Accession Number:

ADD002000

Title:

Adjustable Earmuffs.

Descriptive Note:

Patent,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s):

Report Date:

1975-02-11

Pagination or Media Count:

5.0

Abstract:

The patent concerns an ear protecting headgear having means for adjusting the pressure of an earmuff seal against the head of a wearer useful in high noise environments. In a headgear such as a helmet the apparatus includes a pair of cords connected at their respective one ends to a pair or resilient supports containing earmuffs, and at their other ends to a single take-up device mounted on the helmet. Manual manipulation of the take-up device selectively and simultaneously shortens the extensible length of both cords moving both earmuffs inwardly toward a wearers ears, adjusting the earmuff seal pressure against the wearers head and effectuating varying degrees of ambient sound attenuation.

Subject Categories:

  • Protective Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE