ClassID:

143685

F04C29/0035 - CPC Classification

Classification description:

Component parts, details or accessories of pumps or pumping installations, not provided for in groups  - ; Systems for the equilibration of forces acting on the pump Equalization of pressure pulses

Recent Application in this class:
#1
20240384718
2024-11-21

POSITIVE DISPLACEMENT ROOTS BLOWER NOISE SUPPRESSION

#2
20240318654
2024-09-26

SCROLL COMPRESSOR

#3
20240318653
2024-09-26

SCROLL COMPRESSOR

#4
20240191713
2024-06-13

Slide Valve for a Twin-Screw Compressor

#5
20240151227
2024-05-09

Scroll compressor

#6
20240077080
2024-03-07

Scroll compressor

#7
20230137362
2023-05-04

Rotary compressor

#8
20230097255
2023-03-30

Screw compressor with a shunt-enhanced decompression and pulsation trap (SEDAPT)

#9
20230013325
2023-01-19

Device for recirculating an at least partially gaseous composition containing hydrogen and fuel cell system

#10
20220145885
2022-05-12

Positive displacement roots blower noise suppression

#11
20220042510
2022-02-10

Screw compressor slide valve and screw compressor with gas pulsation attenuation function

#12
20210404470
2021-12-30

Axial pressure relief in slide bearings of pumps

#13
20200291942
2020-09-17

Slide valve for a twin-screw compressor

#14
20200109713
2020-04-09

INTEGRATED ROTARY POSITIVE-DISPLACEMENT MACHINERY

#15
20190323502
2019-10-24

Scroll compression device having a sealing device, and scroll compressor including such a scroll compression device

#16
20190309753
2019-10-10

Scroll compressor having discharge cover providing a space to guide a discharge flow from a discharge port to a discharge passgae formed by a plurality of discharge holes

#17
20190111359
2019-04-18

Modular heat exchanger, moisture separator and pulsation dampener for a multi-stage fluid compressor

#18
20180335032
2018-11-22

Displacement machine including only one displacement spiral passage and gas connection line in communication with a counter pressure chamber

#19
20180313343
2018-11-01

DYNAMIC VARIABLE ORIFICE FOR COMPRESSOR PULSATION CONTROL

#20
20180291905
2018-10-11

Pulsation mufflers for compressors

#21
20180274542
2018-09-27

BEARING PLATE NOISE DAMPER

#22
20180230999
2018-08-16

Volumetric lobe compressor for equipment collecting waste material

#23
20180142678
2018-05-24

Dynamic variable orifice for compressor pulsation control

#24
20180135627
2018-05-17

Fluid working systems

#25
20180094629
2018-04-05

Pulsation damper for compressors

#26
20180093593
2018-04-05

DEVICE FOR DAMPING PRESSURE FLUCTUATIONS

#27
20180080447
2018-03-22

Electric compressor

#28
20180051698
2018-02-22

Compressor noise reduction

#29
20180023572
2018-01-25

Device for conditioning flow of working fluids

#30
20170335846
2017-11-23

Gear Pump

#31
20170321698
2017-11-09

System and Method for Improved Performance of Gerotor Compressors and Expanders

#32
20170268514
2017-09-21

Scroll device having a pressure plate

#33
20170130718
2017-05-11

Fluid ring compressor

#34
20160327038
2016-11-10

Fluid working systems

#35
20160108733
2016-04-21

Silent gear pump or motor suppressing troubles of trapping fluid

#36
20160017885
2016-01-21

Electric motor vehicle vacuum pump arrangement

#37
20150374950
2015-12-31

Mechanical ventilation system utilizing bias valve

#38
20150361982
2015-12-17

Shunt pulsation trap for positive-displacement machinery

#39
20150361981
2015-12-17

Scroll compressor with a resonator

#40
20150337841
2015-11-26

Scroll compressor with a shunt pulsation trap

#41
20150337840
2015-11-26

Compressor having external shell with vibration isolation and pressure balance

#42
20150300353
2015-10-22

Pulsation dampening assembly

#43
20150292505
2015-10-15

Automotive volumetric vacuum pump

#44
20150267702
2015-09-24

Gerotor with reduced leakage

#45
20150104342
2015-04-16

Scroll-type compressor with gas passage formed in orbiting plate to restrict flow from compression chamber to back pressure chamber

#46
20150078928
2015-03-19

Compressor, air conditioner system comprising the compressor and heat pump water heater system

#47
20150064042
2015-03-05

Gas compressor having an asymmetric cylinder chamber

#48
20150004015
2015-01-01

Sound absorber for refrigerant compressor

#49
20140284131
2014-09-25

Work vehicle with fluid attentuator

#50
20140250937
2014-09-11

Hermetic-type compressor and refrigeration cycle apparatus

#51
20140227122
2014-08-14

Claw pump with relief space

#52
20140090412
2014-04-03

Motor-driven compressor and air conditioner

#53
20130283595
2013-10-31

Roots-type blower rotor alignment method

#54
20130068091
2013-03-21

Hydraulic pump/motor and method of suppressing pulsation of hydraulic pump/motor

#55
20120263615
2012-10-18

Scroll Fluidic Device

#56
20120251369
2012-10-04

Scroll compressor and method for machining discharge port of the same

#57
20120237378
2012-09-20

Shunt pulsation trap for cyclic positive displacement (PD) compressors

#58
20120183425
2012-07-19

Valveless vane compressor

#59
20120171069
2012-07-05

Screw compressor with a shunt pulsation trap

#60
20120171060
2012-07-05

Compressor

#61
20120148433
2012-06-14

Floating apparatus for scroll compressors

#62
20120085119
2012-04-12

Refrigerant compressor and heat pump apparatus

#63
20120085118
2012-04-12

Refrigerant compressor and heat pump apparatus

#64
20120045349
2012-02-23

Pressure pulsation dampener

#65
20120020824
2012-01-26

ROOTS SUPERCHARGER WITH A SHUNT PULSATION TRAP

#66
20110300014
2011-12-08

Rotary lobe blower (pump) or vacuum pump with a shunt pulsation trap

#67
20110262290
2011-10-27

Screw compressor with asymmetric ports

#68
20110243761
2011-10-06

Pulsation Dampener for Gas Compressors Having Selectable Size Choke Openings

#69
20110088697
2011-04-21

Mechanical ventilation system utilizing bias valve

#70
20110016895
2011-01-27

Methods and Systems for Injecting Liquid Into a Screw Compressor for Noise Suppression

#71
20100209280
2010-08-19

SCREW COMPRESSOR PULSATION DAMPER

#72
20100202904
2010-08-12

Screw compressor pulsation damper

#73
20100135839
2010-06-03

SCREW COMPRESSOR WITH INTEGRAL BEARING COVER AND DISCHARGE PLENUM DIVIDER

#74
20100111736
2010-05-06

Roots-type blower rotor alignment apparatus

#75
20090175740
2009-07-09

Compressor having muffler outlets orthogonally arranged relative to the suction mouth

#76
20090142213
2009-06-04

Roots-type blower reduced acoustic signature method and apparatus

#77
20090116977
2009-05-07

Compressor With Muffler

#78
20090062018
2009-03-05

Torsion damping mechanism for a supercharger

#79
20090013714
2009-01-15

Refrigeration system

#80
20080260547
2008-10-23

Compressor sound suppression

#81
20080060622
2008-03-13

Supercharger with housing internal noise attenuation

#82
20080053438
2008-03-06

Portable ventilator system

#83
20070183914
2007-08-09

Suction baffle for scroll compressors

#84
20070163589
2007-07-19

Portable ventilator system

#85
20070092393
2007-04-26

Gas release port for oil-free screw compressor

#86
20070065324
2007-03-22

Rotary compressor with low pressure space surrounding outer peripheral face of compression mechanism and discharge passage passing through housing

#87
20070000490
2007-01-04

Portable ventilator system

#88
20060254309
2006-11-16

Fluid machine

#89
20060249153
2006-11-09

Mechanical ventilation system utilizing bias valve

#90
20060243520
2006-11-02

Screw compressor with an acoustic wave damping device

#91
20060213518
2006-09-28

Portable ventilator system

#92
20060165543
2006-07-27

Screw compressor acoustic resonance reduction

#93
20060127235
2006-06-15

Compressor sound suppression

#94
20060065478
2006-03-30

Compressor sound suppression

#95
20050112013
2005-05-26

Method and apparatus for reducing noise in a roots-type blower

#96
20050106054
2005-05-19

Compressor discharge chamber with baffle plate

#97
20050084397
2005-04-21

Gas compressor

#98
20050051168
2005-03-10

Portable ventilator system