Patents-Review.com
ClassID:

143633 ⎘

F04C19/004 - CPC Classification

Classification description:

Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids Details concerning the operating liquid, e.g. nature, separation, cooling, cleaning, control of the supply

Recent Application in this class:
#1
20250163915
2025-05-22

SYSTEM AND METHOD FOR CLEANING A LIQUID RING PUMP SYSTEM

 #2
20240392786
2024-11-28

SEALING SOFT WATER RECOVERY APPARATUS FOR VACUUM PUMP IN VACUUM PRESSURE SWING ADSORPTION OXYGEN GENERATION SYSTEM

 #3
20230332601
2023-10-19

Control of operating liquid flow into a liquid ring pump

 #4
20230146497
2023-05-11

Water-ring vacuum pump including built-in hogging flow path

 #5
20230034235
2023-02-02

Valve arrangement

 #6
20210364003
2021-11-25

Control system for liquid ring pumps

 #7
20210170299
2021-06-10

Pressurized vapor cycle liquid distillation

 #8
20210048027
2021-02-18

Liquid ring pump manifold

 #9
20210017989
2021-01-21

Liquid ring pump control

 #10
20210016217
2021-01-21

Air/oil separator

 #11
20200408211
2020-12-31

Device and method for evacuating a chamber and purifying the gas extracted from said chamber

 #12
20200360832
2020-11-19

Pressurized vapor cycle liquid distillation

 #13
20200141410
2020-05-07

Liquid ring vacuum pump

 #14
20190381420
2019-12-19

Pressurized vapor cycle liquid distillation

 #15
20190368488
2019-12-05

Fluid Transfer Using Devices with Rotatable Housings

 #16
20180209420
2018-07-26

Liquid ring pump

 #17
20170276137
2017-09-28

Exhaust bearing seat, screw compressor and air-conditioning unit

 #18
20170268512
2017-09-21

Port plate of a flat sided liquid ring pump having a gas scavenge passage therein

 #19
20170037727
2017-02-09

Liquid ring rotating casing steam turbine and method of use thereof

 #20
20160201672
2016-07-14

Low pressure sealing liquid entry area in a compressor type liquid ring pump

 #21
20160185617
2016-06-30

Locally powered water distillation system

 #22
20160169226
2016-06-16

Liquid ring fluid flow machine

 #23
20160153453
2016-06-02

Fluid transfer using devices with rotatable housings

 #24
20160067629
2016-03-10

Pressurized vapor cycle liquid distillation

 #25
20150361979
2015-12-17

Pump assembly and method for evacuating a vapor-filled chamber

 #26
20150093260
2015-04-02

Liquid ring pump with modular construction, an inter-stage bypass and overload protection

 #27
20150068399
2015-03-12

Device and Method for Evacuating a Chamber and Purifying the Gas Extracted From Said Chamber

 #28
20150044016
2015-02-12

Fuel system with liquid ring pump with centrifugal air/fuel separator

 #29
20150030467
2015-01-29

METHOD AND APPARATUS FOR MECHANICALLY HEATING A MIXTURE OF SUBSTANCES

 #30
20150017027
2015-01-15

Liquid ring compressor

 #31
20140377084
2014-12-25

Liquid ring vacuum pump with cavitation regulation

 #32
20140322039
2014-10-30

Bearing arrangement and wear indicator for a liquid ring vacuum pump

 #33
20140294609
2014-10-02

Gas pumping and treatment device

 #34
20140190816
2014-07-10

Pressurized vapor cycle liquid distillation

 #35
20140119955
2014-05-01

Port plate of a flat sided liquid ring pump having a gas scavenge passage therein

 #36
20140079565
2014-03-20

HELICAL IMPELLER TYPE LIQUID RING COMPRESSOR

 #37
20140021029
2014-01-23

Locally powered water distillation system

 #38
20130334026
2013-12-19

Pressurized vapor cycle liquid distillation

 #39
20130292241
2013-11-07

Pressurized vapor cycle liquid distillation

 #40
20120324886
2012-12-27

Liquid ring rotating casing steam turbine and method of use thereof

 #41
20120087808
2012-04-12

LIQUID RING COMPRESSORS FOR SUBSEA COMPRESSION OF WET GASES

 #42
20110300005
2011-12-08

Liquid ring vacuum pump for degassing molten plastic

 #43
20110253929
2011-10-20

MIXTURES OF HYDROPHOBIC AND HYDROPHILIC IONIC LIQUIDS AND USE THEREOF IN LIQUID RING COMPRESSORS

 #44
20110142740
2011-06-16

Method and system for treatment of malodorous gases emanating from a pulp mill

 #45
20100326812
2010-12-30

Method and apparatus for phase change enhancement

 #46
20100275843
2010-11-04

HVPE REACTOR ARRANGEMENT

 #47
20090290993
2009-11-26

Liquid ring compressor

 #48
20090185918
2009-07-23

Fluid transfer using devices with rotatable housings

 #49
20090145737
2009-06-11

Water vapor distillation apparatus, method and system

 #50
20080133181
2008-06-05

Locally powered water distillation system

 #51
20080105610
2008-05-08

Pressurized vapor cycle liquid distillation

 #52
20080105533
2008-05-08

Pressurized vapor cycle liquid distillation

 #53
20080105532
2008-05-08

Liquid pumps with hermetically sealed motor rotors

 #54
20080105530
2008-05-08

Pressurized vapor cycle liquid distillation

 #55
20080105403
2008-05-08

Pressurized vapor cycle liquid distillation

 #56
20070269309
2007-11-22

Method for operating a liquid ring compressor

 #57
20070059185
2007-03-15

Device for the Performance Adaptation of a Liquid Ring Pump

 #58
20070017192
2007-01-25

Pressurized vapor cycle liquid distillation

 #59
20050238499
2005-10-27

Fluid transfer using devices with rotatable housings

 #60
20050183832
2005-08-25

Method and apparatus for phase change enhancement

 #61
20050112007
2005-05-26

System and method of fluid transfer using devices with rotatable housings

 #62
20050081952
2005-04-21

System and method for regulating the volume of barrier fluid in a liquid ring vacuum pump

 #63
20050016828
2005-01-27

Pressurized vapor cycle liquid distillation