Sound attenuation apparatus

Details Sound attenuation apparatus Sound attenuation apparatus

1986-10-20

1988-06-21

Fuller, Benjamin R.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181224, 181257, 181258, 181264, 181267, 181272, 181276, 181280, 181282, F01N 104, F01N 108

Patent

active

047519800

ABSTRACT:
A sound attenuation apparatus which is to be connected to an airflow duct and is to receive the air from the duct. The sound attenuation apparatus includes a mass of plates located in a stacked arrangement with peripheral gaps being formed between the plates. The airstream is to be conducted through an opening formed between the plates. The airstream is to be conducted into an opening formed within the center of the plates and then discharged into the ambient through the peripheral gap area. Each of the plates include a mass of holes.

REFERENCES:
patent: 2954839 (1960-10-01), Gibel
patent: 4093110 (1978-06-01), Johnson
patent: 4319660 (1982-03-01), Bishop
patent: 4331213 (1982-05-01), Taniguchi

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