| Patents for F04C 28 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids (4,928) |
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| 04/06/2004 | US6716007 Variable capacity rotary compressor |
| 04/06/2004 | US6715999 Variable-capacity scroll-type compressor |
| 04/06/2004 | US6715998 Intake regulator for compressed air in a reservoir |
| 04/01/2004 | US20040062670 Scroll compressor |
| 04/01/2004 | DE10243854A1 Verfahren zum Regeln eines Verdichter-und/oder Lüftersatzes A method for controlling a compressor and / or fan unit |
| 03/31/2004 | CN1144006C Heat pump and method for controlling its operation |
| 03/25/2004 | WO2003083311B1 Motor pump |
| 03/24/2004 | EP1400696A1 Method for controlling a set of compressors and/or ventilators |
| 03/24/2004 | EP0997645B1 Scroll type fluid machine |
| 03/24/2004 | CN1143060C 涡旋压缩机 Scroll Compressor |
| 03/23/2004 | US6709244 Diagnostic system for a compressor |
| 03/18/2004 | WO2004022977A1 Speed control for compressors |
| 03/18/2004 | WO2004022974A1 Seal-leak detector arrangement for compressors and other equipment |
| 03/18/2004 | DE10242139A1 Schraubenverdichter Screw compressor |
| 03/18/2004 | DE10115648B4 Zweistufige Schraubenkompressoranlage und Verfahren zu ihrer Steuerung Two-stage screw compressor system and methods for their control |
| 03/18/2004 | CA2494955A1 Seal-leak detector arrangement for compressors and other equipment |
| 03/17/2004 | EP1398507A2 Multistage Roots-type vacuum pump |
| 03/17/2004 | EP1398506A2 Hermetic multistage vacuum pump |
| 03/11/2004 | US20040048131 Seal-leak detector arrangement for compressors and other equipment |
| 03/11/2004 | US20040047755 Vacuum pump |
| 03/10/2004 | EP1396640A2 Screw compressor |
| 03/10/2004 | CN1480695A Refrigerator |
| 03/04/2004 | WO2004018879A1 Vacuum pump and method of starting the same |
| 03/04/2004 | WO2004018878A1 Compressor with capacity control |
| 03/04/2004 | US20040042911 Apparatus for changing capacity of scroll compressor |
| 03/04/2004 | US20040040332 Screw compressor |
| 03/04/2004 | US20040040323 Refrigerating machine |
| 03/03/2004 | EP1394417A2 Rotary vane gas compressor |
| 03/03/2004 | CN1479014A Displacement changing device of vortex compressor |
| 03/02/2004 | US6699023 Multi-stage vacuum pump |
| 02/26/2004 | US20040037727 Pump comprising a water supply |
| 02/26/2004 | US20040037711 Oil free screw compressor |
| 02/26/2004 | US20040037706 Compressor utilizing low volt power tapped from high volt power |
| 02/25/2004 | CN1139728C Sealed compressor driven by motor |
| 02/25/2004 | CN1139727C Power modulated scroll machine |
| 02/24/2004 | US6695600 Scroll compressor |
| 02/19/2004 | DE3745098B4 Kompressor der Spiralbauart Scroll type compressor |
| 02/18/2004 | CN1475673A Turbo machine having dual volume ratio |
| 02/12/2004 | DE19942685B4 Spiralkompressor Scroll compressor |
| 02/11/2004 | EP1387961A1 Multi-stage screw compressor |
| 02/03/2004 | US6685441 Scroll compressor |
| 02/03/2004 | CA2164305C Displacement machine with electronic motor synchronization |
| 01/29/2004 | WO2003083311A3 Motor pump |
| 01/29/2004 | US20040018096 Compressor degradation detection vapor compression system |
| 01/28/2004 | EP1384893A2 Electric motor and hermetic compressor |
| 01/28/2004 | CN1471422A Method for regulating a compressor installation with a dryer and compressor installation used therewith |
| 01/22/2004 | US20040013530 Fluid control apparatus and method |
| 01/21/2004 | EP1382854A2 Dual volume-ratio scroll machine |
| 01/21/2004 | EP1381777A1 Pressure equalization system and method |
| 01/21/2004 | CN1469093A Flow control of extruder |
| 01/20/2004 | US6679683 Dual volume-ratio scroll machine |
| 01/20/2004 | US6679072 Diagnostic system and method for a cooling system |
| 01/15/2004 | WO2003078807A3 Suction oil injection for rotary compressor |
| 01/15/2004 | US20040009083 Variable capacity rotary compressor |
| 01/15/2004 | DE20220578U1 Druckerzeuger für strömende Medien Pressure generator for flowing media |
| 01/15/2004 | DE20220577U1 Druckerzeuger für strömende Medien Pressure generator for flowing media |
| 01/14/2004 | CN1467379A 可变容量的旋转式压缩机 Variable capacity rotary compressor |
| 01/14/2004 | CN1134592C Screw compressor |
| 01/14/2004 | CN1134591C Compressor and air conditioner |
| 01/13/2004 | US6676391 Variable quantity control apparatus for variable radius type scroll compressor |
| 01/08/2004 | US20040005234 Discharge valve for compressor |
| 01/08/2004 | DE3906823B4 Flügel-Vakuumpumpe Wing vacuum pump |
| 01/07/2004 | CN1133855C Air conditioner, outdoor unit and refrigerating unit |
| 01/07/2004 | CN1133813C Vacuum pump |
| 01/06/2004 | US6672846 Capacity modulation for plural compressors |
| 01/06/2004 | US6672845 Apparatus for preventing vacuum compression of scroll compressor |
| 01/02/2004 | EP1376032A2 Expander-compressor capacity control |
| 12/30/2003 | US6669456 Scroll compressor having reversion preventing device |
| 12/24/2003 | CN1462838A 旋转式压缩机 Rotary compressor |
| 12/18/2003 | WO2003104656A1 Compressor protective method and structure |
| 12/17/2003 | EP1371852A2 Hermetic compressor lubrication system |
| 12/17/2003 | EP1371851A2 Scroll type compressor |
| 12/17/2003 | EP1370813A2 Hydristor heat pump |
| 12/16/2003 | US6663358 Compressors for providing automatic capacity modulation and heat exchanging system including the same |
| 12/16/2003 | US6662583 Adaptive control for a cooling system |
| 12/16/2003 | US6662578 Refrigeration system and method for controlling defrost |
| 12/11/2003 | WO2003102422A1 Two-stage rotary screw fluid compressor |
| 12/11/2003 | US20030228235 Scroll type compressor |
| 12/11/2003 | US20030228233 Lubrication of a hermetic carbon dioxide compressor |
| 12/11/2003 | US20030228229 Screw compressor |
| 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 |
| 12/09/2003 | US6659735 Scroll compressor |
| 12/09/2003 | US6659729 Screw compressor equipment for accommodating low compression ratio and pressure variation and the operation method thereof |
| 12/09/2003 | US6659726 Variable speed control of multiple motors |
| 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 |
| 12/04/2003 | US20030223888 Automatic regulator of intake air in a tank |
| 12/03/2003 | EP1367260A2 A vacuum pumping system and method of controlling the same |
| 12/02/2003 | US6655172 Scroll compressor with vapor injection |
| 11/27/2003 | WO2003098048A1 Methods and apparatus for unloading a screw compressor |
| 11/25/2003 | US6652240 Method and control system for controlling multiple throttled inlet rotary screw compressors |
| 11/25/2003 | US6652238 High-pressure dome type compressor |
| 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 |
| 11/20/2003 | US20030215338 Methods and apparatus for unloading a screw compressor |
| 11/20/2003 | US20030215336 Multi-stage screw compressor unit accommodating high suction pressure and pressure fluctuations and method of operation thereof |
| 11/19/2003 | CN1456814A Antivacuum device for vortex compressor |
| 11/19/2003 | CN1456812A Unsymmetric porthole of multirotor screw compressor |