Telephone lock

Details Telephone lock Telephone lock

1977-09-01

1978-12-26

Brown, Thomas W.

Closure fasteners

Clamps

Portable

70163, 292 38, H04M 166

Patent

active

041317696

ABSTRACT:
A telephone lock for use in conjunction with Trimline or similar telephones to preclude access to the dialing mechanism thereof thereby preventing unauthorized calls. The lock includes a housing adapted to cover the dialing mechanism of the phone, a plurality of spring urged engaging elements which are selectively extensive through spots located in the housing, and lock means disposed within the housing for extending and retracting the plurality of spring urged engaging elements.

REFERENCES:
patent: 2118606 (1938-05-01), Jandus et al.
patent: 2154118 (1939-04-01), Ames
patent: 2885931 (1959-05-01), McDonald et al.
patent: 3372246 (1968-03-01), Kuepfer
patent: 3899647 (1975-08-01), Nachsi et al.
patent: 4028508 (1977-06-01), Hall

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