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Class Information
Number: 181/234
Name: Acoustics > Sound-modifying means > Muffler, fluid conducting type > Liquid motion silencer > Water-closet type
Description: Subject matter in which the fluid conductor is part of a fluid supply leading to or part of a water closet.

Patents under this class:

Patent Number Title Of Patent Date Issued
8162102 Vacuum waste-water system sound-absorber Apr. 24, 2012
7942238 Marine muffler with angularly disposed internal baffle May. 17, 2011
7111831 Sound attenuation apparatus and method Sep. 26, 2006
6868938 Noise-reducing engine enclosure Mar. 22, 2005
6848668 Silent-operating device for feeding water into a tank, in particular for filling a lavatory flush tank Feb. 1, 2005
6810904 Lavatory flush tank silent-operating fill device Nov. 2, 2004
6152258 Exhaust system with silencing and water separation capability Nov. 28, 2000
5171944 Pressure pulsation absorbing device Dec. 15, 1992
4938245 Low noise toilet tank valve Jul. 3, 1990
4890339 Splash suppressor Jan. 2, 1990
4742889 Phonic deadening device for conduit of sanitary installation May. 10, 1988
4635751 Silencer Jan. 13, 1987
4448284 People rescue device May. 15, 1984
4345341 Vacuum suction type urinating aid Aug. 24, 1982
4221335 Flow controller and support therefor, and flow controller-noise reducer combinations Sep. 9, 1980

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