Back to results
US 3,944,018 AGranted
Acoustical seal
OwnerRodney Jene Satoryinventor
Life of this patent
Estimating the term…
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.
Claims14
An acoustical seal comprising:
- an annular base lying generally in a first plane and having an inner and an outer periphery thereon;
- a first annular elastomeric lip connected to said inner periphery and extending inwardly and to one side of said plane at a first acute angle of between 45.degree. and 65.degree. with respect to said plane;
- a second annular elastomeric lip connected to said outer periphery and extending outwardly and to said one side of said plane at a second acute angle of between 45.degree. and 65.degree. with respect to said plane;
- a third annular elastomeric lip connected to said base between said first and second lips and extending outwardly and to one side of said plane at a third acute angle of between 45.degree. and 65.degree. with respect to said plane;
- and
- annular means attached to said base on the other side of said plane for acoustically sealing said base to a closure member.
3 more elements
Dependencies are inferred from the claim text.