Sound absorption method and apparatus

Details Sound absorption method and apparatus Sound absorption method and apparatus

Filed on

1983-05-19

Date issued

1985-11-19

Examiner

Fuller, Benjamin R.

Patent Class

Acoustics

SubClass

Sound-modifying means

SubSubClass

Sound absorbing panels

Other Related Categories

181286, 181296, E04B 182

Type

Patent

Status

active

Patent number

045536317

Description

ABSTRACT:
A method of absorbing sound generated within a clean-room environment and the sound-absorbing panel for carrying out that method, wherein said sound absorbing panel comprises a fibrous core material enclosed in a non-porous membrane, said membrane being attached to at least one of the extensive surfaces of said fiberglass core in a series of closed geometric figures. The membrane occupying the central portion of each of said geometric figures defines a diaphragm, the dimensions of the diaphragm being configured such that the lower order natural frequencies of vibration of each of the independent diaphragms correspond substantially to the frequency range of sound to be absorbed.

REFERENCES:
patent: 2413568 (1946-12-01), Hurley
patent: 3151700 (1964-10-01), Feid
patent: 3183996 (1965-05-01), Capaul
patent: 3948347 (1976-04-01), Rutledge
patent: 4111081 (1978-09-01), Hilliard et al.
patent: 4194329 (1980-03-01), Wendt
patent: 4253543 (1981-03-01), Johansson
patent: 4301890 (1981-11-01), Zalas
patent: 4347912 (1982-09-01), Flocke et al.

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