Resonator for rotary compressor |
| 01/23/2001 | US6176686 Scroll machine with capacity modulation |
| 01/17/2001 | CN1280251A Silencer for scroll compressor exhaust gas |
| 01/16/2001 | US6174150 Scroll compressor |
| 01/16/2001 | US6174149 Scroll compressor with captured counterweight |
| 01/11/2001 | DE19929631A1 Oil and vacuum pump arrangement in esp. IC engines are arranged in modular unit with common pump shaft |
| 01/10/2001 | EP1067342A2 Expander-compressor as two-phase flow throttle valve replacement |
| 01/10/2001 | EP1067341A2 Apparatus having a refrigeration circuit |
| 01/10/2001 | EP1067289A2 Scroll compressor discharge muffler |
| 01/10/2001 | CN1279386A Refrigerant compressor and refrigerator equipped therewith |
| 01/10/2001 | CN1279357A Multi-cylinder rotary compressor |
| 01/10/2001 | CN1279356A Closed rotary compressor |
| 01/09/2001 | US6171084 Discharge valve |
| 01/09/2001 | US6171076 Hermetic compressor assembly having a suction chamber and twin axially disposed discharge chambers |
| 01/04/2001 | DE19930635A1 Energy converter for converting electricity to hydraulic power, with electric motor and hydraulic pump independently attached to base frame |
| 01/03/2001 | EP1065377A2 Hermetic compressor |
| 01/03/2001 | EP1065376A2 Hermetic compressor |
| 01/03/2001 | CN1278892A Hermetic scroll compressor |
| 01/02/2001 | US6168374 Friction vacuum pump |
| 01/02/2001 | US6167719 Compressor for refrigeration cycle |
| 12/28/2000 | DE19927383A1 Luftverflüssigungsmaschine Air liquefaction machine |
| 12/26/2000 | US6164934 Sealed type compressor |
| 12/21/2000 | WO2000077404A1 Air liquefaction machine |
| 12/19/2000 | US6162035 Helical-blade fluid machine |