Pushbutton telephone dial locks

Details Pushbutton telephone dial locks Pushbutton telephone dial locks

1981-06-15

1983-08-02

Stellar, George G.

70DIG72, H04M 166

Patent

active

043968104

ABSTRACT:
A keyboard lock mechanism is disclosed herein for preventing all or some of the keys or pushbuttons on a telephone from being depressed which includes a mounting plate attached detachably or permanently to the body or case of the telephone and having a central opening therein exposing the full keyboard of keys normally carried on the telephone body. A movable cover is pivotally or slidably carried on the mounting plate for selective positioning over the keys of the keyboard so that the keys are inaccessible. A lock having a movable latch releasably secures the cover over the keys or pushbuttons. Attachments are provided on the mounting plate for securing the mechanism onto the telephone body.

REFERENCES:
patent: 2194521 (1940-03-01), Engelson
patent: 3866000 (1975-02-01), Gillis
patent: 3899647 (1975-08-01), Nachsi et al.
patent: 3965310 (1976-06-01), Willy
patent: 4005279 (1977-01-01), Richter
patent: 4204097 (1980-05-01), Schmit

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