Locks – Operating mechanism – Predetermined time interval controlled
Patent
1985-09-16
1987-02-03
Wolfe, Robert L.
Locks
Operating mechanism
Predetermined time interval controlled
70214, E05B 4300, E05B 1310
Patent
active
046401105
ABSTRACT:
A permutation lock having pushbutton code controls and automatic cancelling of the code when the latch is operated for opening the door. An adjustable time-delay device is provided for disabling the operation of the lock after a predetermined time from when the code is inserted in the lock chamber. The time delay device disables the lock after the duration of a predetermined time.
REFERENCES:
patent: 2079702 (1937-05-01), Diesel
patent: 3702551 (1972-11-01), Blizard
patent: 3747377 (1973-07-01), Van Deudekom
patent: 3800572 (1974-04-01), Beharelle
D'Intino Adamo M.
Fish Aaron M.
Mazoff Stanley S.
Somasundaram Hariharan
Ilco Unican Corp.
Illich Russell W.
Jones Ira M.
Wolfe Robert L.
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