Telephonic communications – With check operated control – Fraud or interference prevention
Patent
1994-04-22
1996-04-16
Chin, Stephen
Telephonic communications
With check operated control
Fraud or interference prevention
379143, 379150, 379155, 379368, 379369, 379428, 379437, 379451, H04M 1700, H04M 300, H04M 100, H04M 900
Patent
active
055090575
ABSTRACT:
A telephone is secured against vandalism by a double layer face plate or assemblage of tough materials. The assemblage consists of an outer plate covering most of the front of a telephone upper housing or casing, and a second layer covering the housing casing in areas not covered by the outer layer. Two such areas are those which involve openings in the outer or first layer for mounting the standard information pads above and below the dial push buttons. The second layer is open in the area of the push buttons, but the outer layer is provided with a grid thereat for preventing the housing or casing pushbutton grid from being pried out. The outer plate may be provided with wings to also secure the sides and top of the housing or casing against drilling and the insertion of a wire to pin the coin switch vane or to ground the coin switch relay to hold up deposited coins. The outer plate may also be provided with depending portions to cover the telephone coin box and coin return bucket. A horizontally extending plate at the bottom of the depending portions provides a stand for soft ground when the casing and its protection assemblage is unlocked and removed from the telephone.
REFERENCES:
patent: 4160136 (1979-07-01), McGough
patent: 4645876 (1987-02-01), Albertson
patent: 5054056 (1991-10-01), Blythe
patent: 5130629 (1992-07-01), Kuhfus
patent: 5133528 (1992-07-01), Vogl
patent: 5134654 (1992-07-01), McGough
patent: 5148476 (1992-09-01), Zausnes
patent: 5155765 (1992-10-01), McGough
Anello Salvatore
Diaz Albert F.
Turk Nathan M.
Chin Stephen
Sandt Technology, Ltd.
Shankar Vijay
Taphorn Joseph B.
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