F04C 18 - Rotary-piston pumps specially adapted for elastic fluids

Patents for F04C 18 - Rotary-piston pumps specially adapted for elastic fluids (19,462)
12/2002
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
12/10/2002	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	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	US20020182093 Scroll compressor
12/05/2002	US20020178737 Adaptive control for a refrigeration system using pulse width modulated duty cycle 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	EP1262665A1 Scroll compressor
12/04/2002	EP0842363B1 Spiral compressor, useful in particular to generate compressed air for rail vehicles
12/04/2002	CN1383473A Scrawl 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
12/03/2002	US6488489 Method of aligning scroll compressor components
12/03/2002	US6488488 Rotary helical screw-type compressor having an intake filter and muffler
11/2002
11/28/2002	WO2002095258A1 Spring having a high natural frequency and a low spring rate
11/27/2002	EP1260713A2 Scroll compressor with Oldham coupling
11/27/2002	EP1260570A1 Methods and apparatus for preventing degradation of electrical insulation properties within air conditioning circuits
11/27/2002	EP1259736A2 Vacuum pump aggregate
11/27/2002	CN1382244A Variable volume device and system therefor
11/27/2002	CN1381676A Multi-cylinder rotary compressor, its assembly method and its assembly device
11/27/2002	CN1095040C Positive displacement machine
11/27/2002	CN1095039C Scroll compressors with inverse rotation protector
11/26/2002	US6485279 Thrust load reliever
11/26/2002	US6485274 Displacement machine for compressible media
11/26/2002	US6485268 Oil utilized as motor protector trip for scroll compressor
11/26/2002	US6484522 Screw compressor for refrigerating apparatus
11/26/2002	US6484504 Power generation system
11/21/2002	WO2002068824A3 Scroll type compressor apparatus with adjustable axial gap and bimetallic orbital scroll
11/21/2002	US20020172612 Compressor having cooling passage integrally formed therein
11/21/2002	US20020170299 Compressor diagnostic system
11/21/2002	DE10219125A1 Kompressor mit einem Kühldurchgang, der in diesem integriert ausgebildet ist Compressor with a cooling passage that is formed in this integrated
11/21/2002	DE10123916A1 Hollow rotor for mechanically driven supercharger has auxiliary air intakes for endface air intakes with relatively small passage cross section
11/20/2002	EP1257731A1 Equipment with mutually interacting spiral teeth
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
11/20/2002	CN1094567C Fluid compressor
11/20/2002	CN1094566C 多级容量控制涡旋压缩机 Multi-stage capacity-controlled scroll compressor
11/19/2002	US6481410 Rotary piston engine/positive displacement apparatus
11/14/2002	US20020168279 Shaft seal structure of vacuum pumps
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
11/13/2002	EP0842362B1 Spiral compressor, useful in particular to generate compressed air for rail vehicles
11/13/2002	CN1094174C 带逆流装置的多叶型叶轮正（负）压罗茨风机结构 Multi-leaf type impeller with countercurrent device positive (negative) pressure blower structure
11/12/2002	US6478560 Parallel module rotary screw compressor and method
11/12/2002	US6478558 Oscillating piston type compressor and method of manufacturing piston thereof
11/12/2002	US6478557 Scroll compressor suitable for a low operating pressure ratio
11/12/2002	US6478556 Asymmetric scroll compressor
11/12/2002	US6478551 Gas compressor having enlarged discharge chamber
11/12/2002	US6478550 Multi-stage capacity-controlled scroll compressor
11/07/2002	WO2002088525A1 Rotary compressor
11/07/2002	US20020164258 Scroll compressor with unique mounting of non-orbiting scroll
11/07/2002	US20020164256 Shaft axial compliance mechanism
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	CN2519859Y Vortex compressor
11/06/2002	CN1378620A 天然气涡卷压缩机 Gas scroll compressor
11/06/2002	CN1378320A Compressor diagnosis system
11/06/2002	CN1378043A Slide sheet type gas compressor with load discharge ring structure
11/05/2002	US6474964 Scroll compressor with deflector plate
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
11/05/2002	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	DE10216825A1 Giessvorrichtung und Herstellungsverfahren für ein Spiralelement Casting apparatus and manufacturing method of a spiral element
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	EP1252444A1 Drive mechanism for a screw pump
10/30/2002	CN1376864A Turbocompressor
10/30/2002	CN1093605C Noise reducing structure for hermetically sealed compressor
10/30/2002	CN1093604C Rotary fluid conveying machine
10/30/2002	CN1093602C Floatation stopping device for closed compressor
10/29/2002	US6471499 Scroll compressor with lubrication directed to drive flat surfaces
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	US6471492 Oil free screw compressor
10/24/2002	WO2002084123A1 Vane structure for compressor
10/24/2002	US20020155015 Hermetic compressor and open compressor
10/24/2002	US20020155014 Pressure seal for a vacuum pump
10/24/2002	EP1025403A4 An adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor
10/24/2002	DE10216812A1 Schneckenkompressoren Screw compressors
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
10/23/2002	CN1375635A Oil jet for vortex type compressor
10/23/2002	CN1093229C Rotary compressor with discharge chamber pressure relief groove
10/22/2002	US6467287 Valve arrangement for a compressor

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