Dial assembly terminalgard

Details Dial assembly terminalgard Dial assembly terminalgard

1994-04-22

1996-06-11

Chin, Stephen

Telephonic communications

With check operated control

Fraud or interference prevention

379143, 379150, 379437, 379451, H04M 1700, H04M 900, H04M 100

Patent

active

055264123

ABSTRACT:
A telephone is secured against vandalism involving inserting a bare electrically conductive wire through the slot in the MEDECO lock securing the upper housing to the main housing. The free end of the inserted wire is made to contact either the "12" or the "1" terminal on the key pad on the back of the dial housing, to place system ground on the relay controlling the coin switch at the bottom of the chute for inserted coins and neutralize it so that coins can not be released to the coin box if a call is completed nor to the coin return bucket if a call is not completed. An advantageously shaped and located and mounted wire guard prevents the vandalism. The thin guard includes a wire blocking portion, a flange mounting portion, and intermediate portion connecting the blocking and mounting portions, and an inturned portion on its free end for overlying the terminals.

REFERENCES:
patent: 4700384 (1987-10-01), Meyer
patent: 5007079 (1991-04-01), Vogl
patent: 5018193 (1991-05-01), DeArkland
patent: 5054056 (1991-10-01), Blythe
patent: 5128993 (1992-07-01), Skowronski
patent: 5131035 (1992-07-01), Ohayon
patent: 5146492 (1992-09-01), Stone
patent: 5291981 (1994-03-01), Anello
patent: 5315654 (1994-05-01), Kraft

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