| Patents for F04C 19 - Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids (784) |
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| 02/19/2015 | WO2015022941A1 Water-sealed steam compressor |
| 02/11/2015 | CN204152788U 水环式真空泵自循环补水装置 Water ring vacuum pump water from the circulation device |
| 02/04/2015 | CN204140402U 一种水环式真空泵 A water ring vacuum pump |
| 02/03/2015 | US8944778 Liquid ring pump and method for operating a liquid ring pump |
| 01/29/2015 | US20150030467 Method and apparatus for mechanically heating a mixture of substances |
| 01/20/2015 | US8936004 Rotary piston engine |
| 01/15/2015 | US20150017027 Liquid ring compressor |
| 01/07/2015 | CN204082546U 一种水环式真空泵的叶轮 A water ring vacuum pump impeller |
| 12/25/2014 | US20140377084 Liquid Ring Vacuum Pump with Cavitation Regulation |
| 12/25/2014 | US20140374235 Liquid Pumps with Hermetically Sealed Motor Rotors |
| 12/24/2014 | CN204041463U 一种真空泵分配器 In a vacuum pump dispenser |
| 10/30/2014 | US20140322039 Liquid-Ring Vacuum Pump |
| 10/02/2014 | US20140294609 Gas pumping and treatment device |
| 10/01/2014 | EP2783115A1 Liquid-ring vacuum pump |
| 10/01/2014 | EP2783073A2 Liquid-ring vacuum pump and impeller for such a pump |
| 09/25/2014 | US20140286797 Liquid-Ring Vacuum Pump and Impeller for a Liquid-Ring Vacuum Pump |
| 09/12/2014 | WO2014137219A1 Drag reducer |
| 09/11/2014 | US20140255235 Self adjusting gear pump |
| 09/09/2014 | US8828192 Liquid pumps with hermetically sealed motor rotors |
| 07/17/2014 | US20140197023 Pressurized Vapor Cycle Liquid Distillation |
| 07/10/2014 | US20140190816 Pressurized Vapor Cycle Liquid Distillation |
| 07/02/2014 | CN103894924A 负压生成装置 Negative pressure generating device |
| 06/26/2014 | WO2014019687A3 Method for operating a multi-phase pump and apparatus therefor |
| 06/25/2014 | CN203670206U 一种水环式真空泵排气管噪音消除装置 A water ring vacuum pump exhaust pipe noise cancellation device |
| 06/04/2014 | CN101658740B Pressurized vapor cycle liquid distillation |
| 06/03/2014 | US8740575 Liquid ring pump with liner |
| 05/08/2014 | WO2014070756A1 Port plate of a flat sided liquid ring pump having a gas scavenge passage therein |
| 05/07/2014 | CN203584814U 气环式真空自吸装置 Since the gas ring vacuum suction device |
| 05/01/2014 | US20140119955 Port plate of a flat sided liquid ring pump having a gas scavenge passage therein |
| 04/23/2014 | CN103742412A Water-ring vacuum pump exhaust pipe noise eliminating device |
| 03/20/2014 | WO2013087708A3 Liquid ring vacuum pump with cavitation regulation |
| 03/20/2014 | US20140079565 Helical impeller type liquid ring compressor |
| 03/04/2014 | US8662862 Pump system with vacuum source |
| 02/11/2014 | US8647580 Gas abatement |
| 01/29/2014 | CN203412761U Water-ring vacuum pump |
| 01/23/2014 | US20140021029 Locally Powered Water Distillation System |
| 01/08/2014 | CN103502573A Sealing element for a planetary rotation machine |
| 12/27/2013 | WO2013087713A3 Device and method for evacuating a chamber and purifying the gas extracted from said chamber |
| 12/25/2013 | CN203362518U Water comprehensive utilization device of water ring vacuum pump |
| 12/18/2013 | EP2674571A2 Pump power unit with liquid-ring pump |
| 12/18/2013 | EP2673471A2 Sealing element for a planetary rotation machine |
| 12/18/2013 | EP1769158B1 Gas abatement |
| 12/11/2013 | CN203335400U Vacuum pump |
| 11/12/2013 | US8579596 Ejector pump |
| 11/07/2013 | US20130292241 Pressurized Vapor Cycle Liquid Distillation |
| 11/06/2013 | CN203272147U Environment-friendly vacuum unit |
| 10/23/2013 | CN203248366U Automatic drainage device of water ring type vacuum set |
| 09/26/2013 | WO2013076107A3 Liquid-ring vacuum pump and impeller therefor |
| 09/26/2013 | WO2013060754A3 Liquid ring compressor |
| 09/17/2013 | US8534062 Locally powered water distillation system |
| 09/16/2013 | DE202012005755U1 Pumpenaggregat Pump unit |
| 09/12/2013 | US20130233695 Liquid Pumps with Hermetically Sealed Motor Rotors |
| 08/28/2013 | EP2631280A1 Method and apparatus for producing a pyrolysis liquid |
| 08/27/2013 | US8517052 Pressurized vapor cycle liquid distillation |
| 08/14/2013 | CN203130504U Novel liquid ring vacuum pump |
| 08/13/2013 | US8506762 Pressurized vapor cycle liquid distillation |
| 07/25/2013 | WO2013107888A1 Method and apparatus for mechanically heating a mixture of substances |
| 07/25/2013 | WO2012107279A3 Sealing element for a planetary rotation machine |
| 07/24/2013 | CN101124410B Ejector pump |
| 07/10/2013 | CN203051143U Cooling system capable of improving capacity of water ring vacuum pump |
| 06/20/2013 | WO2013087713A2 Device and method for evacuating a chamber and purifying the gas extracted from said chamber |
| 06/20/2013 | WO2013087708A2 Liquid ring vacuum pump with cavitation regulation |
| 06/12/2013 | EP2601129A1 Method and installation for filling containers with liquid contents |
| 06/12/2013 | CN202991500U Water circulating system of water-ring vacuum pump |
| 05/30/2013 | WO2013076176A1 Liquid-ring vacuum pump |
| 05/30/2013 | WO2013076107A2 Liquid-ring vacuum pump, and impeller for a liquid-ring vacuum pump |
| 05/29/2013 | CN202954970U Efficient water ring vacuum pump complete device with oversized sucking rate |
| 05/22/2013 | CN202946391U Gas-liquid separating device of vacuum pump exhaust pipeline |
| 05/22/2013 | CN202946389U Pump body on liquid ring vacuum pump |
| 05/08/2013 | CN202926642U Working water cooling system for water-ring type gas extraction pump |
| 05/08/2013 | CN202926631U Vacuumizing system for steam turbine set |
| 05/02/2013 | WO2013060754A2 Liquid ring compressor |
| 05/01/2013 | EP2587065A1 Liquid ring compressor |
| 04/17/2013 | CN202883383U Automatic liquid level regulator of positive pressure gas-water separator for an exhaust port of liquid ring pump |
| 04/03/2013 | CN202851361U Vacuum water recycling and cooling system |
| 03/27/2013 | CN202833165U Liquid ring type vacuum pump set |
| 03/13/2013 | CN202789523U Hydraulic vacuum device |
| 02/20/2013 | EP2558727A2 Liquid ring pump and method for operating a liquid ring pump |
| 02/13/2013 | CN102933852A Liquid ring pump and method for operating a liquid ring pump |
| 01/30/2013 | CN202707493U Water circulation system of vacuum pump |
| 01/30/2013 | CN202707492U Water circulating device of vacuum pump |
| 12/26/2012 | CN202628517U Negative pressure vacuum system used for filling vinegar and sauce |
| 11/13/2012 | US8307887 Pressurized vapor cycle liquid distillation |
| 10/10/2012 | CN202483879U Novel liquid ring vacuum pump |
| 10/09/2012 | US8282790 Distilling liquid by vaporizing to form vapor to fill head chamber, compressing vapor by rotating in liquid ring pump using internal drive shaft and eccentric rotor with rotatable housing and motor having rotor and motor magnets hermetically sealed, condensing; compact, inexpensive; water purification |
| 08/22/2012 | CN102080658B 封闭式滚动转子压缩机 Closed scroll compressor rotor |
| 08/21/2012 | US8246316 Vacuum source and float valve for a self-priming pump |
| 08/21/2012 | CA2522728C Screw type liquid ring pump |
| 08/15/2012 | CN101349072B Vacuum system |
| 08/14/2012 | CA2506269C Pressurized vapor cycle liquid distillation |
| 08/02/2012 | WO2011100346A3 Liquid ring pump provided with textured surfaces |
| 07/18/2012 | EP2476471A1 Liquid distillation with recycle of pressurized vapor |
| 06/20/2012 | CN101490422B Systems and methods for managing fluids in a processing environment using a liquid ring pump and reclamation system |
| 06/14/2012 | US20120148421 Ejector Pump |
| 05/31/2012 | WO2011128502A3 Liquid ring pump and method for operating a liquid ring pump |
| 05/16/2012 | CN102459907A 转换具有密封液体排放的液体环式泵的方法 Conversion method with a liquid ring pump discharge of the liquid seal |
| 05/16/2012 | CN101198792B Liquid ring compressor |
| 05/02/2012 | EP2446145A1 Method of converting liquid ring pumps having sealing liquid vents |
| 05/01/2012 | CA2545526C Fluid transfer using devices with rotatable housings |
| 04/12/2012 | US20120087808 Liquid ring compressors for subsea compression of wet gases |