Timer for bank vaults

Details Timer for bank vaults Timer for bank vaults

1990-05-02

1991-01-08

Wolfe, Robert L.

Locks

Operating mechanism

Predetermined time interval controlled

70271, E05B 4300

Patent

active

049825852

ABSTRACT:
A low current drain timer for bank vaults is easily settable to limit opening of the vault to a predetermined time, irrespective of the time of closing the vault. Three thumb wheels having corresponding indicia are set to designate the elapsed time necessary for reopening. A timer is activated by a reset switch and the manual repositioning of a mechanical latch, which latch permits later closure of a vault door. Either of sequentially operating solenoids at the lapsed time permit opening of the vault door. A backup battery power source renders the timer unaffected by failure of a conventional electrical power source.

REFERENCES:
patent: 4062210 (1977-12-01), Uyeda
patent: 4137738 (1979-02-01), Marold
patent: 4359883 (1982-11-01), Bechtiger
patent: 4643010 (1987-02-01), Krivec
patent: 4649833 (1987-03-01), Cummins

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