Noise attenuation apparatus

Details Noise attenuation apparatus Noise attenuation apparatus

1989-04-07

1990-06-05

Fuller, Benjamin R.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181265, 181272, F01N 110

Patent

active

049305972

ABSTRACT:
A tubular sock made of fibrous material is placed over a louver patch formed in an exhaust flow tube mounted in a muffler to attenuate engine exhaust noise. A slip tube is provided for preventing the tubular sock from becoming entangled on the louver patch as it is being placed on the exhaust flow tube.

REFERENCES:
patent: 2115113 (1938-04-01), Mackenzie et al.
patent: 2934161 (1960-04-01), Powers
patent: 3388768 (1968-06-01), Heath et al.
patent: 3981378 (1976-09-01), Potter
patent: 4278147 (1981-07-01), Watanabe et al.
patent: 4396090 (1983-08-01), Wolfhugel
patent: 4577724 (1986-03-01), Vizard
patent: 4589517 (1986-05-01), Fukuda

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