Patents-Review.com
ClassID:

143672 ⎘

F04C28/18 - CPC Classification

Classification description:

Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the volume of the working chamber

Sub-classes:
Recent Application in this class:
#1
20250327448
2025-10-23

Screw Compressor

 #2
20250320871
2025-10-16

COMPRESSOR AND CONTROLLING METHOD OF VOLUME RATIO THEREOF

 #3
20250283466
2025-09-11

SCROLL COMPRESSOR AND AIR CONDITIONING DEVICE

 #4
20230136689
2023-05-04

PUMP WITH VARIABLE SUCTION/DISCHARGE AMOUNT AND DRIVE DEVICE COMPOSED OF THE PUMP AND DRIVING METHOD THEREOF

 #5
20220299031
2022-09-22

Variable volume ratio screw compressor

 #6
20220049701
2022-02-17

Air conditioner and compressor

 #7
20220025887
2022-01-27

Variable capacity compressor

 #8
20210180598
2021-06-17

Method of improved control for variable volume ratio valve

 #9
20210164470
2021-06-03

Compressor having capacity modulation assembly

 #10
20210108845
2021-04-15

Method and device for controlling capacity change of compressor, and smart home appliance

 #11
20200232464
2020-07-23

Variable-capacity control structure, compressor and variable-capacity control method thereof

 #12
20200208637
2020-07-02

Variable volume ratio screw compressor

 #13
20200200175
2020-06-25

Method of improved control for variable volume ratio valve

 #14
20200080560
2020-03-12

Control device for internal combustion engine

 #15
20200080559
2020-03-12

Two-stage screw rotor machine with slide valves

 #16
20190360489
2019-11-28

Scroll compressor having a valve assembly controlling the opening/closing valve to open and close communication passage and bypass holes on fixed scroll

 #17
20190249667
2019-08-15

Scroll compressor that includes a non-orbiting scroll member having a connection passage portion connected first valve assembly and second valve assembly

 #18
20190186491
2019-06-20

Variable volume ratio compressor

 #19
20190040860
2019-02-07

Control flowrate regulating valve specifically for scroll compressor inside vehicle air conditioner or heat pump

 #20
20180363651
2018-12-20

Scroll compressor

 #21
20180223848
2018-08-09

Co-rotating compressor

 #22
20180149155
2018-05-31

Compressor having capacity modulation assembly

 #23
20180038370
2018-02-08

Variable volume ratio compressor

 #24
20180038369
2018-02-08

Variable volume ratio compressor

 #25
20180022191
2018-01-25

Suction dampening device with internal dampening for vehicle air conditioning compressor

 #26
20180017060
2018-01-18

Variable volume ratio compressor

 #27
20170342984
2017-11-30

Scroll compressor that includes a non-orbiting scroll having a bypass hole

 #28
20170342983
2017-11-30

Scroll compressor that includes a non-orbiting scroll having a bypass hole

 #29
20170268505
2017-09-21

Eccentric screw pump with split stator housing

 #30
20170241690
2017-08-24

Compressor Capacity Modulation System For Multiple Compressors

 #31
20170101988
2017-04-13

Integrated pressure plate and port plate for pump

 #32
20170030355
2017-02-02

Air conditioner with stacked parallel and serial compressor cylinders

 #33
20160312611
2016-10-27

Multiple vane roto-dynamic variable displacement kinetic system

 #34
20160298627
2016-10-13

Compressor temperature control systems and methods

 #35
20160273538
2016-09-22

Variable volume ratio compressor

 #36
20160177947
2016-06-23

VANE PUMP

 #37
20160169227
2016-06-16

Compressor

 #38
20160108733
2016-04-21

Silent gear pump or motor suppressing troubles of trapping fluid

 #39
20160076543
2016-03-17

Compressor having capacity modulation assembly

 #40
20160003129
2016-01-07

BEARING PLATE BLEED PORT FOR ROOTS-TYPE SUPERCHARGERS

 #41
20150354570
2015-12-10

Displacement type rotary machine with controlling gears

 #42
20150345493
2015-12-03

Variable volume ratio scroll compressor

 #43
20150240806
2015-08-27

Rotary pump with a plastic composite structure

 #44
20150192128
2015-07-09

Compressor with rotating cam and sliding end vanes

 #45
20140219846
2014-08-07

Capacity modulated scroll compressor

 #46
20140072466
2014-03-13

Compressor having capacity modulation assembly

 #47
20120041664
2012-02-16

Method for powering an apparatus

 #48
20120027632
2012-02-02

Compressor with a bypass port

 #49
20110268597
2011-11-03

Compressor having capacity modulation assembly

 #50
20110204654
2011-08-25

Engine and supercharger

 #51
20100254841
2010-10-07

Compressor having capacity modulation assembly

 #52
20090074602
2009-03-19

Rotary type fluid machine

 #53
20090028724
2009-01-29

Self-modulated scroll compressor with optimized built-in volume ratio

 #54
20080307808
2008-12-18

Capacity variable device for rotary compressor and driving method of air conditioner having the same

 #55
20060073057
2006-04-06

Variable capacity type orbiting vane compressor