| Patents for F04C 18 - Rotary-piston pumps specially adapted for elastic fluids (19,462) |
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| 05/14/2002 | US6385981 Capacity control of refrigeration systems |
| 05/09/2002 | US20020054823 Compressor with oil-mist separator |
| 05/09/2002 | US20020054821 Scroll compressor |
| 05/08/2002 | DE10115648A1 Zweistufige Schraubenkompressoranlage und Verfahren zu ihrer Steuerung Two-stage screw compressor system and methods for their control |
| 05/08/2002 | DE10053932A1 Rotary cylinder vacuum pump with torque-generating drive connected directly to rotary cylinder via cylinder shaft |
| 05/08/2002 | CN1348064A Vortex machine with continuous power regulation |
| 05/08/2002 | CN1348019A Manganese oxide layer forming method and vane for vane compressor |
| 05/08/2002 | CN1084441C Vortex compressor with backpressure cavity sealing device |
| 05/07/2002 | US6382941 Device and method to prevent misbuild and improper function of air conditioning scroll compressor due to misplaced or extra steel spherical balls |
| 05/07/2002 | US6382930 Screw vacuum pump provided with rotors |
| 05/02/2002 | US20020051722 Screw compressor |
| 05/02/2002 | US20020051719 Scroll compressor suitable for a low operating pressure ratio |
| 05/02/2002 | US20020051709 Oil free screw compressor operating at variable speeds and control method therefor |
| 05/02/2002 | EP1201927A2 Vacuum pump |
| 05/02/2002 | DE10147464A1 Motorbetriebener Kompressor The motor-driven compressor |
| 05/02/2002 | DE10147339A1 Spiralverdichter und Gasverdichtungsverfahren Scroll compressor and gas compression method |
| 05/02/2002 | DE10060996C1 Apparatus, for evacuating foodstuff container with a closure valve, is an attachment for a conventional electrical kitchen appliance, to drive a vacuum vane pump |
| 05/01/2002 | CN2489117Y Horizontal box-opening multistage double-claw type rotor oil-free vacuum pump |
| 05/01/2002 | CN2489116Y Roots blower with double circular arc impeller |
| 05/01/2002 | CN2489115Y Dry-type vacuum pump |
| 05/01/2002 | CN1083945C 回转式压缩机 Rotary Compressor |
| 05/01/2002 | CN1083944C Fluid compressor |
| 04/30/2002 | US6379135 Vacuum pumps |
| 04/30/2002 | US6379134 Scroll compressor having paired fixed and moveable scrolls |
| 04/30/2002 | US6379133 Scroll compressor with reduced stiction surface for check valve |
| 04/30/2002 | US6379131 Scroll type compressor |
| 04/30/2002 | US6379123 Capacity control scroll compressor |
| 04/30/2002 | CA2252477C Multiple pressure axial bias means for a scroll compressor |
| 04/25/2002 | WO2002033262A1 Multi-stage helical screw rotor |
| 04/25/2002 | WO2002033261A1 Fluid compressor and refrigerating machine having the fluid compressor |
| 04/25/2002 | WO2002033238A1 Fluid power transfer device |
| 04/25/2002 | US20020048524 Multi-stage helical screw rotor |
| 04/25/2002 | US20020048523 Rotary helical screw-type compressor |
| 04/25/2002 | US20020048522 Scroll compressor |
| 04/25/2002 | US20020048521 Rotary helical screw-type compressor |
| 04/25/2002 | US20020047391 Hermetic motor compressor and method assembling the same |
| 04/25/2002 | DE10046902A1 Pumping plant for pumping of gas has displacement pump with first and second pump stages in series, each stage having inlet and outlet, and for cooling of compressed gas a cooling pipe is provided for cooling unit |
| 04/25/2002 | CA2426179A1 Fluid power transfer device |
| 04/24/2002 | EP1199476A2 Vacuum pump |
| 04/24/2002 | EP1199475A2 Vacuum pump |
| 04/24/2002 | EP1199474A2 Scroll compressor |
| 04/24/2002 | EP1199473A2 Scroll fluid machine |
| 04/24/2002 | CN1346019A Flexible swing rotary compressor |
| 04/24/2002 | CN1083537C 油冷式螺旋压缩机 Oil-cooled screw compressor |
| 04/23/2002 | US6375444 Axial pressure seal lubricator |
| 04/23/2002 | US6375443 Screw rotor type wet vacuum pump |
| 04/23/2002 | US6375431 Evacuating apparatus |
| 04/23/2002 | US6374621 Refrigeration system with a scroll compressor |
| 04/18/2002 | WO2002030726A1 Vacuum pump for a servosystem in a motor vehicle |
| 04/18/2002 | US20020044876 Screw compressor |
| 04/18/2002 | US20020043238 Wobble engine |
| 04/17/2002 | EP1197661A1 Scroll machine with continuous capacity modulation |
| 04/17/2002 | CN1344866A Screw compressor and its running method |
| 04/17/2002 | CN1344865A Positive displacement fluid machinery |
| 04/17/2002 | CN1344864A Closed electric compressor |
| 04/17/2002 | CN1083065C 涡旋压缩机 Scroll Compressor |
| 04/16/2002 | US6371745 Pivoting vane rotary compressor |
| 04/16/2002 | US6371744 Dry screw vacuum pump having spheroidal graphite cast iron rotors |
| 04/16/2002 | US6371739 Method and apparatus for applying pre-load to the bearing structure of a drive shaft that is directly driven by an electric motor |
| 04/11/2002 | US20020041817 Pressure adjuster valve and gas compressor using the same |
| 04/11/2002 | DE10046768A1 Screw vacuum pump with bypass valve has through aperture of such dimensions that valve closing piece does not contact valve seat during beginning of evacuating phase |
| 04/11/2002 | DE10046697A1 Flügel aus Kunststoff für eine Flügelzellen-Vakuumpumpe Wings made of plastic for a vane vacuum pump |
| 04/10/2002 | EP1195541A1 A gear and a fluid machine with a pair of gears |
| 04/10/2002 | EP1195526A1 2-cylinder, 2-stage compression type rotary compressor |
| 04/10/2002 | EP1195525A2 Scroll compressor |
| 04/10/2002 | CN1082626C Dry screw fluid machine |
| 04/09/2002 | US6368091 Screw rotor for vacuum pumps |
| 04/09/2002 | US6368090 Automotive vane pump for generating anti-centrifugal force |
| 04/09/2002 | US6368088 Scroll compressor with back pressure regulation mechanism |
| 04/09/2002 | US6368087 Scroll-type fluid displacement apparatus having spiral start portion with thick base and thin tip |
| 04/09/2002 | US6368065 Linear drive scroll compressor assemble |
| 04/04/2002 | US20020039541 Scroll compressor for introducing high-pressure fluid to thrust-face sude so as to decrease thrust load imposed on revolving scroll |
| 04/04/2002 | US20020039540 Scroll type compressor and method for compressing gas |
| 04/04/2002 | US20020039539 Scroll compressors |
| 04/04/2002 | US20020039534 Scroll compressor having an electric motor incorporated |
| 04/04/2002 | US20020039532 Motor-driven compressors |
| 04/04/2002 | US20020038555 Rotating compressor |
| 04/03/2002 | EP1193835A2 Scroll compressors |
| 04/03/2002 | EP1193396A2 Automotive vane-type vacuum pump |
| 04/03/2002 | CN2484419Y Vortex compressor |
| 04/03/2002 | CN1082150C Refrigerating circulation with foreign matter collector |
| 04/03/2002 | CN1082149C Roots pump returning cold air back at multiplized speed |
| 04/03/2002 | CN1082148C Vortex disk of vortex-type refrigerating compressor |
| 04/03/2002 | CN1082146C Vortex type fluid machinery |
| 04/02/2002 | US6364645 Screw compressor having a compressor screw housing and a spaced outer housing |
| 04/02/2002 | US6364644 Scroll-type fluid displacement apparatus |
| 04/02/2002 | US6364643 Scroll compressor with dual suction passages which merge into suction path |
| 04/02/2002 | US6364642 Rotary piston machine with three-blade rotors |
| 04/02/2002 | US6364619 Sealed compressor with temperature feedback to motor protector unit |
| 03/28/2002 | WO2002025115A1 Multi-stage screw compressor |
| 03/28/2002 | WO2002025113A1 Plastic vane for a vane-cell vacuum pump |
| 03/28/2002 | WO2001061151B1 Equipment with mutually interacting spiral teeth |
| 03/28/2002 | US20020037230 Axial unloading lift valve for a compressor and method of making the same |
| 03/28/2002 | US20020037229 Wear-preventing and positioning device for a screw compressor |
| 03/28/2002 | US20020035839 Valve arrangement for a compressor |
| 03/27/2002 | CN1342247A 涡卷型压缩机 Scroll compressor |
| 03/27/2002 | CN1342243A Positive-displacement piston mechanism of rotary piston structure |
| 03/27/2002 | CN1341812A Rotary compressor assembly with improved shock-absorbing property |
| 03/27/2002 | CN1341811A Swinging piston compressor and piston manufacturing method |
| 03/27/2002 | CN1341810A Vortex compressor |