| Patents for F04C 21 - Oscillating-piston pumps specially adapted for elastic fluids (244) |
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| 01/21/2015 | CN104302916A 用于同时吸入和排出流体的包括配对可摆动的叶片组件的泵和/或压缩机装置 For simultaneous suction and discharge of fluid includes a blade assembly paired swingable pump and / or compressor means |
| 01/07/2015 | EP2820305A1 Pump and/or compressor arrangement including mating, oscillatable vane members for the simultaneous admission and discharge of fluid |
| 12/02/2014 | US8899948 Fretting-corrosion-prevention oscillating vane type pump actuator |
| 10/28/2014 | US8870557 Rotor and hydraulic motor including the rotor |
| 07/30/2014 | EP2759709A1 Compressor |
| 06/19/2014 | WO2014089629A1 A rotary fluid machine and associated method of operation |
| 06/04/2014 | CN203627229U 一种无螺钉设计的无油摇摆式压缩机 A non-oil-free screw design swing compressor |
| 06/04/2014 | CN103835951A Fan-pendulum-type high-pressure blower |
| 05/21/2014 | CN203604206U 叶片摆动式气泵 Vane pump swing |
| 05/21/2014 | CN103814220A 压缩机 Compressor |
| 04/16/2014 | CN203548210U Spherical volume delivery pump |
| 03/12/2014 | CN102839333B Steel, oil pumping rod containing same and application of steel |
| 12/25/2013 | CN203362519U Variable volume high pressure blower |
| 10/22/2013 | US8562318 Multiphase pump with high compression ratio |
| 09/12/2013 | US20130236343 Compressor with low friction sealing |
| 08/21/2013 | CN203146330U Swing arm circling type compressor |
| 08/08/2013 | WO2013113073A1 Pump and/or compressor arrangement including mating, oscillatable vane members for the simultaneous admission and discharge of fluid |
| 07/31/2013 | EP2619459A1 Compressor with low friction sealing |
| 07/10/2013 | CN203051126U Improved refrigeration air compressor |
| 07/03/2013 | EP2610494A1 Automatic compensation mechanism for hinge seal gap in spherical compressor |
| 05/22/2013 | CN103114997A Swing arm rotation type compressor |
| 03/28/2013 | WO2013042527A1 Compressor |
| 03/27/2013 | CN202833166U Oil free automobile air compressor |
| 03/13/2013 | CN202789524U Swinging plate rolling ring type compressor |
| 03/06/2013 | CN202768399U Air cylinder and rotor assembly of compressor with swinging rotor |
| 03/06/2013 | CN202768398U Swing piston-type electric vacuum pump |
| 03/06/2013 | CN102959246A Compressor with low friction sealing |
| 02/27/2013 | CN202756245U Sway piston type electric vacuum pump |
| 02/13/2013 | CN102927007A Swing piston type electrical vacuum pump |
| 02/13/2013 | CN102927006A 摇摆活塞式电动真空泵 Rocking Piston electric vacuum pump |
| 01/02/2013 | CN102852792A Cylinder and rotor assembly of swinging rotor compressor |
| 12/26/2012 | CN102839333A Steel, oil pumping rod containing same and application of steel |
| 12/05/2012 | CN102812249A Improved Fluid Compressor And/or Pump Arrangement |
| 12/05/2012 | CN102812248A Fluid Compressor Or Pump Apparatus |
| 09/19/2012 | EP2499373A1 Improved fluid compressor and/or pump arrangement |
| 09/19/2012 | EP2499372A1 Fluid compressor or pump apparatus |
| 07/19/2012 | WO2012096597A1 Compressor with low friction sealing |
| 05/30/2012 | EP2456982A2 Gaseous fluid pump |
| 05/03/2012 | US20120107146 Pumping Device Having A Pressure Adjustable Function |
| 04/11/2012 | CN202187916U 转叶摆动式流体压缩机 Rotary vane compressor fluid swing |
| 03/28/2012 | EP1714036B1 Sealing surfaces between a wavy rotor collar and a displaceable slide of a plump |
| 03/15/2012 | US20120063939 High pressure pump including hollow stud |
| 03/01/2012 | WO2012024991A1 Automatic compensation mechanism for hinge seal gap in spherical compressor |
| 12/07/2011 | EP2391827A2 Rotary piston engine having an external rotor motor |
| 08/31/2011 | CN102171458A Integrated pump for compressible fluids |
| 08/24/2011 | CN101691864B Spherical expansion compressor capable of adapting to variable working conditions |
| 08/03/2011 | CN201916194U 双缸无泵润滑摆式空气压缩机 No tilting cylinder air compressor pump lubrication |
| 06/01/2011 | CN1966983B Rotating and swing type compressor structure |
| 05/19/2011 | WO2011057348A1 Improved fluid compressor and/or pump arrangement |
| 05/19/2011 | WO2011057345A1 Fluid compressor or pump apparatus |
| 04/28/2011 | WO2011011434A3 Gaseous fluid pump |
| 04/21/2011 | DE102010011050A1 Oscillating piston-type compressor for e.g. hydrogen, has oscillating pistons arranged in one-piece housing, and housing interior for fastening of oscillating pistons to connecting rod accessible through maintenance opening |
| 04/20/2011 | CN102022331A Energy-saving high-pressure oil-free cycloidal air pump |
| 04/20/2011 | CN102022330A Energy-saving low-pressure oil-free cycloidal air pump |
| 04/20/2011 | CN102022329A Energy-saving and orientation cycloidal air pump |
| 04/20/2011 | CN102022328A High-pressure cycloid air pump |
| 04/20/2011 | CN102022327A Low pressure cycloid air pump |
| 04/07/2011 | US20110081267 Pump |
| 03/09/2011 | CN201757060U Rotary compressor |
| 01/27/2011 | WO2011011434A2 Gaseous fluid pump |
| 01/12/2011 | CN201705669U Variable-capacitance type fan |
| 11/17/2010 | EP2250375A1 Integrated pump for compressible fluids |
| 09/08/2010 | CN101326368B Compressor |
| 09/01/2010 | CN101372969B Synchronous rack reciprocating blower with two vanes |
| 08/19/2010 | US20100209259 Evacuation apparatus |
| 08/05/2010 | WO2010086267A2 Rotary piston engine |
| 08/05/2010 | US20100196181 Pump Device |
| 06/30/2010 | CN1908439B Integrated multiple cylinder multiple level oscillating-piston compressor with super-large displacement ultra-high pressure pistons in series |
| 06/23/2010 | CN201513347U carbon dioxide ball-shaped expansion compressor suitable for changing working orders |
| 06/10/2010 | US20100143173 Dual-plate swash pump |
| 04/29/2010 | WO2010047602A1 Integrated pump for compressible fluids |
| 04/07/2010 | EP2171213A2 An internal combustion rotary engine |
| 03/11/2010 | WO2009138724A3 A thermodynamic device |
| 12/23/2009 | CN101608622A Multilayered energy-saving air compressor |
| 11/26/2009 | WO2009010796A3 An internal combustion rotary engine |
| 10/28/2009 | CN101566154A Energy-saving air compressor |
| 10/28/2009 | CN101566153A Multi-layer energy-saving air compressor |
| 07/21/2009 | US7563510 Fluid machinery |
| 06/17/2009 | CN201258856Y 无油摆式空气压缩机 Tilting oil-free air compressor |
| 06/11/2009 | US20090148320 Fluidic Energy Transfer Devices |
| 06/03/2009 | CN100494687C Air discharge valve structure of large displacement high pressure swinging piston compressor |
| 05/20/2009 | CN100489275C Oscillating piston mechanical piston radial sealing parts end sealing parts full-closed ring connection |
| 02/25/2009 | CN101372969A Synchronous rack reciprocating blower with two vanes |
| 01/22/2009 | WO2009010796A2 An internal combustion rotary engine |
| 01/14/2009 | CN100451341C Roller type compressor with concentric rings |
| 12/24/2008 | CN101331322A Enhancements for swash plate pumps |
| 12/17/2008 | CN101326368A Compressor |
| 11/20/2008 | WO2008140138A1 Pump having wave-movement type driving mode |
| 11/19/2008 | CN100434706C Swing piston compressor end surface sealing device |
| 11/12/2008 | CN100432375C Golden proportion of design for oscillating-piston mechanical structure |
| 11/05/2008 | CN201144810Y Double cylinder non-lubricating oscillation air compressor |
| 10/29/2008 | CN101294570A Multi-layer energy-saving air compressor |
| 10/29/2008 | CN101294569A Air compressor |
| 10/15/2008 | CN100425838C Fluid machine |
| 08/28/2008 | WO2008103058A1 Dual-plate swash pump |
| 08/27/2008 | EP1961959A1 Compressor |
| 07/16/2008 | CN100402860C Swinging piston manufacturing method |
| 07/09/2008 | CN100400880C Ball-shape compressor and expansion compressor capable of realizing multi-stage compression |
| 06/26/2008 | US20080152521 Ultra-Low Friction Air Pump for Creating Oscillatory or Pulsed Jets |
| 05/20/2008 | US7374409 Reciprocating pump |