ClassID:

142962

F04B39/0055 - CPC Classification

Classification description:

Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups -; Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes

Sub-classes:
Recent Application in this class:
#1
20250180009
2025-06-05

MINIATURE VACUUM PUMP AND MINIATURE VACUUM DEVICE

#2
20250075604
2025-03-06

FRACTURING APPARATUS AND CONTROL METHOD THEREOF, FRACTURING SYSTEM

#3
20240159230
2024-05-16

Compressor intake muffler and filter

#4
20240110557
2024-04-04

Linear compressor

#5
20240110555
2024-04-04

SOUND REDUCTION DEVICE FOR ROCKING PISTON COMPRESSORS

#6
20240035363
2024-02-01

Fracturing apparatus and control method thereof, fracturing system

#7
20230366387
2023-11-16

Device for Decoupling and for Vibration Control

#8
20230220845
2023-07-13

Pump system, use of a pneumatic resistance and medical device or gas-measuring device

#9
20230204034
2023-06-29

Screw compressor configured to compress a process gas and dampen pulsation waves

#10
20230097255
2023-03-30

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

#11
20230067947
2023-03-02

Silencer

#12
20230022916
2023-01-26

Apparatus for damping pressure pulsation for a compressor of a gaseous fluid

#13
20220412338
2022-12-29

PERSONAL AIR SAMPLING PUMP ASSEMBLY

#14
20220397109
2022-12-15

Discharge valve arrangement for a refrigerant compressor

#15
20220389918
2022-12-08

Compressor

#16
20220381238
2022-12-01

PUMP NOISE ATTENUATOR AND METHOD THEREOF

#17
20220364553
2022-11-17

Compressor

#18
20220333471
2022-10-20

Fracturing apparatus and control method thereof, fracturing system

#19
20220298906
2022-09-22

Fracturing apparatus and control method thereof, fracturing system

#20
20220275795
2022-09-01

Miniature electromagnetic water pump

#21
20220243712
2022-08-04

Connecting structure, exhaust silencer, silencer, and compressor

#22
20220220957
2022-07-14

Method and system for damping flow pulsation

#23
20220136493
2022-05-05

Apparatuses, systems, and methods for improved performance of a pressurized system

#24
20220136492
2022-05-05

Linear compressor and refrigerator including same

#25
20210356175
2021-11-18

Reciprocating-type compressor for refrigeration and/or conditioning and/or heat pump system

#26
20210340966
2021-11-04

Compressor head fixing device, compressor and refrigeration device

#27
20210246890
2021-08-12

Linear compressor

#28
20210231114
2021-07-29

Compressor intake muffler and filter

#29
20210079905
2021-03-18

Method of reducing air compressor noise

#30
20200392955
2020-12-17

Personal air sampling pump assembly with diaphragm damping portion

#31
20200362844
2020-11-19

Pulsation damper

#32
20200332799
2020-10-22

Motor vehicle vacuum pump arrangement

#33
20200224647
2020-07-16

Precise control of suction damping device in a variable displacement compressor

#34
20200116138
2020-04-16

Linear compressor

#35
20200072207
2020-03-05

Belt guard comprising a compressor silencer

#36
20200025187
2020-01-23

Linear compressor

#37
20200003201
2020-01-02

Linear compressor

#38
20190316589
2019-10-17

Compressor having muffler function

#39
20190309743
2019-10-10

Linear compressor

#40
20190257301
2019-08-22

Device for damping pressure pulsations for a compressor of a gaseous fluid

#41
20190234390
2019-08-01

Pressure pulsation traps

#42
20190219046
2019-07-18

Introduced in a system for connecting refrigerant fluid discharge tubes to cylinder caps of hermetic compressors, and corresponding process of performing thereof

#43
20190195211
2019-06-27

Apparatus for reducing suction pulsation and swash plate type compressor comprising same

#44
20190178239
2019-06-13

Apparatuses, Systems, and Methods for Improved Performance of a Pressurized System

#45
20190170131
2019-06-06

Intake pulsation damper of swash plate-type compressor

#46
20190170128
2019-06-06

Precise control of suction damping device in a variable displacement compressor

#47
20190111359
2019-04-18

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

#48
20190032650
2019-01-31

Apparatus and method for gas compression

#49
20180355773
2018-12-13

Silencer and ejector in which silencer is used

#50
20180291905
2018-10-11

Pulsation mufflers for compressors

#51
20180230983
2018-08-16

Compressor intake muffler and filter

#52
20180142678
2018-05-24

Dynamic variable orifice for compressor pulsation control

#53
20180135615
2018-05-17

Miniature vacuum/pressure diaphragm pumps with noise mitigation boot

#54
20180135612
2018-05-17

Linear compressor

#55
20180106512
2018-04-19

Closed compressor and refrigeration device using the same

#56
20180094629
2018-04-05

Pulsation damper for compressors

#57
20180094625
2018-04-05

RESONATOR ELEMENT IN A SUCTION FILTER FOR HERMETIC COMPRESSOR AND METHOD OF MANUFACTURE OF A RESONATOR ELEMENT

#58
20180093593
2018-04-05

DEVICE FOR DAMPING PRESSURE FLUCTUATIONS

#59
20180073495
2018-03-15

Compressor housing having sound control chambers

#60
20180045195
2018-02-15

Suction acoustic filter for compressor

#61
20170356434
2017-12-14

System for connecting refrigerant fluid discharge tubes to cylinder caps of hermetic compressors and process thereof

#62
20170356432
2017-12-14

Suction acoustic filter and suction line including suction acoustic filter

#63
20170335833
2017-11-23

Systems and methods for hydrate management

#64
20170321692
2017-11-09

Linear compressor

#65
20170321682
2017-11-09

Linear compressor

#66
20170321675
2017-11-09

Linear compressor with sound dampening gaskets

#67
20170261115
2017-09-14

Device for a high-pressure pump for a motor vehicle

#68
20170260974
2017-09-14

Discharge Acoustic Filter, Manufacturing Process of Discharge Acoustic Filter and Hermetic Compressor

#69
20170234552
2017-08-17

Muffler for air-conditioning apparatus and air-conditioning apparatus including the same

#70
20170184330
2017-06-29

Compressor

#71
20170184093
2017-06-29

Pump system, use of a pneumatic resistance and medical device or gas-measuring device

#72
20170152841
2017-06-01

Exhaust air conduit for a coating agent pump

#73
20170022985
2017-01-26

Personal air sampling pump assembly

#74
20160327038
2016-11-10

Fluid working systems

#75
20160312773
2016-10-27

Refrigerant Line Muffler

#76
20160298618
2016-10-13

Compressor intake muffler and filter

#77
20160186735
2016-06-30

Compressor with an acoustic attenuator device

#78
20160177936
2016-06-23

System and method for reducing at least one of airflow turbulence and pressure fluctuation proximate a valve

#79
20160131125
2016-05-12

Reciprocating compressor and method for assembling the same

#80
20160123321
2016-05-05

Variable displacement compressor with an oil check valve

#81
20150361982
2015-12-17

Shunt pulsation trap for positive-displacement machinery

#82
20150330380
2015-11-19

Tank dampening device

#83
20150330378
2015-11-19

Suction muffler located inside a piston of a linear compressor

#84
20150300350
2015-10-22

High-efficiency double-intake air pump

#85
20150292494
2015-10-15

Pressure regulating apparatus including conduit

#86
20150275884
2015-10-01

Gas discharge system for a refrigeration compressor and a refrigeration compressor

#87
20150275883
2015-10-01

Thermal insulation system for the discharge of gas in a refrigeration compressor

#88
20150275882
2015-10-01

NOISE SUPPRESSOR FOR VEHICLE SUSPENSION SYSTEM

#89
20150219086
2015-08-06

GAS DISCHARGE ARRANGEMENT FOR A REFRIGERATION COMPRESSOR

#90
20150219085
2015-08-06

Hermetic compressor and refrigeration apparatus

#91
20150204318
2015-07-23

Air compressor with improved noise reduction performance

#92
20150204317
2015-07-23

Dynamic variable orifice for compressor pulsation control

#93
20150198149
2015-07-16

Aerodynamic pressure pulsation dampener

#94
20150176580
2015-06-25

Compressor and valve assembly thereof for reducing pulsation and/or noise

#95
20150176576
2015-06-25

Compressor and discharging muffler thereof

#96
20150167630
2015-06-18

Hydrostatic axial piston machine

#97
20150152857
2015-06-04

Compressor housing having sound control chambers

#98
20150089999
2015-04-02

Pulsation suppressing air flow system for an air sampling instrument

#99
20150030476
2015-01-29

Pump unit driven by an electric motor

#100
20150030473
2015-01-29

Compressor intake muffler and filter

#101
20150016962
2015-01-15

Tank dampening device

#102
20150016953
2015-01-15

Tank dampening device

#103
20150004014
2015-01-01

Linear compressor

#104
20140345968
2014-11-27

Acoustic filter suitable for reciprocating compressor

#105
20140326533
2014-11-06

Suction chamber

#106
20140212315
2014-07-31

HYPERBOLIC HORN FOR PULSATION FILTER DEVICE USED WITH GAS COMPRESSOR

#107
20140190765
2014-07-10

Device for reducing the noise emitted by a conduit and aircraft conduit equipped with such a device

#108
20140154107
2014-06-05

Apparatuses, Systems, and Methods for Improved Performance of a Pressurized System

#109
20140112804
2014-04-24

Discrete heat-insulated exhaust muffler device and refrigeration compressor using same

#110
20130302194
2013-11-14

HIGH-PRESSURE PUMP

#111
20130280109
2013-10-24

Modular discharge silencer for vehicle-mounted compressor

#112
20130065503
2013-03-14

Air Ducting Shroud For Cooling An Air Compressor Pump And Motor

#113
20130064689
2013-03-14

Method of reducing air compressor noise

#114
20130064643
2013-03-14

Tank dampening device

#115
20130064642
2013-03-14

Tank dampening device

#116
20130064641
2013-03-14

Air ducting shroud for cooling an air compressor pump and motor

#117
20130062141
2013-03-14

Compressor intake muffler and filter

#118
20130062140
2013-03-14

Compressor housing having sound control chambers

#119
20130058802
2013-03-07

Low ice pneumatic motor exhaust muffler

#120
20130028758
2013-01-31

Manual selective attenuator

#121
20130008512
2013-01-10

Pump pulsation discharge dampener with curved internal baffle and pressure drop feature creating two internal volumes

#122
20120325356
2012-12-27

Pulsation Attenuation

#123
20120312629
2012-12-13

Expandable chamber acoustic silencer

#124
20120275935
2012-11-01

Inlet Plenum with Shock Wave Suppression

#125
20120189477
2012-07-26

Pump pulsation discharge dampener with dual pressure drop tube assemblies having unequal sizes

#126
20120171069
2012-07-05

Screw compressor with a shunt pulsation trap

#127
20120144671
2012-06-14

GAS COMPRESSOR WITH PULSATION ABSORBER FOR REDUCING CYLINDER NOZZLE RESONANT PULSATION

#128
20120045349
2012-02-23

Pressure pulsation dampener

#129
20120027633
2012-02-02

Piston refrigeration compressor

#130
20120024413
2012-02-02

THREE-WAY STRUCTURE

#131
20120003106
2012-01-05

TUNABLE CHOKE TUBE FOR PULSATION CONTROL DEVICE USED WITH GAS COMPRESSOR

#132
20110300014
2011-12-08

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

#133
20110290354
2011-12-01

Compressible Fluid Discharge Muffler

#134
20110277625
2011-11-17

Piston air compressor

#135
20110250083
2011-10-13

LINEAR COMPRESSOR

#136
20110243761
2011-10-06

Pulsation Dampener for Gas Compressors Having Selectable Size Choke Openings

#137
20110243760
2011-10-06

Pressure recovery insert for reciprocating gas compressor

#138
20110171046
2011-07-14

Noise muffler for compressor and compressor

#139
20110076171
2011-03-31

Suction valve of variable capacity compressor for vehicle

#140
20110014065
2011-01-20

Muffler for compressor

#141
20100310389
2010-12-09

SYSTEM FOR ATTENUATING PULSATION IN THE GAS DISCHARGE OF A REFRIGERATION COMPRESSOR

#142
20100290928
2010-11-18

Noise reducing device for hermetic type compressor

#143
20100275632
2010-11-04

REFRIGERATION SYSTEM

#144
20100260621
2010-10-14

Hermetic compressor

#145
20100239438
2010-09-23

Hermetic compressor

#146
20100202893
2010-08-12

Motor/pump assembly

#147
20100111713
2010-05-06

APPARATUSES, SYSTEMS, AND METHODS FOR IMPROVED PERFORMANCE OF A PRESSURIZED SYSTEM

#148
20100006371
2010-01-14

ACOUSTIC MUFFLER FOR A REFRIGERATION COMPRESSOR

#149
20090285701
2009-11-19

HERMETIC TYPE COMPRESSOR

#150
20090266643
2009-10-29

Silencer

#151
20090238698
2009-09-24

Reciprocal Compressor

#152
20090232671
2009-09-17

Discharging noise system of a hermetic compressor

#153
20090218164
2009-09-03

Double throat pulsation dampener for a compressor

#154
20090191076
2009-07-30

Tunable choke tube for pulsation control device used with gas compressor

#155
20090155108
2009-06-18

Hyperbolic horn for pulsation filter device used with gas compressor

#156
20090116974
2009-05-07

Compressor

#157
20090081054
2009-03-26

Structure of discharging refrigerant for linear compressor

#158
20090038684
2009-02-12

Pulsation attenuation

#159
20090028725
2009-01-29

Hermetic compressor having auxiliary communication tube

#160
20090025564
2009-01-29

Silencer and oxygen concentrator having silencer

#161
20090022605
2009-01-22

HERMETIC COMPRESSOR

#162
20080302596
2008-12-11

Diaphragm Muffler and Method of Use

#163
20080253900
2008-10-16

GAS COMPRESSOR WITH PULSATION ABSORBER FOR REDUCING CYLINDER NOZZLE RESONANT PULSATION

#164
20080131297
2008-06-05

Suction throttle valve of a compressor

#165
20080085196
2008-04-10

COMPRESSOR

#166
20080083582
2008-04-10

Exhaust system

#167
20080066482
2008-03-20

REFRIGERANT COMPRESSOR PROVIDED WITH A SOUND DAMPER FOR AN AIR CONDTIONING UNIT

#168
20080063512
2008-03-13

APPARATUS FOR SUPPLYING AIR TO FUEL CELL

#169
20080031747
2008-02-07

Reciprocating pump with reduced noise level

#170
20080014099
2008-01-17

PASSAGE STRUCTURE FOR AIR COMPRESSOR

#171
20080003115
2008-01-03

Hermetic type compressor

#172
20070237654
2007-10-11

Air supply system

#173
20070154331
2007-07-05

RECIPROCATING PISTON COMPRESSOR HAVING IMPROVED NOISE ATTENUATION

#174
20070065303
2007-03-22

RECIPROCATING PISTON COMPRESSOR HAVING IMPROVED NOISE ATTENUATION

#175
20070014678
2007-01-18

Hermetic compressor

#176
20060275150
2006-12-07

Refrigerant compressor

#177
20060251527
2006-11-09

Noise suppressor for air compressor

#178
20060237081
2006-10-26

Double throat pulsation dampener for a compressor

#179
20060140785
2006-06-29

Reciprocating compressor

#180
20060099091
2006-05-11

Discharge valve assembly of reciprocating compressor

#181
20060060197
2006-03-23

Linear compressor

#182
20060060196
2006-03-23

Muffler of linear compressor

#183
20060056990
2006-03-16

Compressor having discharge mufflers

#184
20060056988
2006-03-16

Multi-cylinder rotary type compressor

#185
20060056985
2006-03-16

Multi-cylinder reciprocating compressor

#186
20060039803
2006-02-23

Hermetic compressor

#187
20060034711
2006-02-16

Linear pump with sound attenuator

#188
20060002807
2006-01-05

Hermetic compressor

#189
20050254975
2005-11-17

Integrally molded sound housing for blower motor

#190
20050129534
2005-06-16

Hermetic compressor

#191
20050106037
2005-05-19

Hermetic compressor

#192
20050100456
2005-05-12

Hermetic compressor and freezing air-conditioning system

#193
20050058550
2005-03-17

Jet pump for boosting pressure at an inlet supplied from a sump and second fluid source

#194
20050053488
2005-03-10

Suction gas guiding system for reciprocating compressor

#195
20050053479
2005-03-10

Compressor

#196
20050042114
2005-02-24

Hermetic compressor

#197
20050031462
2005-02-10

Silent device for submerge pump of aquarium

#198
20050002800
2005-01-06

Device having a pulsation reducing structure, a passage forming body and compressor

#199
14100611
2016-03-22

Automated system for pressure pulsation dampening