Title: Telephone lock

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.

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Inventors: Davis, Sylvia (New York, NY, US)

Application Number: 829629
Filing Date: 1977-09-01
Publication_date: 1978-12-26
Assignee:
Primary Class(es): 379/445 70/163, 292/38, 379/368
Other Classes:
US Patent Ref:

2118606	May, 1938	Jandus et al.	70/259.
2154118	Apr, 1939	Ames	70/163.
2885931	May, 1959	McDonald et al.	70/163.
3372246	Mar, 1968	Kuepfer	179/179.
3899647	Aug, 1975	Nachsi et al.	179/189.
4028508	Jun, 1977	Hall	179/189.

Other Refs:
Primary Examiner: Brown, Thomas W.
Assistant Examiner:
Attorney: Miskin; Howard C.