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Class Information
Number: 181/259
Name: Acoustics > Sound-modifying means > Muffler, fluid conducting type > With disparate fluid mingling
Description: Subject matter in which a fluid is introduced into and mingled with the moving fluids to assist in muffling, as by diluting and condensing the moving fluids.










Sub-classes under this class:

Class Number Class Name Patents
181/262 Induced by suction 60
181/260 Liquid 27


Patents under this class:

Patent Number Title Of Patent Date Issued
8356476 Diesel silencer capable of Tier 3 or Tier 4 operation Jan. 22, 2013
8056327 Micro-venturi exhaust cooling device Nov. 15, 2011
7942238 Marine muffler with angularly disposed internal baffle May. 17, 2011
7770691 Lightweight pelletized materials Aug. 10, 2010
7559406 Acoustic fluid machine Jul. 14, 2009
6845843 Suction muffler for a refrigerating machine Jan. 25, 2005
6749397 Fluidal machine Jun. 15, 2004
6430921 System moisture absorber Aug. 13, 2002
6385968 Exhaust discharge system with low IR signature May. 14, 2002
6220387 Exhaust muffler Apr. 24, 2001
5594217 Exhaust muffler for small marine craft Jan. 14, 1997
4580657 Integral fluted tube for sound suppression and exhaust ejection Apr. 8, 1986
4325460 Ejector muffler Apr. 20, 1982
4202426 Exhaust gas splitter construction May. 13, 1980
4196793 Method of and device for attenuating the noise radiated by gas jets Apr. 8, 1980
4184638 Low noise level, pressure fluid spouting device Jan. 22, 1980
4164989 Muffler, especially for portable internal combustion engine Aug. 21, 1979
4142607 Silencer, especially for portable motor chain saws Mar. 6, 1979
4113048 Method of and device for attenuating the noise radiated by gas jets Sep. 12, 1978
4060985 Exhaust system of an internal combustion engine Dec. 6, 1977
4050903 Combination muffler and catalytic converter Sep. 27, 1977
4019456 Marine wet exhaust system and improvements in powered marine vessel Apr. 26, 1977
3985302 Variable two stage air nozzle Oct. 12, 1976
3954224 Jet noise suppressor May. 4, 1976
3936017 Combined noise shield and thrust reverser Feb. 3, 1976











 
 
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