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)
12/2004
12/15/2004	EP1486676A1 Scroll compressor
12/09/2004	US20040247476 Scroll compressor
12/09/2004	US20040247465 Screw type vacuum pump
12/08/2004	EP1212573B1 Prevention of oil backflow from a screw compressor in a refrigeration chiller
12/08/2004	CN1179175C Scroll compressor with unloading valve between energy-saving device and suction device
12/02/2004	US20040241028 Scroll compressor with flow restriction and back pressure chamber tap
12/02/2004	US20040241010 Variable capacity rotary compressor
12/01/2004	EP1482178A1 Vacuum pumping device
12/01/2004	CN1550675A Apparatus for preventing overheat of scroll compressor
11/2004
11/30/2004	US6824370 Rotary vane gas compressor having unequal intervals between vane grooves and/or unequal distances between vane grooves and rotor center
11/30/2004	US6823686 Pressure equalization system and method
11/25/2004	WO2004102006A1 System for controlling compressor of cooling system and method for controlling the same
11/25/2004	WO2004102004A1 Rotary compressor
11/25/2004	WO2004102001A1 Rotary compressor
11/25/2004	WO2004102000A1 Rotary compressor
11/25/2004	WO2004101999A1 Rotary compressor
11/25/2004	WO2004101997A1 Rotary compressor
11/25/2004	WO2004101996A1 Rotary compressor
11/25/2004	US20040234381 Screw compressor capable of manually adjusting both internal volume ratio and capacity and combined screw compressor unit accommodating variation in suction or discharge pressure
11/24/2004	EP1478854A2 Motor pump
11/24/2004	EP1478853A2 Variable capacity compressor and heat exchanging system
11/23/2004	US6821092 Capacity modulated scroll compressor
11/18/2004	US20040228751 Apparatus for preventing overheat of scroll compressor
11/17/2004	EP1477680A2 Scroll compressor
11/16/2004	US6817844 Rotary blower with forced external air cooling
11/16/2004	US6817842 Device for regulating compressors or aspirators
11/16/2004	US6817377 Processing apparatus having integrated pumping system
11/16/2004	US6817198 Method and apparatus for variable frequency controlled compressor and fan
11/11/2004	US20040223862 Oil utilized as motor protector trip for scroll compressor
11/10/2004	EP1475541A2 Scroll compressor
11/10/2004	CN1175187C Oldham coupling for a scroll compressor
11/04/2004	WO2004094830A1 Rotary type compressor
11/04/2004	WO2004094829A1 Rotary type compressor
11/04/2004	US20040216484 Refrigerant cycle apparatus
11/04/2004	DE102004015901A1 Lader mit mehreren Rückströmungskanälen zur Geräuschkontrolle Loader with multiple back-flow channels for noise control
11/03/2004	EP1472460A1 Method for controlling the oil recirculation in an oil-injected screw-type compressor and compressor using this method
11/02/2004	US6811384 Automatic regulator of intake air in a tank
10/2004
10/28/2004	WO2004092587A1 Enclosed compressor
10/28/2004	US20040213686 Multishaft electric motor and positive-displacement pump combined with such multishaft electric motor
10/28/2004	US20040211213 Refrigerating device
10/27/2004	CN1540168A Swirl compressor
10/21/2004	WO2004090332A1 Dry vacuum pump and method of starting same
10/20/2004	CN1172413C Sealed compressor with temp. feed-back provided to motor protector
10/14/2004	WO2004088140A1 Method for controlling a compressed air installation comprising several compressors, control box applied thereby and compressed air installation applying this method
10/13/2004	EP1467100A2 Hermetic compressors
10/12/2004	US6802696 Multistage compressor unit and method for regulating such multistage compressor unit
10/12/2004	CA2293562C Single-source gas actuation for screw compressor slide valve assembly
10/07/2004	US20040197204 Variable displacement mechanism for scroll type compressor
10/07/2004	US20040194766 Supercharger with multiple backflow ports for noise control
10/06/2004	EP1317627B1 Pump comprising a water supply
10/06/2004	EP1021654B1 Screw vacuum pump provided with rotors
10/06/2004	CN1534196A 可变容量旋转压缩机 Variable capacity rotary compressor
10/05/2004	US6799951 Compressor degradation detection system
09/2004
09/30/2004	WO2004083642A1 Rotary sealed compressor and refrigeration cycle apparatus
09/30/2004	US20040193330 Method and system for controlling compressors
09/30/2004	US20040187502 Compressor diagnostic system
09/29/2004	EP1462738A1 Refrigerator
09/29/2004	EP1462737A2 Refrigerant cycle apparatus
09/29/2004	EP1462652A2 Method and system for controlling compressors
09/29/2004	CN1532474A 制冷剂循环装置 The refrigerant cycle apparatus
09/29/2004	CN1532473A R4efrigerant circulation device
09/29/2004	CN1532421A 旋转式压缩机 Rotary compressor
09/29/2004	CN1168901C Scroll type compressor with improved variable displacement mechanism
09/28/2004	US6796773 Variable capacity rotary compressor
09/23/2004	US20040184932 Economizer/by-pass port inserts to control port size
09/23/2004	US20040184931 Compressor control system
09/23/2004	US20040184930 Compressor configuration system and method
09/23/2004	US20040184929 Compressor communication and control system
09/23/2004	US20040184928 Compressor vibration protection system
09/23/2004	US20040184926 Control device for hybrid compressor
09/23/2004	US20040184922 Rotary compressor
09/23/2004	DE10197271T5 Schraubenvakuumpumpe Screw vacuum pump
09/16/2004	WO2004079196A2 Hydraulically-operated control system for a screw compressor
09/16/2004	WO2004044431A3 Vacuum pump
09/15/2004	EP1457679A2 Screw compressor capable of manually adjusting both internal volume ratio and capacity
09/15/2004	EP1456589A1 Control method for mixed refrigerant based natural gas liquefier
09/15/2004	CN1529793A Compressor with capacity modulation system utilizing re-expansion chamber
09/12/2004	CA2460945A1 Screw compressor capable of manually adjusting both internal volume ratio and capacity and combined screw compressor unit accommodating variation in suction or discharge pressure
09/09/2004	US20040175274 Variable capacity rotary compressor
09/09/2004	US20040174127 Downhole compressor system with a feedback sensor
09/09/2004	US20040173379 Hydraulically-operated control system for a screw compressor
09/08/2004	EP1455093A1 Downhole compressor system
09/08/2004	EP1455091A2 Scroll compressor with vapor injection
09/08/2004	CN1526954A 可变容量的旋转压缩机 The variable capacity rotary compressor
09/08/2004	CN1526953A Screw compressor and operating method thereof
08/2004
08/26/2004	US20040165995 Hybrid compressor device
08/26/2004	US20040163400 Hybrid compressor device
08/19/2004	US20040159115 Apparatus for driving a compressor and a refrigerating air conditioner
08/19/2004	US20040159112 Compressor diagnostic system
08/19/2004	US20040159089 Combined input and output system for a combustion engine and turbine power plant
08/18/2004	CN1521582A Variable speed control of multiple motors
08/18/2004	CN1162620C High-pressure dome type compressor
08/17/2004	US6776588 Dry compressing vacuum pump having a gas ballast device
08/17/2004	CA2325085C Oiless rotary scroll air compressor air inlet valve
08/12/2004	US20040156734 Scroll compressor
08/12/2004	US20040154319 Compressor diagnostic system for communicating with an intelligent device
08/11/2004	EP1444441A1 Tempering method for a screw-type vacuum pump
08/11/2004	EP1370813A4 Hydristor heat pump
08/11/2004	EP1181454A4 Apparatus for preventing vacuum compression of scroll compressor
08/11/2004	CN1161547C Compressor

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