Telephone lock

Details Telephone lock Telephone lock

1981-12-07

1983-09-13

Rubinson, G. Z.

179189D, 179159, H01M 166

Patent

active

044044356

ABSTRACT:
A lock for securing a telephone instrument against unauthorized use includes a key-operated cylinder extending through a wall of the housing of the telephone instrument and including a cam movable between locked and unlocked positions for engaging the line switch of the telephone instrument in the locked position and maintaining the line switch in a disconnect position so long as the lock remains in the locked position.

REFERENCES:
patent: 3358087 (1967-12-01), Von Stein
patent: 3480720 (1969-11-01), Aiba
patent: 4022992 (1977-05-01), Kennedy

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