Locks – Special application – For closures
Patent
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 The entire keyboard is covered and a tumbler-activating key is inserted externally, rotated and withdrawn.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
Lucas James W.
Wolfe Robert L.
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