ClassID:

143636

F04C19/008 - CPC Classification

Classification description:

Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids; Details concerning the admission or discharge Port members in the form of conical or cylindrical pieces situated in the centre of the impeller

Recent Application in this class:
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2022-08-25

Centrifugal air compressor and control

#3
20210170299
2021-06-10

Pressurized vapor cycle liquid distillation

#4
20210048027
2021-02-18

Liquid ring pump manifold

#5
20200360832
2020-11-19

Pressurized vapor cycle liquid distillation

#6
20200141410
2020-05-07

Liquid ring vacuum pump

#7
20190381420
2019-12-19

Pressurized vapor cycle liquid distillation

#8
20190063434
2019-02-28

Component-replaceable water ring vacuum pump

#9
20160238008
2016-08-18

Liquid ring pump port member having anti-cavitation constructions

#10
20160201672
2016-07-14

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

#11
20160185617
2016-06-30

Locally powered water distillation system

#12
20160067629
2016-03-10

Pressurized vapor cycle liquid distillation

#13
20150345495
2015-12-03

Method of converting liquid ring pumps having sealing liquid vents

#14
20150093260
2015-04-02

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

#15
20150017027
2015-01-15

Liquid ring compressor

#16
20140190816
2014-07-10

Pressurized vapor cycle liquid distillation

#17
20140147244
2014-05-29

Liquid ring heat engine

#18
20140021029
2014-01-23

Locally powered water distillation system

#19
20130334026
2013-12-19

Pressurized vapor cycle liquid distillation

#20
20130292241
2013-11-07

Pressurized vapor cycle liquid distillation

#21
20120076671
2012-03-29

METHOD OF CONVERTING LIQUID RING PUMPS HAVING SEALING LIQUID VENTS

#22
20110243758
2011-10-06

Liquid ring pump with gas scavenge device

#23
20100326812
2010-12-30

Method and apparatus for phase change enhancement

#24
20090290993
2009-11-26

Liquid ring compressor

#25
20090145737
2009-06-11

Water vapor distillation apparatus, method and system

#26
20080260543
2008-10-23

LIQUID RING COMPRESSOR

#27
20080133181
2008-06-05

Locally powered water distillation system

#28
20080105610
2008-05-08

Pressurized vapor cycle liquid distillation

#29
20080105533
2008-05-08

Pressurized vapor cycle liquid distillation

#30
20080105532
2008-05-08

Liquid pumps with hermetically sealed motor rotors

#31
20080105530
2008-05-08

Pressurized vapor cycle liquid distillation

#32
20080105403
2008-05-08

Pressurized vapor cycle liquid distillation

#33
20080038120
2008-02-14

TWO STAGE CONICAL LIQUID RING PUMP HAVING REMOVABLE MANIFOLD, SHIMS AND FIRST AND SECOND STAGE HEAD O-RING RECEIVING BOSS

#34
20070017192
2007-01-25

Pressurized vapor cycle liquid distillation

#35
20050271520
2005-12-08

Liquid ring compressor

#36
20050183832
2005-08-25

Method and apparatus for phase change enhancement

#37
20050016828
2005-01-27

Pressurized vapor cycle liquid distillation