Keyboard lock

Details Keyboard lock Keyboard lock

1982-01-12

1984-05-08

Wolfe, Robert L.

Locks

Special application

For closures

70 19, 70DIG72, E05B 7300, B65D 5514

Patent

active

044467087

ABSTRACT:
A locking assembly is provided that can be placed over a push-button keyboard to prevent unauthorized use. The entire keyboard is covered and a tumbler-activating key is inserted externally, rotated and withdrawn. When installed on a telephone, the device allow incoming calls to be received. If pried off of the keyboard to allow emergency use, no major damage would be inflicted to the keys, but the assembly could not be reinstalled without unlocking.

REFERENCES:
patent: 1447374 (1923-03-01), Bowzer
patent: 1819813 (1931-08-01), Ellenberger
patent: 1971797 (1934-08-01), Shinn
patent: 3495050 (1970-02-01), Bert
patent: 3953990 (1976-05-01), Nagel

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