| 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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| 06/14/2007 | DE10005779B4 Verfahren zur Verbesserung des Anlaufverhaltens einer Vorrichtung beim Übergang vom Pumpen- in den Motorbetrieb A method for improving the startup behavior of a device during the transition from the pump to the engine operating |
| 06/13/2007 | CN2911259Y Capacity controlling compressor |
| 06/13/2007 | CN1978900A Transplanting method for automatic air-conditioning from variable-displacement compressor to fixed-displacement compressor |
| 06/06/2007 | DE10133861B4 Antriebssystem für Pumpen Drive system for pumps |
| 06/05/2007 | US7226275 Variable capacity rotary compressor |
| 05/31/2007 | WO2007060642A1 Rotary motor with intermittent movements of the rotors |
| 05/31/2007 | US20070122284 Rotary compressor |
| 05/31/2007 | CA2631319A1 Rotary motor with intermittent movements of the rotors |
| 05/30/2007 | EP1790856A1 Scroll compressor |
| 05/30/2007 | CN1971052A Displacement-variable compressor and method for operating same |
| 05/30/2007 | CN1971051A Compressor with variable volume |
| 05/29/2007 | US7223081 Variable capacity rotary compressor |
| 05/29/2007 | US7222493 Compressor diagnostic system |
| 05/24/2007 | WO2005108882A9 Compressor diagnostic and protection system |
| 05/23/2007 | EP1787025A2 Valve preventing unpowered reverse run at shutdown |
| 05/23/2007 | CN1966985A Volume varying device for blade type compressor |
| 05/22/2007 | US7220108 Variable capacity rotary compressor |
| 05/17/2007 | US20070110605 Scroll compressor |
| 05/16/2007 | CN2900862Y Antiexplosion air compressor |
| 05/16/2007 | CN1963217A Overheat proofing rotating blade type compressor |
| 05/16/2007 | CN1963216A Volume variable rotating blade type compressor |
| 05/16/2007 | CN1963215A Volume variable rotating compressor |
| 05/16/2007 | CN1963214A Volume varying device for rotating blade type compressor |
| 05/16/2007 | CN1963213A Volume varying device for rotating blade type compressor |
| 05/16/2007 | CN1963212A Rotation radius varying device for rotating blade of rotating compressor |
| 05/16/2007 | CN1316212C Refrigerant circulation device |
| 05/10/2007 | US20070104604 Scoll fluid machine |
| 05/10/2007 | US20070104587 Evacuation apparatus |
| 05/09/2007 | CN2898369Y Convenient cable-pipe air-charger |
| 05/09/2007 | CN1961476A System and method for increasing output horsepower and efficiency in a motor |
| 05/08/2007 | US7214036 Screw type vacuum pump |
| 05/03/2007 | WO2006044787A3 Pressure equalization system |
| 05/03/2007 | DE10141397B4 Motorangetriebener Kompressor Engine Driven Compressor |
| 05/02/2007 | CN2895804Y Horizontal admission controller |
| 05/02/2007 | CN1955481A Variable capacity vortex compressor |
| 05/02/2007 | CN1955480A Method for controlling dicharge temp of compressor |
| 05/02/2007 | CN1955479A Variable capacity rotary compressor with double-case and its running method |
| 05/02/2007 | CN1955478A Variable capacity twin rotary compressor and its running method |
| 05/02/2007 | CN1955477A 多级旋转压缩机 Multi-stage rotary compressor |
| 05/02/2007 | CN1955476A Variable capacity multi-cylinder rotary compressor and its running method |
| 04/26/2007 | DE102006035364A1 Variable-revs compressor for gas has several planetary transmission mechanisms alongside each other |
| 04/25/2007 | CN2893224Y 压缩机能量调节信号转换器 The compressor capacity control signal converter |
| 04/25/2007 | CN1952813A An adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor |
| 04/25/2007 | CN1952398A Compressor capacity modulation system and method |
| 04/25/2007 | CN1952396A Double stage screw rod compressor and double stage compressing refrigerator using same |
| 04/25/2007 | CN1312402C Screw compressor |
| 04/24/2007 | US7207787 Scroll compressor with backflow-proof mechanism |
| 04/19/2007 | WO2007042747A1 Method of operating a pumping system |
| 04/18/2007 | EP1775475A2 Scroll machine |
| 04/18/2007 | EP1774178A1 System and method to reduce acoustic noise in screw compressors |
| 04/18/2007 | EP1511937B1 Methods and apparatus for unloading a screw compressor |
| 04/18/2007 | CN1950613A System and method for variable speed operation of a screw compressor |
| 04/18/2007 | CN1950612A Hermetic rotary compressor |
| 04/18/2007 | CN1948761A Volumetric screw compressor |
| 04/17/2007 | US7204678 Method for controlling the oil recirculation in an oil-injected screw-type compressor and compressor using this method |
| 04/12/2007 | WO2007019651A3 Improved device for adjusting the flow rate of a mobile oil- injected screw-type compressor. |
| 04/12/2007 | DE102005010690B4 Öleingespritzter Verdichter mit Temperaturschalter Oil-injected compressors with temperature switch |
| 04/11/2007 | EP1772630A2 Scroll machine |
| 04/11/2007 | EP1772629A2 Scroll machine |
| 04/11/2007 | CN2888742Y DC/AC inverter for AC motor and pump using the same |
| 04/11/2007 | CN1946940A 膨胀器 Expander |
| 04/11/2007 | CN1309959C Displacement changing device of vortex compressor |
| 04/10/2007 | US7201569 Screw compressor |
| 04/04/2007 | CN2886128Y Electronic control system for air compressor |
| 04/04/2007 | CN1940301A Oil returning tube toward protector of electric motor of scroll compressor |
| 04/04/2007 | CN1308633C A refrigeration system |
| 03/28/2007 | EP1768237A2 Compressor protection and control system |
| 03/28/2007 | CN1936335A Flow.pressure combined control valve and pressure-limited, flow-limited hydraulic pump |
| 03/28/2007 | CN1936334A Variable volume type rotary compressor and its control method |
| 03/22/2007 | US20070065325 Scroll compressor |
| 03/21/2007 | EP1763620A1 Compressor unloading valve |
| 03/21/2007 | CN1932297A 可变容量旋转式压缩机 The variable capacity rotary compressor |
| 03/21/2007 | CN1932296A 可变容量旋转式压缩机 The variable capacity rotary compressor |
| 03/21/2007 | CN1932295A 可变容量旋转式压缩机 The variable capacity rotary compressor |
| 03/21/2007 | CN1306170C Apparatus for preventing overheat of scroll compressor |
| 03/21/2007 | CN1306169C Screw compressor and its running method |
| 03/20/2007 | CA2331140C System for compressing contaminated gas |
| 03/14/2007 | CN2877729Y Pressure controlling and releasing device for injection pump |
| 03/14/2007 | CN1930396A Gas vane pump, and method of operating the pump |
| 03/13/2007 | CA2431715C Lubrication of a hermetic carbon dioxide compressor |
| 03/07/2007 | EP1760318A2 Dual volume-ratio scroll machine |
| 03/07/2007 | CN1924359A Capacity controlled compressor with one and two cylinders |
| 03/07/2007 | CN1924357A Pressure startup device for air compressor |
| 03/06/2007 | US7186100 Variable capacity rotary compressor |
| 03/06/2007 | US7186098 Eccentric pump and method for operation of said pump |
| 03/01/2007 | WO2007023904A1 Hermetic compressor and refrigeration cycle device |
| 03/01/2007 | DE102005040921A1 Dry running screw type compressor has a venting valve controlled by an actuator operated by the delivery pressure |
| 02/28/2007 | CN1922388A Method and means for controlling a flow through an expander |
| 02/28/2007 | CN1920305A Compressor |
| 02/28/2007 | CN1302206C Device for preventing vaccum in vortex compressor |
| 02/27/2007 | US7181919 System utilizing waste heat of internal combustion engine |
| 02/22/2007 | WO2007019651A2 Improved device for adjusting the flow rate of a mobile oil- injected screw-type compressor. |
| 02/21/2007 | CN2871924Y Charging-controlled combined valve |
| 02/15/2007 | US20070036666 Rotary fluid machine |
| 02/13/2007 | US7175401 Variable capacity rotary compressor |
| 02/08/2007 | WO2007014523A1 A variable capacity compressor |
| 02/07/2007 | EP1750348A2 Hermetic electric compressor |
| 02/07/2007 | EP1750347A2 Synchronous induction motor |
| 02/07/2007 | CN1908440A Air-tight compressor thermal protector |
| 02/07/2007 | CN1908438A Capacity modulated scroll machine |