Apparatus for and method of attenuating acoustic energy

Details Apparatus for and method of attenuating acoustic energy Apparatus for and method of attenuating acoustic energy

1997-12-03

2000-03-07

Copenheaver, Blaine

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181286, 181288, 181293, 181295, 4283148, 4283166, B32B 524, B32B 532, E04B 182

Patent

active

060337567

ABSTRACT:
A sound attenuating element is provided which comprises a closed cell foam layer (2) having a plurality of channels (4) formed therein. The element is, in use, placed adjacent a surface such that an air gap is formed between the foam layer and the surface. The channels couple to the air gap to form a plurality of Helmholtz resonators.

REFERENCES:
patent: 4121960 (1978-10-01), Focht
patent: 4128682 (1978-12-01), Nomura et al.
patent: 4172168 (1979-10-01), Klaffke et al.
patent: 4256797 (1981-03-01), Stamper et al.
patent: 4263356 (1981-04-01), Nomura et al.
patent: 4559255 (1985-12-01), Shimode et al.
patent: 5460870 (1995-10-01), Arthurs

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