Sound absorbing device

Details Sound absorbing device Sound absorbing device

1978-03-22

1980-07-08

Hix, L. T.

Acoustics

Sound-modifying means

Muffler, fluid conducting type

181252, 181258, 181296, F01N 124

Patent

active

042113024

ABSTRACT:
Acoustic energy is absorbed from a moving fluid by passing the fluid, which is typically a gas, through a tube of closely-woven material defining a gas passage, the tube of material being in contact with a surface covered with a multiplicity of fibers or filaments, each filament having one end attached directly or indirectly to the surface. Automobile or marine mufflers or silencers effective in reducing or eliminating objectionable noise, but with only nominal back pressure, are disclosed.

REFERENCES:
patent: 1968456 (1934-07-01), Kliejoth
patent: 3243010 (1966-03-01), Flynn
patent: 3920872 (1975-11-01), Ollinger
patent: 3954031 (1976-05-01), Tull et al.
patent: 3955643 (1976-05-01), Clark

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