| 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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| 01/28/2003 | US6511295 Compressors |
| 01/23/2003 | WO2003006831A1 Water-injected screw compressor |
| 01/23/2003 | US20030017058 Scroll compressors |
| 01/23/2003 | US20030017054 Electric compressor and control method therefor |
| 01/22/2003 | EP1277959A2 Electric compressor and control method therefor |
| 01/22/2003 | EP1060335B1 Scroll compressor with combined pressure ratio and pressure differential relief valve |
| 01/21/2003 | US6508268 Vacuum pressure control apparatus |
| 01/16/2003 | US20030012674 Oil free screw compressor |
| 01/16/2003 | US20030012663 Scroll compressor with oil reservoir associated with motor protector |
| 01/16/2003 | US20030012659 Dual volume-ratio scroll machine |
| 01/14/2003 | US6505480 Air-conditioner, outdoor unit and refrigeration unit |
| 01/09/2003 | US20030007873 Screw compressor equipment for accommodating low compression ratio and pressure variation and the operation method thereof |
| 01/02/2003 | US20030002992 Oil utilized as motor protector trip for scroll compressor |
| 01/02/2003 | EP1270947A2 Scroll compressors |
| 01/02/2003 | EP1268979A2 Scroll compressor |
| 12/31/2002 | US6499504 Control system for controlling multiple compressors |
| 12/31/2002 | US6499305 Adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor |
| 12/26/2002 | US20020197172 Scroll compressor with motor control for capacity modulation |
| 12/26/2002 | US20020194858 Hybrid compressor |
| 12/25/2002 | CN1387312A 逆变器装置 Inverter means |
| 12/25/2002 | CN1097173C Scroll-type compressor |
| 12/24/2002 | US6497554 Fail safe electronic pressure switch for compressor motor |
| 12/19/2002 | WO2002101242A2 Compressor with a capacity modulation system utilizing a re-expansion chamber |
| 12/18/2002 | CN1385659A Digital volute condensation unit controller |
| 12/17/2002 | US6494699 Axial unloading lift valve for a compressor and method of making the same |
| 12/17/2002 | US6494688 Force-fit scroll compressor components |
| 12/12/2002 | US20020187057 Compressors for providing automatic capacity modulation and heat exchanging system including the same |
| 12/12/2002 | US20020187050 Compressor with a capacity modulation system utilizing a re-expansion chamber |
| 12/11/2002 | CN1384290A Compressor diagnosing system |
| 12/10/2002 | US6491500 Scroll compressor with motor protector in non-orbiting scroll and flow enhancement |
| 12/10/2002 | US6490882 Method and apparatus for maintaining compressor discharge vapor volume for starting with condensing unit ambient temperatures less than evaporator unit ambient temperatures |
| 12/05/2002 | US20020182082 System and methods for controlling rotary screw compressors |
| 12/05/2002 | US20020178741 Pressure equalization system and method |
| 12/05/2002 | US20020178737 Adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor |
| 12/04/2002 | CN1383472A Scrawl compressor |
| 12/04/2002 | CN1382912A Diagnostic system of compressor |
| 12/04/2002 | CN1382911A 复合压缩机 Composite compressor |
| 11/27/2002 | CN1095039C Scroll compressors with inverse rotation protector |
| 11/26/2002 | US6485268 Oil utilized as motor protector trip for scroll compressor |
| 11/26/2002 | US6484522 Screw compressor for refrigerating apparatus |
| 11/21/2002 | WO2002093015A1 Method for safeguarding an appliance |
| 11/21/2002 | US20020172599 Multishaft electric motor and positive-displacement pump combined with such multishaft electric motor |
| 11/21/2002 | US20020170606 Method and control system for controlling multiple compressors |
| 11/21/2002 | US20020170299 Compressor diagnostic system |
| 11/20/2002 | CN1380963A Control system of degree of superheat of air conditioner and ocntrol method thereof |
| 11/20/2002 | CN1380960A Control system for starting of air conditioner and control method thereof |
| 11/20/2002 | CN1380959A System for controlling starting of air conditioner and control method thereof |
| 11/20/2002 | CN1094566C 多级容量控制涡旋压缩机 Multi-stage capacity-controlled scroll compressor |
| 11/13/2002 | EP1256726A1 Method and apparatus for continuous prediction, monitoring and control of compressor health via detection of precursors to rotating stall and surge |
| 11/12/2002 | US6478560 Parallel module rotary screw compressor and method |
| 11/12/2002 | US6478550 Multi-stage capacity-controlled scroll compressor |
| 11/07/2002 | US20020164254 Oil-cooled type compressor |
| 11/07/2002 | DE19882987C2 Vakuumpumpe Vacuum pump |
| 11/07/2002 | DE10215207A1 Motorgetriebener Kompressor und Verfahren zum Zusammenbau eines motorgetriebenen Kompressors Motor-driven compressor and method for assembling a motor-driven compressor |
| 11/06/2002 | CN1378620A 天然气涡卷压缩机 Gas scroll compressor |
| 11/06/2002 | CN1378320A Compressor diagnosis system |
| 11/05/2002 | US6474953 Compressor control system and method for controlling the same |
| 11/05/2002 | US6474950 Oil free dry screw compressor including variable speed drive |
| 11/04/2002 | EP1228315A4 Scroll compressor for natural gas |
| 10/31/2002 | US20020161550 Method and apparatus for continuous prediction, monitoring and control of compressor health via detection of precursors to rotating stall and surge |
| 10/31/2002 | US20020159898 Plural compressors |
| 10/31/2002 | US20020159890 High-pressure dome type compressor |
| 10/31/2002 | US20020157409 Digital scroll condensing unit controller |
| 10/31/2002 | US20020157408 Air conditioning systems and methods for operating the same |
| 10/30/2002 | EP1253324A2 Diagnostic system for a hermetic scroll compressor |
| 10/30/2002 | EP1253323A2 Hermetic compressors |
| 10/29/2002 | US6471492 Oil free screw compressor |
| 10/24/2002 | US20020155007 Intake regulator for compressed air in a reservoir |
| 10/24/2002 | EP1025403A4 An adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor |
| 10/24/2002 | DE10119927A1 Motor-helical/screw- air compressor arrangement, uses two interlocked helical/screw rotors |
| 10/23/2002 | EP1251280A1 Intake control valve for an air compressor |
| 10/22/2002 | US6467280 Adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor |
| 10/22/2002 | CA2270262C Scroll-type compressor |
| 10/17/2002 | WO2002081924A1 Pressure equalization system and method |
| 10/17/2002 | WO2002081923A1 Pressure equalisation system and method |
| 10/17/2002 | US20020150490 Scroll compressor with anti-reverse rotation clutch |
| 10/17/2002 | DE10117790A1 Kompressoranlage und Verfahren zum Betreiben einer Kompressoranlage Compressor system and method of operating a compressor system |
| 10/16/2002 | EP1249603A2 Compressor system and control method therefor |
| 10/16/2002 | CN1092764C Closed rotary compressor |
| 10/15/2002 | US6464470 Scroll compressor with variable discharge port |
| 10/15/2002 | US6464467 Involute spiral wrap device |
| 10/10/2002 | US20020146335 Motor-driven compressors and methods of assembling motor-driven compressors |
| 10/10/2002 | US20020144511 Pressure equalization system and method |
| 10/09/2002 | EP0714482B2 Vacuum pump with oil separator |
| 10/09/2002 | CN1373298A 气体压缩机 Gas compressor |
| 10/08/2002 | US6461131 Radial compliance scroll compressor |
| 10/08/2002 | US6461119 Lift valve for a rotary screw compressor |
| 10/08/2002 | US6461112 Screw compression apparatus and operation control method thereof |
| 10/03/2002 | US20020141877 Compressor diagnostic system |
| 10/03/2002 | US20020140309 Synchronous induction motor and manufacturing method and drive unit for the same, and hermetic electric compressor |
| 10/03/2002 | US20020139137 Method and apparatus for maintaining compressor discharge vapor volume for starting with condensing unit ambient temperatures less than evaporator unit ambient temperatures |
| 10/02/2002 | EP1246348A2 Synchronous induction motor and manufacturing method and drive unit for the same, and hermetic electric compressor |
| 10/02/2002 | EP1245913A1 Compressor diagnostic system |
| 10/02/2002 | EP1245912A2 Compressor diagnostic system |
| 10/02/2002 | DE10113251A1 Druckerzeuger für strömende Medien Pressure generator for flowing media |
| 10/02/2002 | DE10113249A1 Druckerzeuger für strömende Medien Pressure generator for flowing media |
| 10/02/2002 | CN1091848C Screw-type compressor with liquid locking release device |
| 10/02/2002 | CN1091846C Scroll machine with capacity modulation |
| 10/01/2002 | US6457948 Diagnostic system for a compressor |
| 10/01/2002 | CA2255359C Scroll-type compressor and operation method therefor |