F01N1/087 - CPC Classification Index

ClassID:

137757 ⎘

F01N1/087 - CPC Classification

Classification description:

Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling having means to impart whirling motion to the gases using tangential inlets into a circular chamber

Recent Application in this class:

20240077008

2024-03-07

AIR-TRANSPARENT SELECTIVE SOUND SILENCER USING ULTRA-OPEN METAMATERIAL

20210087957

2021-03-25

Air-transparent selective sound silencer using ultra-open metamaterial

20200043456

2020-02-06

Air-transparent selective sound silencer using ultra-open metamaterial

20190257330

2019-08-22

VORTEX FLOW CATALYTIC CONVERSION APPARATUS AND METHOD OF VORTEX FLOW CATALYTIC CONVERSION

20170268403

2017-09-21

Cyclonic thermal diffuser and method

20150330422

2015-11-19

Vortex flow apparatus

20150273411

2015-10-01

Doser and mixer for a vehicle exhaust system

20110180347

2011-07-28

Spin muffler

20070284178

2007-12-13

Muffler and related systems

#10

20050279572

2005-12-22

Arrangement for internal combustion engine

#11

20050023078

2005-02-03

Tuned exhaust system for small engines

#12

20050023075

2005-02-03

Reduced noise valve stack connection