| 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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| 01/27/2004 | US6682328 Multi-stage scroll fluid machine having a seal element between compression sections |
| 01/27/2004 | US6682327 Method of aligning scroll compressor components |
| 01/27/2004 | US6682323 Simplified stamped counterweight |
| 01/27/2004 | US6682322 Air-conditioner for use in an automobile |
| 01/27/2004 | US6681738 Rotary type fluid machine, vane type fluid machine, and waste heat recovering device for internal combustion engine |
| 01/22/2004 | US20040013544 Electric compressor |
| 01/22/2004 | US20040013543 Electric compressor |
| 01/22/2004 | US20040013542 Scroll compressor with vented oil pump |
| 01/21/2004 | EP1382854A2 Dual volume-ratio scroll machine |
| 01/21/2004 | EP1382849A2 Electric compressor |
| 01/21/2004 | EP1382848A2 Motor drive circuit and electric compressor having the same |
| 01/21/2004 | EP1382847A2 Electric compressor |
| 01/21/2004 | CN1469092A Oil-free screw type expansion-compressor |
| 01/21/2004 | CN1469047A Closed compressor |
| 01/21/2004 | CN1135300C Rotary compressor, refrigerating circulation and ice house using the same compressor |
| 01/21/2004 | CN1135297C Scroll compressor |
| 01/20/2004 | US6679690 Scroll compressor including guide frame and compliant frame |
| 01/20/2004 | US6679689 Screw compressor |
| 01/20/2004 | US6679683 Dual volume-ratio scroll machine |
| 01/15/2004 | WO2004005719A1 Compressor |
| 01/15/2004 | US20040009083 Variable capacity rotary compressor |
| 01/15/2004 | US20040009078 Motor drive circuit and electric compressor having the same |
| 01/15/2004 | US20040007526 Water is pressurized and filtered via inverted osmosis, ultafiltration, and/or nanofiltration; |
| 01/15/2004 | US20040007006 On-vehicle air conditioner |
| 01/14/2004 | CN1467379A 可变容量的旋转式压缩机 Variable capacity rotary compressor |
| 01/14/2004 | CN1467377A Rotary compressor and method for manufacturing same and removal volumetric proportions setting method |
| 01/14/2004 | CN1134591C Compressor and air conditioner |
| 01/13/2004 | US6676393 Multi-cylinder rotary compressor |
| 01/13/2004 | US6676385 Compressor assembly |
| 01/13/2004 | US6675765 Rotary type fluid machine, vane type fluid machine, and waste heat recovering device for internal combustion engine |
| 01/08/2004 | US20040005236 Compressor |
| 01/08/2004 | US20040005234 Discharge valve for compressor |
| 01/08/2004 | US20040005229 Electric compressor |
| 01/08/2004 | US20040003593 Steam turbine plant, and method of operating a steam turbine plant |
| 01/07/2004 | EP1378666A1 Hermetic compressor |
| 01/07/2004 | CN1466660A Steam-turbine assembly and a method for operating a steam-turbine assembly |
| 01/07/2004 | CN1133855C Air conditioner, outdoor unit and refrigerating unit |
| 01/06/2004 | US6674046 Screw air compressor for a welder |
| 01/06/2004 | US6672852 Lubricant filling device for scroll compressor |
| 01/06/2004 | US6672846 Capacity modulation for plural compressors |
| 01/06/2004 | US6672845 Apparatus for preventing vacuum compression of scroll compressor |
| 01/06/2004 | US6672101 Electrically driven compressors and methods for circulating lubrication oil through the same |
| 01/06/2004 | US6672065 Multiple stage compressor with rotors using rollers |
| 01/02/2004 | EP1376030A1 Refrigeration cycle with a main compressor and a screw expander-compressor |
| 01/01/2004 | US20040001762 Internal intermediate pressure multistage compression type rotary compressor, manufacturing method thereof and displacement ratio setting method |
| 12/31/2003 | WO2004001230A1 Apparatus for controlling the pressure in a process chamber and method of operating same |
| 12/30/2003 | US6669452 Compressor with built-in motor mounted on engine of mobile structure |
| 12/30/2003 | US6668786 Rotary type fluid machine, vane type fluid machine, and waste heat recovering device for internal combustion engine |
| 12/25/2003 | WO2003106843A1 Scroll compressor |
| 12/24/2003 | CN1463331A Two-stage helical screw compressor |
| 12/24/2003 | CN1462858A Preventer for overload of air conditioner and its method |
| 12/24/2003 | CN1462838A 旋转式压缩机 Rotary compressor |
| 12/24/2003 | CN1131941C Tube assembly of energy-saving device of compressor |
| 12/23/2003 | US6666661 Screw compressor having bearings for the drive shaft of the compressor screw and the motor |
| 12/17/2003 | EP1371852A2 Hermetic compressor lubrication system |
| 12/16/2003 | US6665196 Shielding cover for terminal device of electric appliance and compressor assembly having the same |
| 12/11/2003 | WO2003102422A1 Two-stage rotary screw fluid compressor |
| 12/11/2003 | US20030228233 Lubrication of a hermetic carbon dioxide compressor |
| 12/11/2003 | US20030226360 Heat energy conversion apparatus |
| 12/11/2003 | DE10225774C1 Vacuum pump, for condensing and aggressive gases, is a dry pump with a membrane pump stage and a spiral scroll pump stage |
| 12/10/2003 | EP1369590A2 Two-stage rotary type compressor |
| 12/09/2003 | US6659749 Hermetic compressor and open compressor |
| 12/09/2003 | US6659746 Shaft seal structure of vacuum pumps |
| 12/09/2003 | US6659743 Scroll fluid machine having multistage compressing part |
| 12/09/2003 | US6659738 Composite drive system for compressor |
| 12/09/2003 | US6659227 Oil leak prevention structure for vacuum pump |
| 12/09/2003 | US6658885 Rotary compressor with muffler discharging into oil sump |
| 12/09/2003 | US6658866 Scroll expressor |
| 12/04/2003 | WO2003100258A1 Dual-shaft vacuum pump |
| 12/04/2003 | US20030223900 Rotary compressor |
| 12/04/2003 | US20030223899 Scroll compressor |
| 12/04/2003 | US20030223897 Two-stage rotary screw fluid compressor |
| 12/03/2003 | EP1366297A1 Water-injected screw compressor |
| 12/03/2003 | EP1366293A2 Compressor system |
| 12/03/2003 | CN1459607A Refrigerating circulation and heat pump type hot water supply device |
| 12/02/2003 | US6655172 Scroll compressor with vapor injection |
| 11/27/2003 | WO2003098128A1 Refrigerating machine |
| 11/27/2003 | US20030219349 Simplified stamped counterweight |
| 11/27/2003 | US20030217557 Apparatus for preventing overload of air conditioner and method thereof |
| 11/25/2003 | US6652250 Screw compressor having intermediate shaft bearing |
| 11/25/2003 | US6652240 Method and control system for controlling multiple throttled inlet rotary screw compressors |
| 11/25/2003 | US6651458 Internal intermediate pressure 2-stage compression type rotary compressor |
| 11/20/2003 | WO2003095841A1 Compressed gas production installation and operating method thereof |
| 11/19/2003 | EP1362188A1 Rotary piston machine for compressible media |
| 11/19/2003 | CN1457303A On-vehicle air conditioner |
| 11/19/2003 | CN1456814A Antivacuum device for vortex compressor |
| 11/19/2003 | CN1456813A Sealed rotor duplex compressor and manufacturing method thereof |
| 11/18/2003 | US6648618 Scroll compressor |
| 11/18/2003 | US6648616 Sealed compressor housing with noise reduction features |
| 11/18/2003 | US6648607 Scroll compressor with oil reservoir associated with motor protector |
| 11/18/2003 | US6648604 Short reverse rotation of scroll compressor at startup |
| 11/13/2003 | WO2003093678A1 Vacuum pump and method for generating sub-pressure |
| 11/13/2003 | WO2003093675A1 Compressor having noise reducing apparatus |
| 11/12/2003 | EP1361363A2 Vacuum preventing device of scroll compressor |
| 11/12/2003 | CN1455113A Vacuum-protective device for vortex compressor |
| 11/11/2003 | US6644942 Monobloc housing for vacuum pump |
| 11/11/2003 | US6644931 System for pumping low thermal conductivity gases |
| 11/11/2003 | US6644045 Oil free screw expander-compressor |
| 11/06/2003 | US20030206813 Vacuum preventing device of scroll compressor |
| 11/06/2003 | US20030206812 Vacuum preventing device for scroll compressor |