Patents-Review.com
ClassID:

137766 ⎘

F01N1/163 - CPC Classification

Classification description:

Silencing apparatus characterised by method of silencing by using movable parts for adjusting resonance or dead chambers or passages to resonance or dead chambers by means of valves

Recent Application in this class:
#1
20250360999
2025-11-27

EXHAUST HANDLING SYSTEMS FOR MARINE VESSELS AND RELATED METHODS

 #2
20250067201
2025-02-27

Dual Mode Muffler

 #3
20240376991
2024-11-14

COUPLING DEVICE, VALVE SYSTEM AND METHOD FOR ASSEMBLING A COUPLING DEVICE

 #4
20240286726
2024-08-29

EXHAUST HANDLING SYSTEMS FOR MARINE VESSELS AND RELATED METHODS

 #5
20230304425
2023-09-28

DRONE ELIMINATION MUFFLER

 #6
20230235690
2023-07-27

Exhaust restriction device for improved sensor signal

 #7
20230193796
2023-06-22

MUFFLER VALVE AND MUFFLER

 #8
20230147854
2023-05-11

Methods and system for de-icing a valve of an exhaust system

 #9
20230107715
2023-04-06

Valve mounting structure

 #10
20220316371
2022-10-06

Dual function exhaust system attachment

 #11
20220298941
2022-09-22

Exhaust sound tuning system and method

 #12
20220049635
2022-02-17

Gas flow and sound control valve for exhaust gas system

 #13
20210199033
2021-07-01

Exhaust-gas aftertreatment arrangement

 #14
20210131324
2021-05-06

Adaptive exhaust valve with purpose-designed spring

 #15
20210115824
2021-04-22

Methods and systems for an exhaust muffler system

 #16
20210108544
2021-04-15

EXHAUST SYSTEM FOR INTERNAL COMBUSTION ENGINE

 #17
20210025302
2021-01-28

Externally mounted in-line exhaust gas valve

 #18
20210025301
2021-01-28

Externally mounted in-line exhaust gas valve

 #19
20200378285
2020-12-03

Exhaust heat recovery system

 #20
20200332687
2020-10-22

Device for controlling exhaust sound of vehicle

 #21
20200123948
2020-04-23

Variable valve for muffler and dual muffler having the same

 #22
20200123946
2020-04-23

Drone elimination muffler

 #23
20200056519
2020-02-20

Muffler for motor vehicles

 #24
20200011219
2020-01-09

Valve assembly for vehicle exhaust system

 #25
20190390581
2019-12-26

Valve with a ball bearing and exhaust line comprising said valve

 #26
20190360374
2019-11-28

Exhaust valve damper

 #27
20190360373
2019-11-28

Passive flap valve for vehicle exhaust system

 #28
20190323396
2019-10-24

Muffler comprising a Helmholtz resonator and a vehicle comprising such a muffler

 #29
20190234264
2019-08-01

Exhaust unit

 #30
20190226371
2019-07-25

Muffler

 #31
20190120102
2019-04-25

Muffler valve device for vehicle

 #32
20190120101
2019-04-25

Method for variable position exhaust tuning valve diagnostics

 #33
20190085744
2019-03-21

Exhaust device for internal combustion engine

 #34
20190078476
2019-03-14

Exhaust device for internal combustion engine

 #35
20190055866
2019-02-21

Exhaust device for internal combustion engine

 #36
20180252131
2018-09-06

Exhaust system for an internal combustion automotive engine

 #37
20180245501
2018-08-30

Changeover valve

 #38
20180238208
2018-08-23

Vehicle including cabin disturbance mitigation system

 #39
20180045195
2018-02-15

Suction acoustic filter for compressor

 #40
20180016954
2018-01-18

Exhaust-gas system

 #41
20170362976
2017-12-21

Exhaust system for an engine

 #42
20170335741
2017-11-23

Muffler for an exhaust system of an internal combustion engine, especially for motor vehicles with hybrid drive

 #43
20170298793
2017-10-19

Selectively tunable exhaust noise attenuation device

 #44
20170276041
2017-09-28

Muffler device including central common active control valve

 #45
20170234265
2017-08-17

Heat exchanger for a rankine cycle in a vehicle muffler

 #46
20170191390
2017-07-06

Silencer

 #47
20170183994
2017-06-29

Exhaust device structure for rocking vehicle

 #48
20170145882
2017-05-25

Drone elimination muffler

 #49
20170074407
2017-03-16

Valve unit including a mechanical coupler

 #50
20160376953
2016-12-29

Exhaust muffler

 #51
20160333756
2016-11-17

Muffler

 #52
20160326924
2016-11-10

Variable valve

 #53
20160298510
2016-10-13

Drone elimination muffler

 #54
20150354421
2015-12-10

Muffler

 #55
20150136520
2015-05-21

Structure of dual exhaust system for CDA engine

 #56
20150053500
2015-02-26

System of controlling exhaust sound of vehicle automatically and method of the same

 #57
20130247865
2013-09-26

Silencer for exhaust systems

 #58
20130233269
2013-09-12

Exhaust valve assembly

 #59
20130111901
2013-05-09

PULSATION ABSORPTION SYSTEM FOR AN ENGINE

 #60
20120228053
2012-09-13

Silencer for a two-stroke motor of a power tool

 #61
20120210701
2012-08-23

Exhaust-gas muffler

 #62
20120168245
2012-07-05

Exhaust pipe part and exhaust apparatus for internal combustion engine

 #63
20120073277
2012-03-29

Valve for motor vehicle exhaust muffler

 #64
20120055734
2012-03-08

Exhaust flow control device for exhaust muffler

 #65
20110278090
2011-11-17

Exhaust system and corresponding support structure

 #66
20110126531
2011-06-02

VARIABLE MUFFLER

 #67
20110079463
2011-04-07

Variable resonation chamber valve

 #68
20100276226
2010-11-04

Muffler

 #69
20100146957
2010-06-17

Exhaust system of an internal combustion engine

 #70
20100126799
2010-05-27

Muffler and engine exhaust apparatus

 #71
20100126159
2010-05-27

Valve for a motor vehicle exhaust silencer, and silencer comprising a valve of this type

 #72
20090229911
2009-09-17

VARIABLE GEOMETRY MUFFLER FOR AN EXHAUST SYSTEM OF AN INTERNAL COMBUSTION ENGINE

 #73
20080236941
2008-10-02

Exhaust system for saddle-ride type vehicle

 #74
20080156578
2008-07-03

VARIABLE GEOMETRY MUFFLER FOR AN EXHAUST SYSTEM OF AN INTERNAL COMBUSTION ENGINE

 #75
20080035420
2008-02-14

Muffler of internal combustion engine

 #76
20070045044
2007-03-01

Flow-through mufflers with optional thermo-electric, sound cancellation, and tuning capabilities

 #77
20070045043
2007-03-01

Muffler for an exhaust gas system

 #78
20060213719
2006-09-28

Compressor muffler with check valve

 #79
20060065477
2006-03-30

Muffler

 #80
20050178612
2005-08-18

Electrically controlled in-muffler exhaust valve for use during cylinder deactivation

 #81
20050155816
2005-07-21

Dynamic exhaust system for advanced internal combustion engines

 #82
18369485
2024-07-23

Exhaust handling systems for marine vessels and related methods

 #83
15238138
2017-04-11

Muffler for an exhaust system