Timed door locking device

Details Timed door locking device Timed door locking device

1990-12-27

1992-12-22

Luebke, Renee S.

Locks

Operating mechanism

Predetermined time interval controlled

70DIG41, 292DIG69, 292269, 194241, E05B 4300

Patent

active

051725770

ABSTRACT:
A door lock having a first member rigidly affixed adjacent a door and having a second member slidably coupled to the first member for slidably advancing the second member in a first direction into a locked position overlying the door. A latch member is carried by the second member for slidable advance of the latch member in a second direction so as to releasably mate the latch member within a latch aperture on the first member, thereby locking the second member in the locked position. A timer is carried by the seond member for withdrawing the latch member from the latch aperature upon expiry of a pre-determined time interval thereby allowing the slidable withdrawal of the second member from the locked position into an open position away from the door.

REFERENCES:
patent: 1510562 (1924-10-01), Segal
patent: 1541093 (1925-06-01), Amico
patent: 2551730 (1951-05-01), Del Sol
patent: 2960046 (1960-11-01), Clark
patent: 2991866 (1961-07-01), James et al.
patent: 3065619 (1962-11-01), Coss
patent: 3185278 (1965-05-01), Miller et al.
patent: 3197984 (1965-08-01), Cohen
patent: 3985023 (1976-10-01), Guth
patent: 4401346 (1983-08-01), Jones et al.
patent: 4880406 (1989-11-01), Van Horn et al.
patent: 4958867 (1990-09-01), Champagne

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