Acoustical seal

Details Acoustical seal Acoustical seal

1974-08-01

1976-03-16

Tomsky, Stephen J.

Acoustics

Auditorium

2209, 128151, 179182R, 181129, A42B 106

Patent

active

039440184

ABSTRACT:
An acoustical ear muff arrangement having an identical acoustical sealing muff for each ear, the muffs being connected together by an adjustable spring wire structure for holding a muff over each ear. Each muff has a dish-shaped portion with elastomeric foamed material therein, and with a novel non-foamed elastomeric seal around the periphery of the dish-shaped portion. The non-foamed elastomeric seal has three lips extending from a base section. The lips have a tapering configuration and extend at angles within a critical range from the base section.

REFERENCES:
patent: 1365425 (1921-01-01), Shewhart
patent: 3506980 (1970-04-01), Aileo
patent: 3506981 (1970-04-01), Stewart et al.
patent: 3593341 (1971-07-01), Aileo

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