| 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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| 12/19/2000 | US6162033 Compressor economizer tube assembly |
| 12/13/2000 | CN1276487A 密封式压缩机 Hermetic compressor |
| 12/12/2000 | US6158995 Sealed compressor having pipe connectors and method of joining pipe connectors to sealed casing |
| 12/12/2000 | US6158989 Scroll compressor with integral outer housing and fixed scroll member |
| 12/12/2000 | US6158980 Compressor with motor |
| 12/07/2000 | WO2000073659A1 Apparatus for preventing vacuum compression of scroll compressor |
| 12/05/2000 | US6155502 Nozzle device for purging a vacuum pump |
| 11/30/2000 | DE19920279A1 Rotary piston blower has self-supporting pressure sound damper below blower stage and suction filter and an identical constructed suction sound damper below motor |
| 11/29/2000 | CN2408271Y Emergency fire fighting pump |
| 11/29/2000 | CN2408270Y Micro water/gas combined pump |
| 11/29/2000 | CN2408269Y Two stage synchronous rotary valve pump |
| 11/28/2000 | US6152714 Displacement type fluid machine having rotation suppression of an orbiting displacer |
| 11/21/2000 | US6149405 Double wrap dry scroll vacuum pump having a compressed gas cooling passage disposed in the scroll shaft |
| 11/14/2000 | US6146118 Oldham coupling for a scroll compressor |
| 10/31/2000 | US6139295 Bearing lubrication system for a scroll compressor |
| 10/31/2000 | US6139294 Stepped annular intermediate pressure chamber for axial compliance in a scroll compressor |
| 10/26/2000 | WO2000063560A1 Alignment of the bearings of the crankshaft of a scroll compressor |
| 10/24/2000 | US6135739 Scroll compressor |
| 10/24/2000 | US6135738 Scroll compressor having a discharge port in the moveable scroll |
| 10/19/2000 | DE10017091A1 Motor-powered compressor e.g. for vehicle air conditioning unit, has compression stage, motor, driver circuit for controlling motor drive, and driver circuit contained in stage of compressor on coolant suction side |
| 10/12/2000 | DE19915329A1 Compressor in wet form, with either induction air or air blown out flows out to cool motor in front of compressor block |
| 10/11/2000 | EP1043554A2 Refrigeration cycle apparatus |
| 10/10/2000 | US6129534 Vacuum pumps |
| 10/10/2000 | US6129532 CO2 compressor |
| 10/03/2000 | US6126425 Positive displacement pump |
| 09/27/2000 | CN1056947C 电动压缩机 Electric compressor |
| 09/26/2000 | US6123526 Multistage pump and method for assembling the pump |
| 09/26/2000 | US6123517 Scroll machine with capacity modulation |
| 09/21/2000 | DE10010864A1 Refrigeration circuit system has expansion energy recovery unit that converts expansion energy into mechanical energy and compresses coolant flowing into cooler |
| 09/20/2000 | EP1036276A1 Screw-type compressor |
| 09/20/2000 | EP1036253A1 Rotary positive-displacement machines |
| 09/20/2000 | CN1266975A Refrigerating device |
| 09/14/2000 | WO2000053932A1 Rotary helical screw-type compressor |
| 09/14/2000 | WO2000053931A1 Rotary helical screw-type compressor |
| 09/14/2000 | WO2000053926A1 Rotary fluid machinery, vane fluid machinery, and waste heat recovery device of internal combustion engine |
| 09/14/2000 | CA2365353A1 Vane and piston type rotary machines |
| 09/12/2000 | US6116877 Gear pump for use in an electrically-operated sealed compressor |
| 09/05/2000 | US6113358 Scroll compressors |
| 08/30/2000 | CN1264793A Rotary compressor |
| 08/23/2000 | EP1029179A1 Hermetic scroll compressor |
| 08/22/2000 | US6106258 High-pressure dome type compressor capable of preventing oil discharge due to gas and of cooling oil by discharge gas |
| 08/22/2000 | US6106254 Closed-type scroll compressor |
| 08/22/2000 | US6106247 Scroll-type fluid displacement apparatus including an eccentric crank mechanism having an elongated shaft |
| 08/16/2000 | CN1055527C Sealed compressor |
| 08/15/2000 | US6102677 Hermetic compressor |
| 08/09/2000 | EP1026403A2 Gas compressor with oil separator |
| 08/09/2000 | EP0771404A4 Refrigeration system and pump therefor |
| 08/08/2000 | US6099267 Stand for a fluid compressor having an extending and rotating movable starter box base plate |
| 08/02/2000 | EP1024290A1 Vacuum pump systems |
| 08/01/2000 | US6095777 Hermetic compressor having an inlet port and/or an outlet port with a sealed connecting member |
| 07/26/2000 | EP1021654A1 Screw vacuum pump provided with rotors |
| 07/26/2000 | EP1021653A1 Cooled screw vacuum pump |
| 07/25/2000 | US6093008 Worm-drive compressor |
| 07/19/2000 | EP1020646A1 Sealed type compressor |
| 07/19/2000 | CN1260447A Exhausting silencing apparatus for air-tight rotary compressor |
| 07/18/2000 | US6089834 Helical compressor and method of assembling the same |
| 07/18/2000 | US6089830 Multi-stage compressor with continuous capacity control |
| 07/11/2000 | US6086343 Sealed compressor mounted between horizontal and vertical |
| 07/05/2000 | CN2386218Y Roots water-ring multi-stage vacuum pump |
| 07/05/2000 | CN1054185C Sealed compressor |
| 07/04/2000 | US6082132 Apparatus having refrigeration cycle |
| 06/29/2000 | DE19957024A1 Multistep root pump for pumping plant, has two pairs of rotors which are individually provided in corresponding pump chambers and sequentially rotate in longitudinal direction |
| 06/27/2000 | US6079952 Continuous capacity control for a multi-stage compressor |
| 06/20/2000 | US6077052 Fluid compressor aftercooler temperature control system and method |
| 06/08/2000 | DE19955262A1 Multi-axle gas compression pump arrangement has parallel shafts with drive rotor and with driven rotor, connected via drive belt to transmit rotary movement |
| 06/08/2000 | DE19953690A1 Fuel cell system has movable spirals of compressor and regenerator symmetrically coupled to opposite ends of motor shaft |
| 06/07/2000 | EP1006281A1 Multi-stage roots pump |
| 06/06/2000 | US6071104 Closed compressor having means for satisfactorily lubricating compression mechanism |
| 06/06/2000 | US6071099 Scroll compressor having a discharge muffler |
| 05/31/2000 | EP1003974A4 Cascaded progressing cavity pump system |
| 05/31/2000 | EP1003974A2 Cascaded progressing cavity pump system |
| 05/31/2000 | CN1254801A Vortex compressor |
| 05/24/2000 | EP1002953A1 Scroll compressor |
| 05/24/2000 | CN1254080A 空调器 Air Conditioner |
| 05/18/2000 | DE19953158A1 Rotation equalizing mechanism for compressor spiral, with leveling weights fitted to traveling crankshafts |
| 05/17/2000 | CN1253239A Oilless lubricating screw type compressor |
| 05/11/2000 | DE19952296A1 Fluid roller machine has fixed component with housing and two fixed roller components mounted at both ends of housing and centered on an axis of housing |
| 05/02/2000 | US6056524 Scroll compressor assembly |
| 05/02/2000 | US6056523 Scroll-type compressor having securing blocks and multiple discharge ports |
| 05/02/2000 | US6056510 Multistage vacuum pump unit |
| 04/27/2000 | DE19848413A1 Combined electric motor-pump unit e.g. for automobile central locking device, has electric motor and air pump contained in separate housings releasably coupled together |
| 04/20/2000 | WO2000022302A1 Scroll-type fluid displacement device for vacuum pump application |
| 04/20/2000 | DE19845993A1 Schraubenverdichter Screw compressor |
| 04/18/2000 | US6050793 Scroll type fluid displacement machine |
| 04/18/2000 | US6050792 Multi-stage scroll compressor |
| 04/13/2000 | WO2000020761A1 Screw-type compressor |
| 04/05/2000 | CN1249403A Bearing lubricating system for vortex type compressor |
| 04/05/2000 | CN1249402A Positive displacement pump |
| 04/05/2000 | CN1249401A Axial compliant cyclic medium pressure chamber with steps for vortex type compressor |
| 04/04/2000 | US6045344 Oil-cooled type screw compressor |
| 03/29/2000 | CN1248688A Heat pump device |
| 03/29/2000 | CN1050879C Scroll compressor and air conditioner using the same |
| 03/28/2000 | US6042346 Refrigerant compressor having an open type refrigerant pool and an oil reservoir |
| 03/22/2000 | EP0987501A2 Air conditioner |
| 03/21/2000 | US6039551 Gear pump for use in an electrically-operated sealed compressor |
| 03/21/2000 | US6039549 Volute compressor |
| 03/16/2000 | DE3745097C2 Hermetisch gekapselte Motor-Kompressor-Einheit Hermetically sealed motor-compressor unit |
| 03/16/2000 | DE3745096C2 Rotationskolbenmaschine nach dem Spiralprinzip Rotary piston machine according to the spiral principle |
| 03/15/2000 | CN1247278A Oldam's coupling of whirl compressor |
| 03/14/2000 | CA2282127A1 Air conditioner |