Single cylinder deadbolt lock mechanism

Details Single cylinder deadbolt lock mechanism Single cylinder deadbolt lock mechanism

1986-11-06

1987-12-01

Wolfe, Robert L.

Locks

Special application

For closures

70133, 70DIG42, E05B 656

Patent

active

047095660

ABSTRACT:
A lock mechanism is shown having a latch bolt movable between retracted and extended positions, which latch bolt is operated by rotation of a lock cylinder at one side and a turn piece at the opposite side. A manually movable latching member operable from said opposite side of the lock mechanism is movable between a first position where operation of the latch bolt by the turn piece is prevented, and a second position where operation of the latch bolt by the turn piece is permitted. A combination lock operable from said opposite side of the lock mechanism may be used to lock the latching member in the first position thereof wherein operation of the latch bolt by the turn piece is prevented. With the combination lock set to the lock-open combination, movement of the latching member between said first and second position is permitted.

REFERENCES:
patent: 527560 (1894-10-01), Rumsey
patent: 584697 (1897-06-01), Morris
patent: 1000527 (1911-08-01), Lee
patent: 1148526 (1915-08-01), Muscarella
patent: 1377737 (1921-05-01), Stosech
patent: 1956388 (1934-04-01), Kalina
patent: 2463195 (1949-03-01), Morgan
patent: 2978267 (1961-04-01), North et al.
patent: 3593548 (1971-07-01), Kendrick
patent: 3685036 (1972-08-01), Torok
patent: 3950970 (1976-04-01), Fortin
patent: 4047408 (1977-09-01), Johns et al.
patent: 4064721 (1977-12-01), Morgan
patent: 4290282 (1981-09-01), Wildenradt

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