| Patents for F04B 25 - Multi-stage pumps specially adapted for elastic fluids (1,208) |
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| 03/16/2005 | EP1515042A2 Valving for multi-stage vacuum pumps |
| 03/16/2005 | CN2685168Y Liquid supercharger |
| 03/03/2005 | US20050044885 Transcritical refrigeration cycle |
| 03/03/2005 | DE10335603A1 Hochdruckpumpe für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine High pressure pump for a fuel injection system of an internal combustion engine |
| 02/24/2005 | US20050042111 Fluid pump |
| 02/17/2005 | WO2005015017A1 High pressure pump for a fuel injection device of a combustion engine |
| 02/16/2005 | CN1189658C Dual-stage piston-type compressor with minimal vibration |
| 02/10/2005 | US20050031476 Single-step or muti-step piston compressor |
| 02/02/2005 | CN1573109A 线性压缩机 Linear Compressor |
| 01/26/2005 | CN1186529C High pressure compressor |
| 01/25/2005 | US6846164 Multi-cylinder compressor having plural intake ports in a bearing plate and a cover member forming a sealed space over the bearing plate |
| 01/20/2005 | US20050013716 High-pressure generating device |
| 01/19/2005 | EP1498667A2 Improved transcritical refrigeration cycle |
| 01/12/2005 | CN1564910A High pressure pump system for supplying a cryogenic fluid from a storage tank |
| 01/11/2005 | CA2326788C Locomotive air compressor with an electric motor supported by an external bearing |
| 12/30/2004 | US20040261415 Motor-driven compressor-alternator unit with additional compressed air injection operating with mono and multiple energy |
| 12/30/2004 | DE102004026567A1 Linearkompressor Linear Compressor |
| 12/16/2004 | DE10321771A1 Verfahren zur Leistungsbegrenzung eines mehrstufigen Kompressor und Kompressor zur Durchführung des Verfahrens A method for limiting the power of a multistage compressor and compressor for carrying out the method |
| 12/09/2004 | WO2004106739A1 Piston vacuum pump |
| 12/09/2004 | US20040247466 Linear compressor for multi-stage compression |
| 11/18/2004 | US20040228737 Method for limiting power of a multi-stage compressor and a compressor for carrying out the method |
| 11/10/2004 | CN1175173C Compressor system for producing compressed air |
| 11/03/2004 | EP0922165B1 Vacuum pump |
| 10/20/2004 | EP1177382B1 Piston vacuum pump |
| 10/13/2004 | EP1210518B1 Two-stage compressor with torque reducing crankshaft |
| 10/12/2004 | US6802700 Oil supplying apparatus for opposed type reciprocating compressor |
| 10/07/2004 | US20040197201 4-Stage diaphragm compressor |
| 10/07/2004 | US20040197197 Multistage compressor for compressing gases |
| 10/07/2004 | DE10314007A1 Piston vacuum pump for pumping gas, has sensor that detects speed of switching supply of energizing current between electrical coils by magnet arrangement |
| 10/05/2004 | CA2092751C Gas compressor |
| 09/29/2004 | EP1461096A1 Rotating compressor |
| 09/23/2004 | DE20307327U1 Vacuum pump, with piston pumps in series, has a common housing for a series containing a double piston giving pistons of different dimensions and running sleeves with a different wall thickness |
| 09/21/2004 | US6792846 Gas delivery system |
| 09/15/2004 | EP1456537A1 Motor compressor-motor alternator unit with supplementary compressed air injection operating in mono-and multi-energy |
| 08/18/2004 | EP1447569A1 Device for pressure generation |
| 08/17/2004 | US6776588 Dry compressing vacuum pump having a gas ballast device |
| 08/17/2004 | US6776587 Dual-stage, plunger-type piston compressor with minimal vibration |
| 08/12/2004 | DE10302690A1 Gas compression device has valve block arranged between two compression phases which are coupled such that longitudinal axes of flasks in compression phases run on common straight line |
| 08/11/2004 | CN1161518C Forming equipment for pile with branch and/or bearing disc |
| 07/15/2004 | US20040136835 Multi-stage reciprocating vacuum pump and method of operating the same |
| 07/14/2004 | EP1030971B1 Cryogenic pump |
| 07/07/2004 | CN2623901Y Direct current differential piston reciprocating compressor |
| 07/01/2004 | WO2004044421A3 Fluid pumps with increased pumping efficiency |
| 06/03/2004 | US20040105759 High pressure pump system for supplying a cryogenic fluid from a storage tank |
| 06/03/2004 | DE10249062A1 Mehrstufige Kolbenvakuumpumpe und Verfahren zu deren Betrieb Multi-stage piston vacuum pump and method of operation |
| 06/02/2004 | CN1500991A 压缩机 Compressor |
| 05/27/2004 | WO2004044421A2 Fluid pumps with increased pumping efficiency |
| 05/20/2004 | US20040096345 Fluid pumps with increased pumping efficiency |
| 05/13/2004 | US20040091370 Compressor |
| 05/13/2004 | US20040089147 Dry-running piston compressor (crankshaft drive lubrication) |
| 04/29/2004 | US20040079226 Gas delivery system |
| 04/28/2004 | EP1413753A2 Multistage piston compressor and operation method |
| 04/27/2004 | US6726457 Compressor with supercharged inlet |
| 04/20/2004 | US6722259 Fluid machinery |
| 04/15/2004 | WO2004018873A3 Two stage double acting hydraulic/gas compressor |
| 04/15/2004 | DE202004001051U1 Multi-headed pump used as a membrane pump for producing a vacuum comprises shut-off and switching devices integrated in the suction and pressure lines between the pump heads |
| 04/08/2004 | WO2003047658B1 Rotating compressor |
| 04/07/2004 | CN1487192A Locomotive air compresser with motor supported by external bearing |
| 04/07/2004 | CN1487191A 压缩机 Compressor |
| 03/31/2004 | EP1403515A2 Reciprocating compressor |
| 03/30/2004 | CA2242076C Compressor intercooler unloader arrangement |
| 03/25/2004 | US20040057842 Reciprocating compressor |
| 03/18/2004 | US20040052651 Single stage piston compressor or multistage piston compressor for cooling of an electrical motor for a single stage piston compressor or for a multistage piston compressor |
| 03/17/2004 | CN1482358A Multistage high pressure compressor |
| 03/10/2004 | EP1396635A2 Bearing support for electric motor driven compressor |
| 03/10/2004 | EP1395755A1 Multi-stage piston-type compressor |
| 03/10/2004 | EP1395754A1 Single-step or multi-step piston compressor |
| 03/10/2004 | CN1480646A Compressor |
| 03/06/2004 | CA2437641A1 Locomotive air compressor with an electric motor supported by an external bearing |
| 03/04/2004 | WO2004018873A2 Two stage double acting hydraulic/gas compressor |
| 03/04/2004 | US20040040331 Compressor |
| 03/03/2004 | EP1394410A2 Compressor having reduced pressure pulsation |
| 03/03/2004 | EP1394409A2 Compressor |
| 03/03/2004 | EP1392973A1 Multi-stage piston-type vacuum pump and method for operating this pump |
| 02/24/2004 | US6695591 Multi-stage gas compressor system |
| 02/18/2004 | EP1203158B1 Method and compressor module for compressing a gas stream |
| 02/17/2004 | US6692239 Reciprocating compressor |
| 02/17/2004 | US6692236 Two-stage compressor with torque reducing crankshaft |
| 02/10/2004 | US6688854 Compression apparatus |
| 01/13/2004 | US6675607 Swash plate type compressor |
| 01/07/2004 | CN1133813C Vacuum pump |
| 12/23/2003 | US6666659 Flywheel attachment for a compressor motor |
| 12/23/2003 | US6666657 Reciprocating parallel flow compressor with discharge muffler |
| 12/11/2003 | WO2003102418A1 Yoke mechanism for compressor |
| 12/11/2003 | WO2003102416A1 Multi-stage compressor |
| 12/09/2003 | US6659739 Locomotive air compressor with an electric motor supported by an external bearing |
| 12/09/2003 | US6659730 High pressure pump system for supplying a cryogenic fluid from a storage tank |
| 12/03/2003 | EP1366292A1 Dry-running piston compressor (crankshaft drive lubrication) |
| 11/25/2003 | US6652241 Method and compressor module for compressing a gas stream |
| 11/25/2003 | CA2246875C Intelligent air compressor operation |
| 11/20/2003 | US20030215339 Multi-stage gas compressor system |
| 11/20/2003 | CA2398800A1 Multi-stage gas compressor system |
| 10/28/2003 | US6638029 Pressure ratio modulation for a two stage oil free compressor assembly |
| 10/14/2003 | US6632074 Pressure setting means for a multistage type piston compressor |
| 10/02/2003 | WO2003036087A3 Controlling kinematics of three-stroke or five-stroke heat engine piston stroke |
| 08/13/2003 | EP1334278A1 Single or multiple-stage piston compressor and method for cooling an electric motor for a single or multiple-stage piston compressor |
| 08/05/2003 | US6602060 Compressor employing piston-ring check valves |
| 07/15/2003 | US6592338 Vapor-compression distiller includes a rotary heat exchanger |
| 07/08/2003 | US6589024 Reciprocating compressor |
| 06/26/2003 | WO2003052270A1 Reciprocable air pump |