| Patents for F04C 28 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids (4,928) |
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| 04/11/2008 | CA2625543A1 Active intake pressure control of downhole pump assemblies |
| 04/09/2008 | CN101160467A Rotary fluid machine |
| 04/09/2008 | CN100379994C Gas compressor and air-conditioning system |
| 04/09/2008 | CN100379991C Variable displacement pump |
| 04/08/2008 | US7354259 Scroll compressor having a valved back pressure chamber and a bypass for overcompression |
| 04/08/2008 | US7354251 Variable capacity rotary compressor |
| 04/05/2008 | CA2562707A1 Variable capacity natural gas compressor |
| 04/02/2008 | EP1906024A2 Operation control device and method of vacuum pumps |
| 04/02/2008 | EP1906023A1 Evacuation apparatus |
| 04/02/2008 | EP1906022A1 Evacuation apparatus |
| 04/02/2008 | CN101153600A Rotary compressor and heat pump system |
| 04/02/2008 | CN100378337C Overheating protection apparatus of scroll compressor |
| 04/02/2008 | CN100378336C Overcompression prevention device for tubine compressor |
| 04/02/2008 | CN100378335C Dual volume-ratio scroll machine |
| 03/27/2008 | WO2008034551A1 A rotary pump with vanes |
| 03/26/2008 | CN201041157Y Roots blower units |
| 03/20/2008 | DE19857453B4 Temperaturüberwachung an Rotoren von Vakuumpumpen Temperature control of rotors of vacuum pumps |
| 03/19/2008 | EP1900943A1 Method of controlling the stopping operation of vacuum pump and device therefor |
| 03/19/2008 | CN101144476A Overloading protecting device and method for air-conditioner compressor |
| 03/19/2008 | CN101144469A Unloading valve component structure for protecting compressor |
| 03/18/2008 | US7344365 Scroll compressor with bypass holes communicating with an intake chamber |
| 03/13/2008 | WO2008030572A1 Compressor data module |
| 03/13/2008 | CA2662482A1 Compressor data module |
| 03/06/2008 | WO2008009073A8 Method for controlling a compressed air unit and a controller and compressed air unit for applying such a method |
| 03/06/2008 | DE10009673B4 Spiralkompressor Scroll compressor |
| 02/28/2008 | WO2008022916A1 Method for reacting self-igniting dusts in a vacuum pump device |
| 02/27/2008 | CN100371601C Rotary compressor |
| 02/27/2008 | CN100371598C Scroll compressor |
| 02/20/2008 | EP1890040A2 Vacuum pump |
| 02/19/2008 | CA2450324C Variable speed control of multiple motors |
| 02/14/2008 | US20080038134 Scroll compressor |
| 02/13/2008 | CN101122290A Screw compressor |
| 02/06/2008 | CN100366992C Low-temperature air conditioner heat pump system and method for decreasing temperature regulation fluctuation by employing the same |
| 02/06/2008 | CN100366910C Scroll compressor having overheat preventing unit |
| 02/06/2008 | CN100366909C Variable capacity rotary compressor |
| 02/06/2008 | CN100366906C Scroll type fluid machine |
| 01/31/2008 | WO2008014433A1 Screw compressor capacity control |
| 01/30/2008 | CN201013598Y Screw air compressor double temperature protecting equipment |
| 01/30/2008 | CN201013597Y Oil free helical lobe compressor controller |
| 01/30/2008 | CN201013578Y Air compressor and controlling mechanism |
| 01/30/2008 | CN101113729A Automatic unloading one-way valve of air compressor |
| 01/29/2008 | US7322806 Scroll compressor with externally installed thermostat |
| 01/24/2008 | WO2008009073A1 Method for controlling a compressed air unit and a controller and compressed air unit for applying such a method |
| 01/24/2008 | WO2008009072A1 Method for controlling a compressed air installation and controller and compressed air installation for employing such a method |
| 01/24/2008 | WO2007068335A8 Air-conditioning compressor |
| 01/23/2008 | CN100363623C Variable capacity rotary compressor |
| 01/23/2008 | CN100363622C Variable capacity rotary compressor |
| 01/16/2008 | CN201007266Y Electromagnetic valve for air conditioner capacity changing compressor |
| 01/16/2008 | CN101105175A Compressed air manufacturing facility |
| 01/16/2008 | CN100362241C Method for controlling the oil recirculation in an oil-injected screw-type compressor and compressor using this method |
| 01/09/2008 | EP1875075A1 Pumping system and method of operation |
| 01/08/2008 | US7316546 Screw compressor |
| 01/02/2008 | CN101096950A Device for changing displacement of slide vane compressor |
| 01/01/2008 | US7313923 Compressor diagnostic system for communicating with an intelligent device |
| 12/26/2007 | CN200996373Y Air compressor for air-source hot-pump hot-water apparatus set |
| 12/26/2007 | CN100357607C Variable capacity rotary compressor |
| 12/20/2007 | DE102005014129B4 Abwärme eines Verbrennungsmotors nutzendes System Waste heat from an internal combustion engine using system |
| 12/19/2007 | CN101091063A Capacity varying type rotary compressor and refrigeration system having the same |
| 12/19/2007 | CN101091062A Capacity varying type rotary compressor and refrigeration system having the same |
| 12/19/2007 | CN100356121C 制冷机 Refrigerator |
| 12/19/2007 | CN100356066C 机油泵 Oil Pump |
| 12/19/2007 | CN100356065C 制冷压缩机 Refrigeration Compressors |
| 12/18/2007 | US7309217 Variable capacity rotary compressor |
| 12/13/2007 | WO2007140759A1 Vane cell pump |
| 12/13/2007 | WO2007140550A1 Device for regulating the operating pressure of an oil-injected compressor installation |
| 12/12/2007 | CN200989309Y Compressor bearing seat with photoelectric oil level sensor |
| 12/12/2007 | CN200989308Y Compressor bearing seat with photoelectric oil level sensor |
| 12/12/2007 | CN200989307Y Compressor with photoelectric oil level sensor |
| 12/12/2007 | CN200989306Y Compressor with photoelectric oil level sensor |
| 12/12/2007 | CN200989305Y Compressor with photoelectric oil level sensor |
| 12/12/2007 | CN200989297Y Control display device of variable frequency compressor and refrigerator with the same device |
| 12/12/2007 | CN101086258A Frequency-variable screw type refrigerating compressor |
| 12/12/2007 | CN101086254A Compressor protection method of air conditioner and the device |
| 12/12/2007 | CN101086253A Compressor control method of air conditioner |
| 12/12/2007 | CN101086252A Compressor control method of central air conditioner |
| 12/12/2007 | CN101086251A Air conditioner compressor system and its control method |
| 12/12/2007 | CN100354526C Compressor with capacity control |
| 12/12/2007 | CN100354525C 变容旋转压缩机 Variable capacity rotary compressor |
| 12/12/2007 | CN100354524C 可变容量旋转式压缩机 The variable capacity rotary compressor |
| 12/12/2007 | CA2591359A1 Capacity control of a compressor |
| 12/06/2007 | US20070280843 Rotary Compressor |
| 12/06/2007 | DE10240980B4 Spiralkompressor mit variabler Kapazität A scroll type compressor with variable capacity |
| 12/05/2007 | CN100353070C Variable capacity rotary compressors |
| 12/05/2007 | CN100353069C 可变容量旋转压缩机 The variable capacity rotary compressor |
| 12/05/2007 | CN100353068C Variable capacity rotary compressors |
| 12/05/2007 | CN100353067C 可变容量旋转压缩机 The variable capacity rotary compressor |
| 12/05/2007 | CN100353066C Vortex machine |
| 11/28/2007 | CN200982290Y Automatic pneumatic switch for air compressor |
| 11/27/2007 | US7300259 Variable capacity rotary compressor |
| 11/22/2007 | US20070269326 Dual volume-ratio scroll machine |
| 11/21/2007 | CN200978794Y Controller for motor compressor |
| 11/21/2007 | CN101076235A Radiator with rotation-speed indication function |
| 11/20/2007 | US7296983 Gas compression apparatus capable of preventing lubricant leakage |
| 11/20/2007 | US7296427 Hybrid compressor device for a vehicle |
| 11/15/2007 | DE102006021703A1 Oil-flooded screw compressor has two rotors and measuring element of regulating chain, where regulating algorithm of regulating chain increases pressure on balance pistons, if measuring element indicates larger gap |
| 11/14/2007 | EP1727986B1 Gas vane pump and method of operating the pump |
| 11/14/2007 | CN200975343Y Electromagnetical three-way valves for refrigeration system two-spool compressor |
| 11/14/2007 | CN101070846A Refrigeration compressor |
| 11/14/2007 | CN100348866C Multistage compressor unit and method for regulating such multistage compressor unit |
| 11/13/2007 | US7293966 Variable capacity rotary compressor |