| Patents for F04B 31 - Free-piston pumps specially adapted for elastic fluids; Systems incorporating such pumps (182) | |
|---|---|
| 01/2015 | |
| 01/14/2015 | CN204099053U 自由活塞压气机 Free piston compressor |
| 12/2014 | |
| 12/30/2014 | US8920135 Multipurpose gravity air compressor |
| 08/2014 | |
| 08/13/2014 | CN103982396A 压缩机改进结构 Compressor improved structure |
| 06/2014 | |
| 06/11/2014 | CN101270744B Compressor improvements |
| 05/2014 | |
| 05/08/2014 | DE102011109499A1 Compressor for increasing pressure of gas or vaporous medium in air, has incompressible liquid that is directly poured above the piston of compression cylinder with suction valve and pressure valve |
| 11/2013 | |
| 11/13/2013 | EP2661559A1 Double-acting refrigeration compressor |
| 09/2013 | |
| 09/04/2013 | CN103282656A Double-acting refrigeration compressor |
| 01/2013 | |
| 01/10/2013 | WO2013004860A1 Hydraulic mechanism |
| 07/2012 | |
| 07/12/2012 | WO2012093160A1 Double-acting refrigeration compressor |
| 05/2012 | |
| 05/08/2012 | US8172557 High-pressure gas compressor and method of operating a high-pressure gas compressor |
| 04/2012 | |
| 04/05/2012 | DE19983919B3 Kolbenstützstruktur für einen Linearkompressor Piston supporting structure for a linear compressor |
| 01/2012 | |
| 01/26/2012 | WO2012009858A1 Natural gas compressor capable of improving intake condition |
| 06/2011 | |
| 06/29/2011 | CN201884239U Hydraulic type free piston compressor |
| 03/2011 | |
| 03/09/2011 | EP1915532B1 High-pressure gas compressor and method of operating a high-pressure gas compressor |
| 12/2010 | |
| 12/02/2010 | DE102009021778A1 Mikropumpe Micropump |
| 11/2010 | |
| 11/18/2010 | DE102009020925A1 Verdichter mit Kolbendummy Compressor with piston dummy |
| 11/10/2010 | CN101094970B Dynamic system for refrigeration equipment |
| 09/2010 | |
| 09/09/2010 | US20100223936 Linear Compressor with Carbon Fibre Reinforced Spring |
| 08/2010 | |
| 08/31/2010 | US7784277 Hydraulic drive system with temperature compensation for pressure limit |
| 06/2010 | |
| 06/02/2010 | EP2130038B1 Chromatographic column system |
| 04/2010 | |
| 04/21/2010 | CN1846061B Linear motor controller improvements |
| 11/2009 | |
| 11/18/2009 | EP1812759B1 Combined piston-expander compressor |
| 06/2009 | |
| 06/11/2009 | US20090148319 Linear compressor with permanent magnets |
| 05/2009 | |
| 05/05/2009 | US7527482 Method and apparatus for compressing a gas to a high pressure |
| 03/2009 | |
| 03/11/2009 | CN100467866C Piston type thermodynamic gas compressor |
| 03/05/2009 | WO2009029650A1 Adjustable length bicycle mountable hand pump |
| 03/05/2009 | DE102007040361A1 Free piston engine for e.g. motor vehicle, has compression storage whose pressure is communicated to computer by sensor, where compression pressure and time are respectively controlled by control and switching valves based on fuel condition |
| 02/2009 | |
| 02/05/2009 | WO2009017429A1 Improved multicylinder free piston machine |
| 12/2008 | |
| 12/03/2008 | EP1664533A4 Linear motor controller improvements |
| 10/2008 | |
| 10/23/2008 | WO2008124877A1 A magnetic drive fluid pump |
| 10/15/2008 | CN100425831C Compressor improvements |
| 10/02/2008 | WO2008118016A1 Chromatographic column system |
| 10/02/2008 | CA2681403A1 Chromatographic column system |
| 09/2008 | |
| 09/24/2008 | EP1972933A1 Chromatographic column system |
| 09/24/2008 | CN101270744A Compressor improvements |
| 09/04/2008 | US20080213115 High-Pressure Gas Compressor And Method Of Operating A High-Pressure Gas Compressor |
| 07/2008 | |
| 07/01/2008 | US7392737 Dynamic system for refrigeration equipment |
| 05/2008 | |
| 05/06/2008 | US7367786 Linear compressor |
| 04/2008 | |
| 04/30/2008 | EP1915532A1 High-pressure gas compressor and method of operating a high-pressure gas compressor |
| 04/02/2008 | EP1629197A4 Compressor improvements |
| 02/2008 | |
| 02/27/2008 | CN201027615Y Vehicle tyre inflator with manual decompression device |
| 01/2008 | |
| 01/17/2008 | DE102006010122B4 Kombinierter Kolben-Expander-Verdichter Combined piston expander-compressor |
| 01/09/2008 | CN100360846C Reciprocating piston pump adjustable inlet ball travel |
| 12/2007 | |
| 12/26/2007 | CN101094970A Dynamic system for refrigeration equipment |
| 10/2007 | |
| 10/18/2007 | US20070240919 Dual-pump fluid distribution system for a hybrid electric vehicle |
| 10/04/2007 | WO2007109836A1 Magnetic drive fluid pump |
| 08/2007 | |
| 08/30/2007 | DE102006010122A1 Combined piston-expander-compressor for use in e.g. cooling system, has control valve provided for controlling piston rod, and attachment plate arranged in attachment housing that is attached to cylinder of expansion stage |
| 08/01/2007 | EP1812759A1 Combined piston-expander compressor |
| 05/2007 | |
| 05/30/2007 | EP1188221B1 Linear motor |
| 05/18/2007 | WO2004090338A3 Dynamic system for refrigeration equipment |
| 04/2007 | |
| 04/25/2007 | CN1952391A Piston type thermodynamic gas compressor |
| 04/24/2007 | CA2511254C High-pressure gas compressor and method of operating a high-pressure gas compressor |
| 04/05/2007 | WO2007011247A3 Refrigeration compressor with flexible discharge conduit |
| 03/2007 | |
| 03/07/2007 | CN2876372Y Pipette |
| 02/2007 | |
| 02/08/2007 | WO2007014466A1 High-pressure gas compressor and method of operating a high-pressure gas compressor |
| 02/01/2007 | US20070022759 Dynamic system for refrigeration equipment |
| 02/01/2007 | DE202006014551U1 Industrial centrifugal pump for gas and vapor phases has gas inlet close to rotor inlet side and discharges outside pump housing |
| 01/2007 | |
| 01/25/2007 | US20070017218 Engine / compressor of compressed gas of free piston and freewheel |
| 12/2006 | |
| 12/06/2006 | CN1874121A Steam compressor and driving and controlling method thereof |
| 10/2006 | |
| 10/25/2006 | EP1715184A1 Linear compressor controller |
| 10/11/2006 | CN1846061A Linear motor controller improvements |
| 10/10/2006 | US7117783 Reciprocable piston with a fluid scavenging system and method of scavenging a fluid |
| 10/05/2006 | DE102004056298B4 Kombinierter Kolben-Expander-Verdichter Combined piston expander-compressor |
| 09/2006 | |
| 09/06/2006 | CN1829859A Compressor improvements |
| 08/2006 | |
| 08/01/2006 | US7082757 Pump/motor operating mode switching control for hydraulic hybrid vehicle |
| 07/2006 | |
| 07/12/2006 | CN1264268C Linear motor and its driving and controlling method |
| 06/2006 | |
| 06/01/2006 | DE102004056298A1 Kombinierter Kolben-Expander-Verdichter Combined piston expander-compressor |
| 05/2006 | |
| 05/26/2006 | WO2006053517A1 Combined piston-expander compressor |
| 05/24/2006 | EP1490597B1 Method and apparatus for compressing a gas to a high pressure |
| 03/2006 | |
| 03/30/2006 | US20060067842 Simplified piston slidable in a cylinder |
| 03/02/2006 | US20060045765 Method and device for operating an internal combustion engine having at least two cylinder banks |
| 03/01/2006 | EP1629197A1 Compressor improvements |
| 01/2006 | |
| 01/25/2006 | EP1618309A2 Dynamic system for refrigeration equipment |
| 01/05/2006 | US20060000208 Pump/motor operating mode switching control for hydraulic hybrid vehicle |
| 12/2005 | |
| 12/29/2005 | US20050287007 Foam encased pump |
| 08/2005 | |
| 08/23/2005 | US6931983 Device for circulating sealing gas for mechanical dry seals of a centrifugal compressor at times when the machine is stationary and pressurized |
| 08/18/2005 | US20050180864 Method and apparatus for compressing a gas to a high pressure |
| 08/04/2005 | US20050169777 Singlestage and multistage electromagnetic revolutionary piston pump |
| 07/2005 | |
| 07/20/2005 | CN1643251A Method and apparatus for compressing a gas to a high pressure |
| 05/2005 | |
| 05/12/2005 | US20050100454 Device for circulating sealing gas for mechanical dry seals of a centrifugal compressor at times when the machine is stationary and pressurized |
| 12/2004 | |
| 12/29/2004 | EP1490597A1 Method and apparatus for compressing a gas to a high pressure |
| 10/2004 | |
| 10/21/2004 | WO2004090338A2 Dynamic system for refrigeration equipment |
| 10/19/2004 | CA2379766C Method and apparatus for compressing a gas to a high pressure |
| 05/2004 | |
| 05/20/2004 | US20040096344 Simplified piston slidable in a cylinder |
| 05/19/2004 | EP1420167A2 Device for circulating sealing gas for mechanical dry seals of a centrifugal compressor |
| 05/19/2004 | EP1420164A2 Simplified piston slidable in a cylinder |
| 03/2004 | |
| 03/11/2004 | WO2004020823A1 Hydraulic pump comprising an independent drive unit |
| 01/2004 | |
| 01/08/2004 | DE10242271B3 Kolbenexpansionsmaschine Piston expander |
| 12/2003 | |
| 12/18/2003 | WO2003104651A1 Aerating wheel |
| 10/2003 | |
| 10/09/2003 | WO2003083298A1 Method and apparatus for compressing a gas to a high pressure |
| 04/2003 | |
| 04/23/2003 | CN1106512C Gas cylinder |
| 04/22/2003 | US6551076 Fuel/hydraulic engine system |
| 06/2002 | |
| 06/20/2002 | US20020076339 Fuel/hydraulic engine system |
| 05/2002 | |
| 05/01/2002 | CN1083941C 热回收装置 Heat recovery |
| 03/2002 | |
| 03/27/2002 | CN2483277Y Air retarding type braking element |
| 03/26/2002 | USRE37603 Gas compressor |
| 09/2000 | |
| 09/20/2000 | EP0647291B1 A gas compressor |
| 06/2000 | |
| 06/20/2000 | US6077053 Piston type gas compressor |
| 10/1999 | |
| 10/20/1999 | CN2344330Y Evacuated container and its manual evacuation device |
| 06/1999 | |
| 06/23/1999 | CN2325549Y Electric miniature inflating machine |
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