| Patents for F04B 25 - Multi-stage pumps specially adapted for elastic fluids (1,208) |
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| 07/05/2007 | WO2007038065A3 System and method for providing oxygen |
| 06/19/2007 | US7231894 Rotary positive displacement machine |
| 06/05/2007 | US7226276 Multi-stage reciprocating vacuum pump and method of operating the same |
| 05/24/2007 | US20070116588 Piston compressor for compressing gaseous media in at least two working chambers |
| 05/24/2007 | US20070116579 Positive-displacement reciprocating compressor |
| 05/08/2007 | US7214036 Screw type vacuum pump |
| 04/24/2007 | CA2511254C High-pressure gas compressor and method of operating a high-pressure gas compressor |
| 04/05/2007 | WO2007038065A2 System and method for providing oxygen |
| 04/05/2007 | CA2621748A1 System and method for providing oxygen |
| 03/22/2007 | US20070065300 Multi-stage compression system including variable speed motors |
| 03/08/2007 | WO2007025357A1 Installation for high pressure compression with several stages |
| 03/07/2007 | CN1303324C Locomotive air compresser with motor supported by external bearing |
| 03/01/2007 | WO2007022988A1 Multi-cylinder, dry-running piston compressor comprising a cooling air flow |
| 02/13/2007 | US7175396 Compressor |
| 02/08/2007 | WO2007014466A1 High-pressure gas compressor and method of operating a high-pressure gas compressor |
| 02/01/2007 | WO2007013957A2 Osmotically driven dispense pump and related components for use in high pressure applications |
| 02/01/2007 | WO2007012384A1 Compressor, in particular piston compressor |
| 02/01/2007 | DE102005034907A1 Verdichter, insbesondere Kolbenverdichter Compressor, piston compressor particular |
| 01/23/2007 | US7165951 High-pressure generating device |
| 01/04/2007 | DE202006014722U1 Reciprocating piston compressor, has piston rod firmly fastened with piston, and two parallel slotted pieces firmly connected with cylinder housing, where cylinder axis crosses crankpin axis, during oscillation cylinder around another axis |
| 12/13/2006 | EP1395755B1 Multi-stage piston-type compressor |
| 12/07/2006 | DE10297064B4 Mehrstufiger Verdichter zur Komprimierung von Gasen Multistage compressor for compressing gases |
| 12/05/2006 | US7144226 Centrifugal compressor having a flexible coupling |
| 11/28/2006 | US7140846 Vacuum pump having main and sub pumps |
| 11/07/2006 | US7131821 Internal intermediate pressure multistage compression type rotary compressor, manufacturing method thereof and displacement ratio setting method |
| 09/21/2006 | WO2006096957A1 Oil-less compressor with seal-dust protection |
| 09/21/2006 | DE102005012838A1 Exhaust gas turbocharger in internal combustion engine has diffuser wall which is adjustable between effective flow cross-section in diffuser reducing minimum position and flow cross-section releasing maximum position |
| 09/21/2006 | CA2600937A1 Oil-less compressor with seal-dust protection |
| 09/20/2006 | EP1703125A2 Cylinder head for multi stage compressor |
| 09/20/2006 | EP1702162A1 Piston compressor for compressing gaseous media in at least two working chambers |
| 09/14/2006 | US20060204371 Compressor assembly having an air-cooled electric motor |
| 08/24/2006 | WO2006087036A1 Fluid pump having low pressure metering and high pressure delivering |
| 08/17/2006 | WO2006060275A3 Fore-line preconditioning for vacuum pumps |
| 08/16/2006 | CN1818514A Compressor for refrigerant cycling device |
| 07/19/2006 | EP1680598A2 Quick-release pump module |
| 07/19/2006 | EP1334278B1 Single or multiple-stage piston compressor and method for cooling an electric motor for a single or multiple-stage piston compressor |
| 07/19/2006 | EP1240433B1 Dry compressing vacuum pump having a gas ballast device |
| 07/19/2006 | CN1804395A Reciprocating compressor |
| 07/19/2006 | CN1804393A Reciprocating compressor |
| 07/19/2006 | CN1265087C Reciprocating motion type compressor |
| 06/28/2006 | CN1793648A Double-spherical floating connecting structure of compressor |
| 05/30/2006 | US7052250 Reciprocating compressor |
| 05/18/2006 | US20060104844 Multip-stage piston type compressor |
| 05/16/2006 | US7044716 High-pressure multi-stage centrifugal compressor |
| 05/03/2006 | CN1766318A Compression apparatus |
| 05/03/2006 | CN1766316A Compression apparatus |
| 04/26/2006 | EP1650434A2 Multi-stage piston type compressor with reduced power input during idle running |
| 04/26/2006 | CN1763368A Household oxygen filling device |
| 04/19/2006 | EP1220991B1 Multi-stage diaphragm-type compressor |
| 04/19/2006 | CN1760549A Cooling device for piston machinery |
| 04/19/2006 | CA2523719A1 Compressor and hermetic housing with minimal housing ports |
| 04/18/2006 | US7028495 Refrigerant cycle apparatus |
| 04/18/2006 | US7028491 Method and apparatus for reducing inrush current in a multi-stage compressor |
| 04/04/2006 | US7021903 Fore-line preconditioning for vacuum pumps |
| 03/29/2006 | CN1247891C Multistage high pressure compressor |
| 03/21/2006 | US7013669 Arrangement for multi-stage heat pump assembly |
| 03/16/2006 | US20060056984 Cylinder apparatus |
| 03/07/2006 | US7008193 Micropump assembly for a microgas chromatograph and the like |
| 03/02/2006 | US20060045759 Combination loading and vacuum hopper for piston pump |
| 03/01/2006 | CN1243913C Safety goggles specially, industrial protective goggles |
| 02/21/2006 | US7000420 Compressor |
| 02/16/2006 | US20060034702 Leak detector comprising an inlet |
| 01/31/2006 | CA2357186C Shaft extension for use with outboard bearing designs |
| 01/25/2006 | CN1238634C Sealed reciprocating compressor |
| 12/22/2005 | US20050283282 Method and apparatus for controlling desiccant regeneration in air dryer equipment for a locomotive |
| 12/14/2005 | CN1231669C Oil supply equipment for opposed reciprocating compressor |
| 12/13/2005 | US6973868 Dry-running piston compressor (crankshaft drive lubrication) |
| 11/30/2005 | EP1600634A2 Piston compressor |
| 11/30/2005 | EP1600633A2 Piston compressor |
| 11/30/2005 | EP1600632A2 Piston compressor |
| 11/30/2005 | EP1600630A2 Multistage gas compressor and its control method |
| 11/24/2005 | US20050260080 Reciprocating compressor |
| 11/23/2005 | EP1598553A2 Two stage reciprocating compressor |
| 10/06/2005 | WO2005093254A1 Fluid compressors |
| 10/06/2005 | DE10057383B4 Mehrstufiger Kolbenverdichter und Verfahren zur Kühlung eines elektrischen Motors für einen mehrstufigen Kolbenverdichter Multi-stage piston compressor and method of cooling an electric motor for a multi-stage piston compressor |
| 09/29/2005 | US20050210895 Method and apparatus for reducing inrush current in a multi-stage compressor |
| 09/15/2005 | US20050201880 Positive-displacement reciprocating compressor |
| 09/15/2005 | US20050201868 Multi-stage compressor |
| 09/14/2005 | EP1574709A2 Positive-displacement reciprocating compressor. |
| 09/14/2005 | CN1667269A Positive-displacement reciprocating compressor |
| 08/24/2005 | EP1242741B1 Dual-stage, plunger-type piston compressor with minimal vibration |
| 08/11/2005 | US20050175480 Yoke mechanism for compressor |
| 08/03/2005 | CN1213225C Multi cylinder compressor |
| 07/20/2005 | CN1211580C Clutchless volume variable compressor |
| 06/30/2005 | WO2005059362A1 Piston compressor for compressing gaseous media in at least two working chambers |
| 06/16/2005 | US20050129542 Compressor assembly with piston having multiple cross sections |
| 06/15/2005 | EP1541867A1 Piston type compressor for compressing gases in at least two compression chambers |
| 06/15/2005 | CA2488975A1 Compressor assembly with piston having multiple cross sections |
| 06/09/2005 | US20050123426 Multi-directional pump |
| 06/09/2005 | DE102004051359A1 Zweistufige Kompression zur Luftversorgung eines Brennstoffzellensystems Two-stage compression for supplying air to a fuel cell system |
| 06/08/2005 | EP1538052A2 Compressor |
| 06/08/2005 | CN1624325A Multi-directional pump |
| 05/31/2005 | US6898940 High pressure pump system for supplying a cryogenic fluid from a storage tank |
| 05/18/2005 | CN1617750A Rotating compressor |
| 05/11/2005 | CN1201081C Method for producing compressor piston |
| 05/05/2005 | US20050095488 Two-stage compression for air supply of a fuel cell system |
| 04/26/2005 | US6883247 Gas delivery system |
| 04/13/2005 | EP1522430A1 Method and device to increase the pressure of gases |
| 03/30/2005 | EP1461096A4 Rotating compressor |
| 03/17/2005 | US20050058552 Valving for multi-stage vacuum pumps |