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)
11/2003
11/06/2003US20030206809 Method for creating an air pressure
11/06/2003US20030206808 Method for creating an air pressure
11/06/2003US20030205945 Electric motor
11/06/2003US20030205213 Compressor assembly
11/05/2003EP1359324A2 Sealed type compressor
11/05/2003EP1359323A1 Scroll compressor
11/05/2003EP1359033A1 Air conditioner
11/05/2003EP1358408A1 Horizontal scroll compressor
11/05/2003CN1126871C Compressor assembly with positive displacement pump capable of rotating oppositely
11/04/2003US6641379 Load bearing ribs for fixed scroll
11/04/2003US6641370 Vacuum pump apparatus having improved sealing structure
11/04/2003US6641368 Compressor utilizing low volt power tapped from high volt power
10/2003
10/30/2003WO2003089793A1 Structure for reducing refrigerant flow loss in compressor
10/30/2003WO2003089790A1 Reversible pivoting vane rotary compressor for a valve-free oxygen concentrator
10/30/2003WO2003036094A3 Vacuum pump
10/30/2003US20030202886 Vacuum preventing device for scroll compressor
10/29/2003EP1276993A4 Compressor
10/29/2003CN1452696A Rotary fluid machinery
10/29/2003CN1452694A Rotary fluid machinery
10/28/2003US6638040 Dry vacuum pump
10/28/2003US6638030 Oil free screw compressor
10/28/2003US6638029 Pressure ratio modulation for a two stage oil free compressor assembly
10/28/2003US6637222 System for controlling starting of air conditioner and control method thereof
10/28/2003US6637216 Compressor with internal accumulator for use in split compressor
10/23/2003US20030198566 Load bearing ribs for fixed scroll
10/22/2003EP1354136A1 Refrigeration compressor with magnetic coupling
10/21/2003US6634874 Scroll compressor with anti-reverse rotation clutch
10/16/2003WO2003085334A1 Improvement for multi-coupled heat pump system
10/16/2003US20030194330 Short reverse rotation of compressor at startup
10/15/2003CN1124416C Fluid compressor and air conditioner
10/14/2003US6631617 Two stage hermetic carbon dioxide compressor
10/09/2003WO2003083311A2 Motor pump
10/09/2003WO2003083309A1 Compressor
10/09/2003WO2003083308A1 Rotary compressor
10/09/2003WO2003083302A1 High-low pressure dome type compressor
10/09/2003US20030190248 Vane supporting apparatus for hermetic compressor
10/09/2003US20030190247 Scroll compressor
10/08/2003CN1447081A Vortex machinery with liquid injection
10/08/2003CN1447029A Swirl compressor
10/07/2003US6629825 Integrated air compressor
10/01/2003EP1348870A2 Fuel gas compression system
10/01/2003EP1348077A1 Refrigeration compressor
10/01/2003CN1445460A 卧式旋转压缩机 Horizontal rotary compressor
10/01/2003CN1445459A 真空泵 Vacuum pump
09/2003
09/30/2003US6626652 Motor-driven compressors and methods of assembling motor-driven compressors
09/30/2003US6626646 Vehicle mounted gas well pumping unit
09/30/2003CA2275789C Positive displacement pump
09/25/2003WO2003078842A1 Rotary compressor
09/25/2003WO2003030296A3 Rotor for vane pump
09/25/2003US20030180153 Vacuum pump
09/25/2003US20030180150 Oil free screw compressor operating at variable speeds and control method therefor
09/24/2003EP1347177A2 Horizontal compressor
09/24/2003EP1347176A2 Vacuum pump
09/24/2003CN1443943A Multi-stage compressive rotary compressor and refrigerant return device
09/23/2003US6623253 Compressor
09/20/2003WO2001069061A1 Multiple induction energy-driven engine
09/18/2003WO2003076808A1 Scroll type fluid machine
09/18/2003US20030175140 Horizontal compressor
09/18/2003US20030172666 Multistage rotary compressor and refrigeration circuit system
09/17/2003EP1344938A2 Multistage rotary compressor and refrigeration circuit system
09/17/2003EP1344935A2 A method and a system for controlling a plurality of compressors
09/17/2003EP1344005A2 Compressor
09/17/2003CN1121557C Closed rotary compressor
09/16/2003US6619933 With drive circuits that do not require additional cooling equipment, such as radiators and fans
09/12/2003WO2003074880A1 Double compressor having planetary rotors
09/12/2003WO2003074879A1 Scroll compressor
09/12/2003WO2003074871A1 Closed compressor
09/12/2003WO2003033761A3 Multi-chamber installation for treating objects under vacuum, method for evacuating said installation and evacuation system therefor
09/11/2003US20030167784 Two-stage compressor for an automotive air conditioner, which can be driven by a vehicle running engine and an electric motor different therefrom
09/10/2003CN1441167A Vortex type compressor
09/10/2003CN1120962C Control system for starting of air conditioner and control method thereof
09/09/2003US6616430 Scroll compressors
09/09/2003US6616429 Apparatus and method for alignment of the bearing of the crankshaft of a scroll compressor and a scroll compressor and device for carrying out this method
09/09/2003US6616428 Double-cylinder two-stage compression rotary compressor
09/09/2003US6616415 Fuel gas compression system
09/09/2003US6615968 Ball bearing assembly electromagnetic clutch having ball bearing assembly and gas compressor utilizing electromagnetic clutch
09/09/2003US6615598 Scroll machine with liquid injection
09/03/2003EP1339987A2 Hermetic compressor
09/03/2003EP1339608A1 Device for emptying a food storage container which can be sealed by means of a valve
09/03/2003EP0846863B1 Scroll compressor
09/03/2003CN1120335C System for controlling starting of air conditioner and control method thereof
09/03/2003CN1120302C Sealed rotating compressor
08/2003
08/28/2003US20030161747 Scroll-type fluid machine
08/28/2003US20030161743 Fluid circulation path for motor pump
08/28/2003US20030161740 Liner for fluid pump motor
08/28/2003US20030161732 Overheat protection for fluid pump
08/28/2003US20030160527 Fluid barrier for motor rotor
08/28/2003US20030160525 Motor pump with balanced motor rotor
08/28/2003DE10033154C2 Schraubenverdichteranlage Screw compressor system
08/27/2003CN1438425A Vortex type pressing-out device
08/27/2003CN1119529C Scroll type compressor
08/21/2003WO2003069130A1 Scroll-type expander having heating structure and scroll-type heat exchange system employing the expander
08/21/2003US20030156961 Scroll compressor having a back pressure chamber in a rotation preventing mechanism
08/21/2003US20030156954 Compressor unit
08/21/2003US20030155339 Screw air compressor for a welder
08/20/2003EP1336760A2 Compressor unit
08/20/2003EP1336759A2 Scroll compressor and expander
08/20/2003CN1437536A Car air conditioner and car with its conditioner
08/20/2003CN1436935A 空气供给装置 Air supply means
08/20/2003CN1436934A Mixing compressor
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