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

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)
12/2002
12/11/2002	EP1265338A2 Vacuum pump
12/11/2002	CN1095942C Helical impeller compressor
12/11/2002	CN1095941C Vortex copressor
12/11/2002	CN1095940C 涡旋压缩机 Scroll Compressor
12/10/2002	US6491505 Electric air-pump apparatus for motor vehicles
12/10/2002	US6491500 Scroll compressor with motor protector in non-orbiting scroll and flow enhancement
12/05/2002	WO2002097274A2 Vane pump rotor
12/05/2002	US20020182097 Oil leak Prevention Structure for vacuum pump
12/05/2002	US20020182096 Multi-cylinder rotary compressor
12/05/2002	US20020182095 Multi-cylinder rotary compressor
12/05/2002	US20020182094 Scroll compressors
12/05/2002	US20020182092 Lower end cap for scroll compressor
12/05/2002	DE10213256A1 Elektrisch angetriebene Kompressoren und Verfahren zum Umlaufenlassen von Schmieröl durch diese Kompressoren Electrically driven compressors and method for circulating lubricating oil through these compressors
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
12/03/2002	US6488489 Method of aligning scroll compressor components
12/03/2002	US6488480 Housing for screw compressor
11/2002
11/27/2002	EP1259736A2 Vacuum pump aggregate
11/27/2002	CN1381676A Multi-cylinder rotary compressor, its assembly method and its assembly device
11/26/2002	US6485268 Oil utilized as motor protector trip for scroll compressor
11/26/2002	US6484504 Power generation 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	CN1380947A 2-cylinder, 2-stage compression type rotary compressor
11/14/2002	US20020168280 Housing for screw compressor
11/14/2002	US20020166731 Oil leak prevention structure for vacuum pump
11/13/2002	EP1256721A2 Sealing for a rotary vacuum pump
11/13/2002	EP1256720A2 Sealing for a rotary vacuum pump
11/12/2002	US6478560 Parallel module rotary screw compressor and method
11/12/2002	US6478551 Gas compressor having enlarged discharge chamber
11/07/2002	US20020164258 Scroll compressor with unique mounting of non-orbiting scroll
11/07/2002	US20020164256 Shaft axial compliance mechanism
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
11/05/2002	US6474964 Scroll compressor with deflector plate
11/05/2002	US6474087 Method and apparatus for the control of economizer circuit flow for optimum performance
11/04/2002	EP1228315A4 Scroll compressor for natural gas
10/2002
10/31/2002	US20020159907 Screw compressor
10/31/2002	US20020159904 Double-cylinder two-stage compression rotary compressor
10/31/2002	US20020159898 Plural compressors
10/31/2002	US20020157409 Digital scroll condensing unit controller
10/31/2002	DE10204686A1 Scrollkompressor für eine Brennstoffzelle mit einem rund um eine Antriebswelle angeordneten Sperrelement Scroll compressor for a fuel cell with a turn around a drive shaft arranged blocking element
10/30/2002	EP1253324A2 Diagnostic system for a hermetic scroll compressor
10/30/2002	EP1253323A2 Hermetic compressors
10/30/2002	CN1093603C Closed compressor and its manufacturing method
10/29/2002	US6471498 Fluid machinery having stepped spirals with axial pushing means for the moving spiral
10/29/2002	US6471497 Gas supplying device for vacuum pump
10/29/2002	US6471494 Vacuum pumping apparatus
10/29/2002	US6471492 Oil free screw compressor
10/24/2002	US20020155015 Hermetic compressor and open compressor
10/24/2002	US20020155014 Pressure seal for a vacuum pump
10/24/2002	DE10119927A1 Motor-helical/screw- air compressor arrangement, uses two interlocked helical/screw rotors
10/23/2002	EP1251278A2 Scroll decompression device for cryogenic temperatures
10/23/2002	EP1251020A1 Car air conditioner and car with its conditioner
10/23/2002	CN1376252A Multi-stage compression refrigerating device
10/23/2002	CN1376251A Multi-stage compression refrigerating device
10/17/2002	US20020150493 Rotary compressor
10/17/2002	US20020150492 Scroll compressor and scroll-type pressure transformer
10/17/2002	US20020150491 Scroll compressor and scroll-type pressure transformer
10/17/2002	US20020150490 Scroll compressor with anti-reverse rotation clutch
10/17/2002	US20020150489 Rotary vane type vacuum pump rotor
10/17/2002	US20020150484 Monobloc housing for vacuum pump
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	CN1374458A Method for aligning scroll compressor structural components
10/15/2002	US6464481 Scroll compressors
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	US20020146332 Screw compressor with axial thrust balancing and motor cooling device
10/09/2002	EP0714482B2 Vacuum pump with oil separator
10/09/2002	CN1373300A Vortex compressor
10/08/2002	US6461132 Scroll compressor with unique mounting of non-orbiting scroll
10/08/2002	US6461130 Scroll compressor with unique mounting of non-orbiting scroll
10/08/2002	US6461120 Sealed-type electric compressor having refrigerant passage
10/03/2002	US20020141893 Shaft seal structure of vacuum pumps
10/03/2002	US20020141892 Scroll compressor and scroll-type pressure transformer
10/03/2002	US20020140309 Synchronous induction motor and manufacturing method and drive unit for the same, and hermetic electric compressor
10/02/2002	EP1246348A2 Synchronous induction motor and manufacturing method and drive unit for the same, and hermetic electric compressor
10/02/2002	DE10160722A1 Spiralverdichter und Verfahren zum Herstellen desselben The same scroll compressor and method of manufacturing
10/01/2002	US6457960 Excellent wear resistance and high reliability; using hydrocarbon refrigerant and mineral oil or synthetic oil.
10/01/2002	US6457948 Diagnostic system for a compressor
10/01/2002	US6457562 Lower bearing mount for sealed compressor
09/2002
09/26/2002	WO2002044562A3 Hermetic compressor
09/26/2002	US20020136653 Scroll compressors and methods for circulating lubrication oil through the same
09/26/2002	US20020136652 Electrically driven compressors and methods for circulating lubrication oil through the same
09/26/2002	US20020136651 Weld strengthening component for sealed compressors
09/26/2002	US20020136648 Loose lamina motor stator
09/26/2002	US20020136647 Screw compressor
09/26/2002	US20020134101 Electrically driven compressors and methods for circulating lubrication oil through the same
09/26/2002	DE10200378A1 Gerät und Verfahren zum Steuern eines elektrischen Verdichters Apparatus and method for controlling an electric compressor
09/25/2002	EP1243795A1 A two-stage vacuum pump
09/25/2002	CN1371453A Internal intermediate pressure 2-stage compression type rotary compressor
09/25/2002	CN1371452A Closed motor-driven compressor
09/25/2002	CN1370930A 旋转压缩机 Rotary compressor
09/24/2002	US6454550 Weld strengthening component for sealed compressors
09/24/2002	US6454538 Motor protector in pocket on non-orbiting scroll and routing of wires thereto
09/24/2002	CA2275816C Bearing lubrication system for a scroll compressor

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