Accession Number:

AD0163594

Title:

Quiet Listen/Talk Adaptors for Handsets or Other Typical Phones.

Descriptive Note:

Patent,

Corporate Author:

OFFICE OF THE SECRETARY OF THE ARMY WASHINGTON D C

Personal Author(s):

Report Date:

1972-05-30

Pagination or Media Count:

4.0

Abstract:

The patent describes a sound attenuating adaptor for detachable connection to the receiver of a telephone handset consisting of a cap of resilent sound absorbing material which slips over the receiver of the handset. The cap is provided with a valve which, when the adaptor is pressed to a users ear, deforms, causing the valve to open and permit the user to hear sound emitted from the receiver. The valve per se may be a slit in the outer end of the cap or a disc embedded therein, which slides on a tube when the cap is deformed to expose holes and allow escape of sound.

Subject Categories:

  • Non-Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE