ClassID:

143714

F04C29/128 - 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 of the non-return type of the elastic type, e.g. reed valves

Recent Application in this class:
#1
20260146605
2026-05-28

CO-ROTATING SCROLL COMPRESSOR

#2
20260139675
2026-05-21

COMPRESSOR

#3
20260139673
2026-05-21

CO-ROTATING SCROLL COMPRESSOR

#4
20250180023
2025-06-05

ANTIROTATION REED VALVE SYSTEMS AND METHODS FOR COMPRESSORS

#5
20250122878
2025-04-17

ANTIROTATION REED VALVE SYSTEMS AND METHODS FOR COMPRESSORS

#6
20240240637
2024-07-18

Scroll compressor

#7
20240229795
2024-07-11

COMPRESSOR AND FREEZER

#8
20240102469
2024-03-28

Retainer block bypass hole valve assembly arranged in non-orbiting scroll of a compressor

#9
20240084800
2024-03-14

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

#10
20240052836
2024-02-15

Scroll compressor with center hub

#11
20230400022
2023-12-14

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

#12
20230296092
2023-09-21

Scroll compressor with grooves and auxiliary discharge ports

#13
20230258178
2023-08-17

Scroll compressor and refrigeration cycle apparatus

#14
20230193902
2023-06-22

Scroll compressor

#15
20230066647
2023-03-02

Compressor with injection mechanism

#16
20230042489
2023-02-09

Scroll compressor

#17
20220389929
2022-12-08

Scroll compressor including a front housing, a center housing, and a rear housing having first, second, and third annular walls

#18
20220381242
2022-12-01

Scroll compressor

#19
20220364564
2022-11-17

Scroll compressor having enhanced discharge structure

#20
20210332820
2021-10-28

Vacuum pump

#21
20210301821
2021-09-30

Motor-driven compressor

#22
20210301820
2021-09-30

Scroll compressor having intermediate pressure chamber to supply fluid to compression chambers via two supply passages and two injection ports to limit reduction in compression efficiency

#23
20210285445
2021-09-16

Vapor injection double reed valve plate

#24
20200309134
2020-10-01

Dry-running gas vane pump having a first fluid outlet and a second fluid outlet associated with the pump chamber with the second fluid outlet permanently open to atmosphere without being impeded

#25
20200271114
2020-08-27

Vane rotary compressor

#26
20200248687
2020-08-06

Compressor

#27
20200208634
2020-07-02

Rotary compressor

#28
20200132073
2020-04-30

Air conditioner having compressor including curved suction port and a plurality of exhaust ports

#29
20200116150
2020-04-16

Vacuum pump reed valve which will reduce cold start torque

#30
20200063737
2020-02-27

Asymmetrical scroll compressor

#31
20200063736
2020-02-27

Compressor having injection function

#32
20200056611
2020-02-20

Vane pump including pressure relief groove

#33
20200032797
2020-01-30

Fluid compressor having discharge port and valve

#34
20200018314
2020-01-16

Compressor with exhaust structure having multiple rotating plates each containing exhaust ports with corresponding exhaust valves

#35
20190360490
2019-11-28

Scroll compressor having enhanced discharge structure

#36
20190323506
2019-10-24

Motor vehicle vacuum pump arrangement

#37
20190277285
2019-09-12

Compressor with discharge valve

#38
20190093656
2019-03-28

Automotive vacuum pump

#39
20180372104
2018-12-27

Compressor having round part placed near outlet port

#40
20180363649
2018-12-20

Scroll compressor having sub-discharge port with involute-shaped opening

#41
20180291906
2018-10-11

MOTOR VEHICLE VACUUM PUMP

#42
20180238331
2018-08-23

Motor vehicle vacuum pump

#43
20180223823
2018-08-09

Compressor discharge valve assembly

#44
20180202440
2018-07-19

Scroll compressor having check valve and passage that communicates a discharge port with a discharge space when the check valve is closed

#45
20180187682
2018-07-05

Scroll compressor having a capacity variable device

#46
20180087508
2018-03-29

Scroll compressor including valve having multiple arms

#47
20180023567
2018-01-25

Rotary compressor

#48
20180023566
2018-01-25

Rotary screw vacuum pumps

#49
20170335848
2017-11-23

Rotary compressor having communication path hole overlap with discharge chamber concave portion

#50
20170138361
2017-05-18

Compressor having a check valve in the injection passage

#51
20170097002
2017-04-06

Fluid compressor having discharge valve and valve retainer

#52
20170030357
2017-02-02

Cylinder-rotation compressor with a discharge valve

#53
20170009770
2017-01-12

Motor vehicle vacuum pump

#54
20160312783
2016-10-27

Vacuum pump outlet valve

#55
20160252094
2016-09-01

Compressor

#56
20160230765
2016-08-11

Scroll compressor

#57
20160201677
2016-07-14

Refrigerant filling rotary compressor

#58
20160201673
2016-07-14

Discharge valve and compressor comprising same

#59
20160177953
2016-06-23

Scroll compressor having valve component arranged in passage of back pressure cavity and providing openings for passage of fluid

#60
20160102667
2016-04-14

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

#61
20160102665
2016-04-14

Scroll compressor

#62
20160090986
2016-03-31

Scroll compressor

#63
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

#64
20150345493
2015-12-03

Variable volume ratio scroll compressor

#65
20150337841
2015-11-26

Scroll compressor with a shunt pulsation trap

#66
20150252806
2015-09-10

Gas compressor formed with a high-pressure supply hole

#67
20150233375
2015-08-20

Scroll compressor

#68
20150211520
2015-07-30

VANE TYPE VACUUM PUMP

#69
20150192127
2015-07-09

Motor-driven compressor including injection port that delivers intermediate pressure refrigerant to compression chamber

#70
20150176585
2015-06-25

Pressure control valve and scroll compressor

#71
20150147216
2015-05-28

Gas compressor

#72
20150125330
2015-05-07

Compressor

#73
20150017045
2015-01-15

Vacuum pump of vehicle preventing lubricant from reintroducing for reducing operation noise

#74
20140377113
2014-12-25

Pump and/or compressor arrangement including mating, oscillatable vane members for the simultaneous admission and discharge of fluid

#75
20140369878
2014-12-18

Gas compressor with discharge section and sub-discharge section

#76
20140322061
2014-10-30

Check valve for an engine vacuum pump

#77
20140286807
2014-09-25

Vane compressor having a second discharge port that includes an opening portion to a compression space

#78
20140093414
2014-04-03

Rotary compressor having semicircular-step-snap enlarged diameter portion in groove portion of end plate closing end portion of cylinder

#79
20130315768
2013-11-28

Scroll refrigeration compressor with improved retaining means and bypass valves

#80
20130309118
2013-11-21

Scroll refrigeration compressor with confluent bypass passage and flow passage

#81
20130302198
2013-11-14

Scroll refrigeration compressor with anti-return device

#82
20130251578
2013-09-26

Rotary vacuum pump with a discharge compensating channel

#83
20130108496
2013-05-02

Scroll compressor with bypass holes

#84
20130089448
2013-04-11

Scroll refrigeration compressor with a delivery valve and a bypass valve

#85
20130071276
2013-03-21

Valve arrangement for a scroll refrigeration compressor

#86
20120174618
2012-07-12

Rotary compressor and refrigeration cycle apparatus

#87
20120060683
2012-03-15

VACUUM PUMP WITH VENTILATING MEANS

#88
20110206548
2011-08-25

Compressor including valve assembly

#89
20110064590
2011-03-17

Valve Arrangement for Peripherally Pivoted Oscillating Vane Machine

#90
20110038747
2011-02-17

AUTOMATIC VOLUME RATIO VARIATION FOR A ROTARY SCREW COMPRESSOR

#91
20100111741
2010-05-06

SCROLL COMPRESSOR

#92
20100034675
2010-02-11

Vacuum pump provided with a device for its deactivation

#93
20100028189
2010-02-04

Rotary pump with vane support divided into two half shells

#94
20100028183
2010-02-04

Valve assembly for scroll compressor

#95
20090297376
2009-12-03

Rotary vacuum pump with a discharge compensating channel

#96
20090277216
2009-11-12

Mounting structure of discharge valve in scroll compressor

#97
20090180911
2009-07-16

Revolving vane compressor

#98
20090148325
2009-06-11

Rotary type compressor

#99
20090074600
2009-03-19

Mounting structure of discharge valve in rotary compressor

#100
20080199342
2008-08-21

Vacuum pump for a vehicle with multiple one-way valves

#101
20080113538
2008-05-15

Compressor with discharge valve arrangement

#102
20080107555
2008-05-08

Scroll compressor with vapor injection and unloader port

#103
20070217938
2007-09-20

Scroll compressor with bypass apparatus

#104
20070160486
2007-07-12

Variable capacity rotary compressor

#105
20070148026
2007-06-28

Compressor

#106
20070148025
2007-06-28

Compressor

#107
20070140888
2007-06-21

Compressor

#108
20070110604
2007-05-17

Scroll machine

#109
20060269433
2006-11-30

Discharge port for a scroll compressor

#110
20060099098
2006-05-11

Discharge valve system of scroll compressor

#111
20060008374
2006-01-12

Vane-type rotary apparatus with split vanes

#112
20050175494
2005-08-11

Discharge valve mechanism for variable displacement compressor

#113
20050172646
2005-08-11

Refrigerant compressor, and refrigerating machine using the same

#114
20050142019
2005-06-30

Discharge valve device of a compressor

#115
20050069444
2005-03-31

Scroll machine

#116
20050013701
2005-01-20

Fluid machine served as expansion device and compression device

#117
20050008521
2005-01-13

Check valve of scroll compressor

#118
18541828
2024-12-10

Compressor and valve assembly

#119
18485712
2024-12-31

Antirotation reed valve systems and methods for compressors

#120
18171521
2024-06-11

Injection valve assembly for a compressor

#121
18115355
2024-04-23

Compressor and valve assembly

#122
17886047
2023-12-19

Scroll compressor with center hub

#123
17654467
2022-11-29

Compressor and air conditioner