Telephone jack security device

Details Telephone jack security device Telephone jack security device

1995-11-13

1998-06-30

Bost, Dwayne

Telephonic communications

Terminal accessory or auxiliary equipment

379445, 379451, 379198, 200 4302, H04M 100

Patent

active

057745439

ABSTRACT:
A standard phone jack is provided with a lock cylinder having a rotatable contact arm which is capable of rotating between a first open circuit position when in its locked position and a second closed circuit position where it engages a wire contact to provide access to a dial tone. In such a manner, it completely cuts off all access to the outgoing phone line when locked so that no calls may be made or received by unauthorized users, nor can charge calls or collect calls be accepted by unauthorized users.

REFERENCES:
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patent: 4311883 (1982-01-01), Kidney
patent: 4584856 (1986-04-01), Petersdorff et al.
patent: 4683583 (1987-07-01), Kosser
patent: 4853960 (1989-08-01), Smith
patent: 4924512 (1990-05-01), Sizemore et al.
patent: 4965459 (1990-10-01), Murray
patent: 5119419 (1992-06-01), McDaid
patent: 5297199 (1994-03-01), Graham et al.
patent: 5305380 (1994-04-01), Hileman et al.

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