ClassID:

143669

F04C28/125 - CPC Classification

Classification description:

Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using sliding valves with sliding valves controlled by the use of fluid other than the working fluid

Recent Application in this class:
#1
20230027313
2023-01-26

Self-positioning volume slide valve for screw compressor

#2
20210285707
2021-09-16

Compressor for heat exchange system, heat exchange system and method for controlling operation of compressor

#3
20210190071
2021-06-24

Compressor stop valve and associated system

#4
20200040896
2020-02-06

SCREW COMPRESSOR

#5
20190338773
2019-11-07

Rotary displacement compressor having a check valve and a backflow control valve arranged in series through a discharge pipe

#6
20190203716
2019-07-04

Compressor stop valve and associated system

#7
20190093657
2019-03-28

Suction side slide valve for a screw compressor

#8
20180209423
2018-07-26

Rotary compressor with vapor injection system

#9
20180135610
2018-05-17

Control valve for variable displacement compressor

#10
20170356430
2017-12-14

Control valve for variable displacement compressor

#11
20170030356
2017-02-02

Screw compressor

#12
20160319814
2016-11-03

COMPRESSOR

#13
20160084251
2016-03-24

Screw compressor with adjustable internal volume ratio

#14
20150118091
2015-04-30

Rotary compressor with vapor injection system

#15
20140127067
2014-05-08

Screw compressor having a volume ratio being adjusted by end faces extending along from a low-pressure side end wall to discharge edges of a slider

#16
20130216414
2013-08-22

Volume ratio control system and method

#17
20120247139
2012-10-04

Piston operated bypass valve for a screw compressor

#18
20120027632
2012-02-02

Compressor with a bypass port

#19
20100158730
2010-06-24

Compressor

#20
20090285710
2009-11-19

Compressor unloading valve

#21
20090220366
2009-09-03

Slide valve position indicator

#22
20090148332
2009-06-11

Compressor unloading valve

#23
20080304990
2008-12-11

Screw compressor

#24
20080038127
2008-02-14

SCREW COMPRESSOR

#25
20070086908
2007-04-19

Volumetric screw compressor

#26
20060177332
2006-08-10

Step-type capacity varying apparatus of scroll compressor

#27
20060090488
2006-05-04

Apparatus for changing capacity of multi-stage rotary compressor

#28
20060008375
2006-01-12

Screw compressor

#29
20050013702
2005-01-20

Screw compressor