ClassID:

143712

F04C29/124 - CPC Classification

Classification description:

Component parts, details or accessories of pumps or pumping installations, not provided for in groups  - ; Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps

Sub-classes:
Recent Application in this class:
#1
20260117774
2026-04-30

COMPRESSOR

#2
20260009383
2026-01-08

SCREW COMPRESSOR

#3
20250341263
2025-11-06

ELECTRO-MAGNETIC THROTTLE VALVE WITH INTEGRATED BLOWDOWN CONDUIT

#4
20250101977
2025-03-27

KIDNEY PORT CONFIGURATIONS IN PORT PLATES FOR BALANCED VANES

#5
20250075701
2025-03-06

Back pressure regulating valve and an electric type of a scroll compressor with the same

#6
20250052244
2025-02-13

Compressor Having Shutdown Valve Assembly

#7
20250003408
2025-01-02

Scroll compressor

#8
20240328530
2024-10-03

ELECTRO-MAGNETIC THROTTLE VALVE

#9
20240271620
2024-08-15

Scroll compressor and refrigeration apparatus

#10
20240084800
2024-03-14

Scroll compressor including a valve plate having a surface pressure enhancement portion protruding toward an injection valve

#11
20240077080
2024-03-07

Scroll compressor

#12
20240052836
2024-02-15

Scroll compressor with center hub

#13
20230400024
2023-12-14

Scroll compressor

#14
20230400022
2023-12-14

Scroll compressor having at least one valve fixedly inserted into block insertion groove of non-orbiting scroll

#15
20230296097
2023-09-21

Modulated Compressor And Valve Assembly

#16
20230279861
2023-09-07

Scroll compressor

#17
20230250822
2023-08-10

Compressor with a suction valve having a spring, a seal, and a cylindrical suction valve body

#18
20230213033
2023-07-06

Scroll compressor with a pressure relief low-speed rotation structure

#19
20230204035
2023-06-29

Compressor

#20
20230144667
2023-05-11

Multistage compressor system with intercooler

#21
20230143495
2023-05-11

COMPRESSOR

#22
20230137074
2023-05-04

Vane rotary compressor

#23
20230125736
2023-04-27

Rotary compressor

#24
20230088672
2023-03-23

Rotary compressor having improved vane chattering performance

#25
20230055642
2023-02-23

Compressor modulation system with multi-way valve

#26
20230036027
2023-02-02

Compressor modulation system with multi-way valve

#27
20220381242
2022-12-01

Scroll compressor

#28
20220290668
2022-09-15

Scroll compressor

#29
20220228590
2022-07-21

Compressor having seal assembly

#30
20220178374
2022-06-09

Diaphragm pump with heat dissipation mechanism

#31
20220136507
2022-05-05

Compressor and air conditioning system

#32
20220136435
2022-05-05

ENTRAINMENT COMPRESSION SYSTEM FOR JET ENGINE

#33
20220049701
2022-02-17

Air conditioner and compressor

#34
20220025884
2022-01-27

High pressure scroll compressor

#35
20210172440
2021-06-10

Pump having liquid blades and an associated method of pumping

#36
20210054845
2021-02-25

Multi-stage compressor and method of controlling the same

#37
20200408207
2020-12-31

Suction valve assembly for a compressor and a compressor having a suction valve assembly

#38
20200340476
2020-10-29

Scroll compressor

#39
20200277955
2020-09-03

SCROLL COMPRESSOR

#40
20200263692
2020-08-20

Compressor having bypassing portion

#41
20200232464
2020-07-23

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

#42
20200200787
2020-06-25

System and method for engine speed measurement

#43
20200173563
2020-06-04

Inlet valve for the inlet of a compressor element and compressor and compressor element equipped with it

#44
20200173442
2020-06-04

ZORO COMPRESSOR

#45
20200173438
2020-06-04

Multistage compressor system with intercooler

#46
20200166036
2020-05-28

Method and device for expanding a gas with a reciprocating-piston machine

#47
20200149529
2020-05-14

Foldable Handheld Pump

#48
20200132074
2020-04-30

Rotary compressors with variable speed and volume control

#49
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

#50
20190345936
2019-11-14

Vane-type gas pump

#51
20190301465
2019-10-03

Compressor system and system for maintaining a desired oil level

#52
20190277285
2019-09-12

Compressor with discharge valve

#53
20190271313
2019-09-05

Vane pump

#54
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

#55
20190242385
2019-08-08

Compressor and valve assembly

#56
20190242384
2019-08-08

MOTOR OPERATED COMPRESSOR

#57
20190211828
2019-07-11

Scroll compressor with back pressure control valve

#58
20190154038
2019-05-23

Pressure changing device

#59
20190093656
2019-03-28

Automotive vacuum pump

#60
20190024662
2019-01-24

Compressor and refrigeration system having same

#61
20190024661
2019-01-24

Concentric vane compressor

#62
20190024658
2019-01-24

Rotary compressor

#63
20180372104
2018-12-27

Compressor having round part placed near outlet port

#64
20180187678
2018-07-05

Austempered grey iron scroll and method of making thereof

#65
20180172005
2018-06-21

Electronically-controlled compressed air system

#66
20180154869
2018-06-07

Air compressor and extraneous-matter removing apparatus

#67
20180135632
2018-05-17

Refrigerant path holes in a rotary compressor

#68
20180135631
2018-05-17

Screw compressor and a compressor body thereof

#69
20180135627
2018-05-17

Fluid working systems

#70
20180128270
2018-05-10

Scroll compressor and refrigeration cycle apparatus

#71
20180112667
2018-04-26

Combination of motor and vacuum pump with an exhaust flow

#72
20180085799
2018-03-29

Exhaust system, semiconductor manufacturing equipment, and method for operating the exhaust system

#73
20180023393
2018-01-25

Oldham coupling for a scroll compressor

#74
20180022191
2018-01-25

Suction dampening device with internal dampening for vehicle air conditioning compressor

#75
20180017060
2018-01-18

Variable volume ratio compressor

#76
20170356446
2017-12-14

Fluid pressure changing device

#77
20170342984
2017-11-30

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

#78
20170342983
2017-11-30

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

#79
20170314560
2017-11-02

Compressor, air conditioning system, and a method of controlling a compressor

#80
20170314559
2017-11-02

Concentric vane compressor

#81
20170298966
2017-10-19

Magnetically controlled valve and pump devices and methods of using the same

#82
20170292616
2017-10-12

Inlet valve for a compressor

#83
20170284393
2017-10-05

Compressor with main bearing, partition plate, and fixed and orbiting scrolls therebetween

#84
20170276137
2017-09-28

Exhaust bearing seat, screw compressor and air-conditioning unit

#85
20170268510
2017-09-21

Compressor valve system and assembly

#86
20170175742
2017-06-22

Rotary compressor

#87
20170167485
2017-06-15

Scroll compressor with decompression member

#88
20170159659
2017-06-08

High volume vacuum pump for continuous operation

#89
20170122319
2017-05-04

Vacuum pump system

#90
20170097002
2017-04-06

Fluid compressor having discharge valve and valve retainer

#91
20170067465
2017-03-09

Air compressor

#92
20170045049
2017-02-16

Compressor

#93
20170045048
2017-02-16

Multi-stage pump assembly having a pressure controlled valve for controlling recirculation of fluid from the pump stage outlet to the pump stage inlet

#94
20170030356
2017-02-02

Screw compressor

#95
20170030354
2017-02-02

Compressor with thermally-responsive modulation system

#96
20170030352
2017-02-02

ECCENTRIC MOVABLE VANE PUMP

#97
20160369804
2016-12-22

Suction/compression assembly for a waste material aspiration system

#98
20160363122
2016-12-15

Ring weld blocker in discharge check valve

#99
20160348678
2016-12-01

Fluid pressure changing device

#100
20160327038
2016-11-10

Fluid working systems

#101
20160298628
2016-10-13

Vacuum pump

#102
20160201678
2016-07-14

Scroll compressor

#103
20160201677
2016-07-14

Refrigerant filling rotary compressor

#104
20160108916
2016-04-21

Rotor with a resin layer that has circular or spiral grooves

#105
20160102667
2016-04-14

Scroll compressor having a fixed scroll pressed in an axial direction against an orbiting scroll

#106
20160102665
2016-04-14

Scroll compressor

#107
20160090986
2016-03-31

Scroll compressor

#108
20160084250
2016-03-24

Scroll compressor in which a fixed scroll and an orbiting scroll are placed between a partition plate and a main bearing

#109
20150369246
2015-12-24

Scroll compressor

#110
20150345498
2015-12-03

Vacuum pump for a motor vehicle

#111
20150337841
2015-11-26

Scroll compressor with a shunt pulsation trap

#112
20150316060
2015-11-05

COMPRESSOR

#113
20150316057
2015-11-05

Scroll compressor

#114
20150316056
2015-11-05

Scroll compressor having a back pressure plate and a gasket coupled to a fixed scroll plate by at least one coupling member

#115
20150252806
2015-09-10

Gas compressor formed with a high-pressure supply hole

#116
20150093273
2015-04-02

Rotary compressors with variable speed and volume control

#117
20150076381
2015-03-19

System and method for controlling a compressor inlet valve

#118
20140325986
2014-11-06

Rotary engine and process

#119
20140193284
2014-07-10

Air regulator, in particular for screw compressors

#120
20140147300
2014-05-29

Rocking piston compressor with sound dissipation

#121
20140134030
2014-05-15

Compressor valve system and assembly

#122
20140119968
2014-05-01

Rotary compressor having discharge groove to communicate compression chamber with discharge port near vane groove

#123
20140090412
2014-04-03

Motor-driven compressor and air conditioner

#124
20130136642
2013-05-30

Scroll refrigeration compressor

#125
20130136638
2013-05-30

Gas inlet valve for a compressor, compressor comprising a gas inlet valve of this type and method for operating a compressor comprising a gas inlet valve of this type

#126
20130091892
2013-04-18

Manual Vi adjustment mechanism for screw compressors

#127
20130081710
2013-04-04

Direct-suction compressor

#128
20120031141
2012-02-09

Fluid Machine, and Refrigerant Circuit and Waste Heat Utilization Device Using the Fluid Machine

#129
20120009076
2012-01-12

Scroll compressor

#130
20110293456
2011-12-01

Scroll machine having axially biased scroll

#131
20110293451
2011-12-01

Vacuum pump

#132
20110103988
2011-05-05

Compressor having capacity modulation system

#133
20100284848
2010-11-11

Screw compressor with adjacent helical grooves selectively opening to first and second ports

#134
20100278678
2010-11-04

SCREW COMPRESSOR

#135
20100260639
2010-10-14

Screw compressor including a single screw rotor with first and second screw groove being bilaterally symmetric

#136
20100260620
2010-10-14

Screw compressor with capacity control slide valve

#137
20100183452
2010-07-22

Adaptor for an air compressor and an air compressor

#138
20090185935
2009-07-23

Scroll machine

#139
20090169405
2009-07-02

Compressor having a simplified structure with a reduced size

#140
20060127236
2006-06-15

Smart control valve for compressors

#141
20050180865
2005-08-18

Vacuum pump

#142
18130119
2024-05-28

Electro-magnetic throttle valve with integrated blowdown conduit

#143
17886047
2023-12-19

Scroll compressor with center hub

#144
17880801
2023-01-31

Rotary compressor