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 28 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
Patents for F04C 28 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids (4,928)
11/2003
11/18/2003US6648607 Scroll compressor with oil reservoir associated with motor protector
11/18/2003US6648604 Short reverse rotation of scroll compressor at startup
11/13/2003WO2003064857A3 Variable capacity compressor and heat exchanging system
11/13/2003US20030210999 Asymmetric porting for multi-rotor screw compressor
11/12/2003EP1361364A2 Multi-rotor screw compressor
11/12/2003EP1361363A2 Vacuum preventing device of scroll compressor
11/12/2003CN1455849A Pump comprising water supply
11/12/2003CN1455113A Vacuum-protective device for vortex compressor
11/06/2003US20030206813 Vacuum preventing device of scroll compressor
11/06/2003US20030206812 Vacuum preventing device for scroll compressor
11/05/2003CN1126871C Compressor assembly with positive displacement pump capable of rotating oppositely
11/04/2003US6641373 Gas compressor with variably biased vanes
11/04/2003US6641368 Compressor utilizing low volt power tapped from high volt power
10/2003
10/30/2003WO2003089790A1 Reversible pivoting vane rotary compressor for a valve-free oxygen concentrator
10/30/2003US20030202886 Vacuum preventing device for scroll compressor
10/28/2003US6638042 Asymmetric porting for multi-rotor screw compressor
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
10/21/2003US6634874 Scroll compressor with anti-reverse rotation clutch
10/16/2003US20030194334 Scroll compressor with motor control for capacity modulation
10/16/2003US20030194330 Short reverse rotation of compressor at startup
10/09/2003WO2003083311A2 Motor pump
10/09/2003US20030190247 Scroll compressor
10/09/2003US20030188542 Method for regulating a compressor installation with a dryer and compressor installation used therewith
10/08/2003CN1123699C Scroll compressor with pressure equalization groove
10/08/2003CN1123695C Load regulating compressor and method of regulating load
10/07/2003US6629830 Pressure adjuster valve and gas compressor using the same
10/02/2003WO2003081048A1 Eccentric pump and method for operation of said pump
10/01/2003EP1348870A2 Fuel gas compression system
10/01/2003CN1445456A Vortex compressor with anti-inversion set
09/2003
09/30/2003US6626652 Motor-driven compressors and methods of assembling motor-driven compressors
09/30/2003CA2275789C Positive displacement pump
09/25/2003WO2003078807A2 Suction oil injection for rotary compressor
09/25/2003US20030180169 Rotary compressor for vehicle
09/25/2003US20030180150 Oil free screw compressor operating at variable speeds and control method therefor
09/25/2003US20030180148 Device for prevention of backward operation of scroll compressors
09/24/2003EP1347176A2 Vacuum pump
09/24/2003EP1345663A1 Method for regulating a compressor installation with a dryer and compressor installation used therewith
09/24/2003EP0963507B1 Rotary device with means for monitoring and adjusting the clearance between the rotors
09/23/2003US6623244 Heater material
09/18/2003WO2003076808A1 Scroll type fluid machine
09/18/2003US20030175139 Scroll compressor having reversion preventive device
09/18/2003US20030173155 Suction oil injection for rotary compressor
09/17/2003EP1344935A2 A method and a system for controlling a plurality of compressors
09/16/2003US6619934 Scroll compressor with motor control for capacity modulation
09/16/2003US6619062 Scroll compressor and air conditioner
09/12/2003WO2003074879A1 Scroll compressor
09/10/2003CN1441167A Vortex type compressor
09/10/2003CN1120962C Control system for starting of air conditioner and control method thereof
09/09/2003US6616415 Fuel gas compression system
09/09/2003US6615594 Compressor diagnostic system
09/03/2003EP0846863B1 Scroll compressor
09/03/2003CN1120335C System for controlling starting of air conditioner and control method thereof
09/02/2003US6612117 Hydristor heat pump
08/2003
08/28/2003US20030161747 Scroll-type fluid machine
08/28/2003US20030161738 Fluid pump relief valve
08/27/2003CN1119528C Scroll compressor and air condutioner
08/19/2003US6607367 Scroll type compressor
08/14/2003WO2003067092A1 Method for controlling the oil recirculation in an oil-injected screw-type compressor and compressor using this method
08/13/2003EP1334264A2 Vane compressor or expander
08/13/2003CN1117930C Single-source gas actuation for screw compressor slide valve assembly
08/07/2003WO2003064857A2 Variable capacity compressor and heat exchanging system
08/06/2003CN1434216A Scrool compressor with vapour injection
08/05/2003US6601397 Digital scroll condensing unit controller
07/2003
07/30/2003EP1331397A2 Scroll compressor
07/30/2003EP1331396A2 Scroll compressor with vapor injection
07/29/2003US6599104 Motor-driven compressors
07/29/2003US6599102 Gas compressor and air conditioning system
07/29/2003US6599094 Screw compressor system and operating method thereof
07/29/2003US6599093 Compressor having speed and intake regulation valve control
07/24/2003US20030136145 Scroll compressor with vapor injection
07/23/2003CN1431399A Vacuum preventer for vortex compressor
07/23/2003CN1115483C Scroll compressor
07/22/2003US6595024 Expressor capacity control
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
07/16/2003CN1114807C Combination valve for screw compressors
07/16/2003CN1114763C Refrigeration screw compressor and refrigerating system with the compressor and operation method
07/16/2003CN1114761C Scroll type compessor
07/10/2003WO2003056183A1 Compressor and overload protecting apparatus
07/10/2003US20030129066 Vacuum preventing device for scroll compressor
07/09/2003CN1114043C Variable speed vortex compressor
07/08/2003US6589035 Scroll compressor having a valved back-pressure chamber and a bypass for over-compression
07/08/2003US6589023 Device and method for reducing vacuum pump energy consumption
07/08/2003CA2299843C Scroll type compressor
07/03/2003US20030124014 Gas compressor
07/03/2003US20030123990 Method for operation control of vacuum pump and control system for vacuum pump
07/03/2003US20030123989 Variable speed control of multiple motors
07/01/2003US6584963 Throttle loss recovery turbine and supercharger
07/01/2003US6584791 Pressure equalization system and method
06/2003
06/26/2003US20030115900 Rotary compressor, method for manufacturing the same, and defroster for refrigerant circuit
06/26/2003US20030115890 Method and system for diagnosing a cooling system
06/25/2003EP1320683A1 Variable speed oil-injected screw compressors
06/19/2003WO2003050459A1 Control method for mixed refrigerant based natural gas liquefier
06/19/2003US20030113214 Pressure ratio modulation for a two stage oil free compressor assembly
06/17/2003US6579067 Variable speed control of multiple compressors
06/12/2003US20030106330 Defroster of refrigerant circuit and rotary compressor
06/11/2003EP1317627A1 Pump comprising a water supply
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