Patents
Sitemap › F04 - Positive-displacement machines for liquids; Pumps for liquids or elastic fluids › F04C - Rotary-piston, or oscillating-piston, positive-displacement machines for liquids; Rotary-piston, or oscillating-piston, positive-displacement pumps › 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)
08/2003
08/14/2003US20030152467 Hybrid compressor
08/14/2003US20030150223 Scroll expressor
08/13/2003EP1335133A2 Two-stage compressors
08/13/2003CN1435572A 多气缸压缩机 Multi-cylinder compressor
08/13/2003CN1117929C Rotary compressor
08/13/2003CN1117927C Scroll compressor
08/12/2003US6604371 Oil amount detector, refrigeration apparatus and air conditioner
08/07/2003WO2003064859A1 Closed compressor
08/07/2003US20030147763 Air supply apparatus
08/07/2003US20030147762 Orbiting rotary compressor
08/06/2003EP1333179A2 Scroll compressor
08/06/2003CN1434216A Scrool compressor with vapour injection
08/06/2003CN1433861A Method for producing sintered metal and rotary type compressor flange produced by said method
08/05/2003US6601397 Digital scroll condensing unit controller
07/2003
07/31/2003US20030143090 Electrical compressor
07/30/2003EP1331397A2 Scroll compressor
07/30/2003EP1331396A2 Scroll compressor with vapor injection
07/30/2003EP1330604A2 Steam-turbine assembly and a method for operating a steam-turbine assembly
07/30/2003CN1116521C Rotary compressor assembly with improved shock-absorbing property
07/30/2003CN1116519C Oil-cooled type compressor
07/29/2003US6599104 Motor-driven compressors
07/29/2003US6599100 Closed type motor-operated compressor
07/29/2003US6599094 Screw compressor system and operating method thereof
07/24/2003WO2003060324A1 Compressor having vibration reducing structure
07/24/2003US20030138341 Kneading metal powder, pressure molding, sintering, subzero treating powder for predetermined time and tempering resulting powder under compression residual stress; rotary compressor flange
07/24/2003US20030136145 Scroll compressor with vapor injection
07/23/2003CN1431403A Enclosed rotary compressor and freezing air conditioning unit
07/23/2003CN1431399A Vacuum preventer for vortex compressor
07/23/2003CN1115485C Hermetic compressor
07/22/2003US6595761 Screw compressor
07/17/2003US20030133818 Assembly method for hermetic scroll compressor
07/17/2003US20030133817 Multi-stage vacuum pump
07/17/2003US20030133809 Hybrid compressor apparatus
07/17/2003US20030133806 Compressor utilizing low volt power tapped from high volt power
07/16/2003CN1430705A Compressor
07/16/2003CN1429991A Compressor with sound-proof casing
07/15/2003US6592347 Rotary compressor
07/15/2003US6592344 Press-on insulator dish
07/10/2003WO2003056183A1 Compressor and overload protecting apparatus
07/10/2003WO2003056181A1 Vane of compressor
07/10/2003US20030129072 Sealed compressor housing with noise reduction features
07/10/2003US20030129066 Vacuum preventing device for scroll compressor
07/10/2003US20030126885 Multistage compressor
07/09/2003CN1429180A Pumping arrangement for household water purifier
07/08/2003US6589035 Scroll compressor having a valved back-pressure chamber and a bypass for over-compression
07/08/2003US6589033 Unitary sliding vane compressor-expander and electrical generation system
07/08/2003US6589026 Fluid machinery having a helical mechanism with through holes for ventilation
07/08/2003CA2306880C Hermetic scroll compressor
07/03/2003WO2003054391A1 Suction mechanism of rotary compressor
07/03/2003US20030124011 Dry vacuum pump
07/02/2003CN1113204C Air conditioner adopting volute compressor
07/01/2003US6585496 Self-regulating oil reservoir for scroll compressor
06/2003
06/27/2003CA2415223A1 Orbiting rotary compressor
06/26/2003US20030115900 Rotary compressor, method for manufacturing the same, and defroster for refrigerant circuit
06/25/2003EP1321674A2 Compressor with sound insulation case
06/25/2003CN1426509A Multiple induction encrgy-driven engine
06/25/2003CN1112518C Exhausting silencing apparatus for air-tight rotary compressor
06/25/2003CN1112514C Vortex compressor
06/24/2003US6582211 Discharge valve
06/24/2003US6582210 Scroll compressor having a compliant frame and a guide frame for the orbiting scroll
06/24/2003US6582207 Motor compressor and cooling apparatus using the same
06/24/2003US6581408 Multi-stage compression refrigerating device
06/19/2003US20030113214 Pressure ratio modulation for a two stage oil free compressor assembly
06/18/2003CN1111652C Oil-free scroll compressor
06/17/2003US6579076 Shaft load balancing system
06/12/2003WO2003048583A1 Power generating device
06/12/2003WO2003048581A1 Vane supporting apparatus for hermetic compressor
06/12/2003WO2003047894A1 Air conditioner
06/12/2003US20030108438 Compressor
06/12/2003US20030106330 Defroster of refrigerant circuit and rotary compressor
06/11/2003CN1423056A Closed revolving compressor
06/11/2003CN1423055A Revolving compressor, its manufacturing method and defrosting device using said compressor
06/05/2003WO2002097274A3 Vane pump rotor
06/04/2003EP1316730A2 Rotary compressor
06/04/2003EP1316725A1 Rotary fluid machinery
06/04/2003EP1316724A1 Rotary fluid machinery
06/04/2003CN1422364A Motor protector on non-orbiting scroll
06/03/2003US6572354 Screw compressor having a shaft seal near a bearing
06/03/2003US6572352 Two-piece powdered metal suction fitting
06/03/2003US6572351 Pressure seal for a vacuum pump
06/03/2003US6572350 Screw compressor
06/03/2003US6571561 Power generation system
05/2003
05/30/2003WO2003044373A1 Hermetic compressor
05/30/2003WO2003044371A1 Compressor with z-plate
05/30/2003WO2003044370A1 Vane supporting apparatus for hermetic compressor
05/29/2003US20030099564 Press-on insulator dish
05/28/2003DE20200839U1 Two-stage liquid ring pump is built in block construction, with pump casing flanged directly on drive motor of bearing pedestal, and with second working chamber rotationally offset in relation to first working chamber
05/28/2003CN1420967A 压缩机 Compressor
05/28/2003CN1420966A 涡旋压缩机 Scroll Compressor
05/28/2003CN1420965A Scroll compressor
05/28/2003CN1420964A Multi-stage compressor
05/28/2003CN1420330A Defrosting device of refrigerant loop and rotary compressor for refrigerant loop
05/27/2003US6568928 Scroll-type compressor
05/27/2003US6568198 Multi-stage compression refrigerating device
05/27/2003US6568197 Refrigerating unit
05/22/2003WO2003042542A1 Tempering method for a screw-type vacuum pump
05/22/2003WO2003042541A1 Cooled screw-type vacuum pump
05/22/2003WO2003042540A1 Check valve of scroll compressor
05/22/2003CA2463957A1 Cooling method for a screw-type vacuum pump
05/22/2003CA2463617A1 Cooled screw-type vacuum pump
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