Sound absorbing article and methods of constructing and utilizin

Details Sound absorbing article and methods of constructing and utilizin Sound absorbing article and methods of constructing and utilizin

1977-09-19

1979-11-13

Sacher, Paul A.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Combined

128152, 181 18, 181126, G02C 1100

Patent

active

041741552

ABSTRACT:
A sponge sound absorbing article for placement on the side frames of eyeglasses for workers employed in very noisy environments. The sound absorbing article eliminates any sound gap between the sides of the eyeglass frames and conventional earmuffs to protect the ears from sustained exposure to dangerous noise levels.

REFERENCES:
patent: 3856007 (1974-12-01), Leight

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