Movable or removable closures – Operator interrelated with closure latch release – Motor driven
Patent
1987-12-28
1989-02-21
Kannan, Philip C.
Movable or removable closures
Operator interrelated with closure latch release
Motor driven
49199, 160188, E05F 1500
Patent
active
048053449
ABSTRACT:
A deadbolt assembly adapted for use with automatic door openers having a movable carriage power driven on a track mounted above the door. A lift arm connects the carriage to the door which swings the door up and down about a horizontal axis in response to movement of the carriage. A deadbolt shaft reciprocates within a sleeve which is secured to the lower inside portion of the door. The shaft locks the door when closed by engagement with a lock opening. A cable connects the shaft to the carriage so that the shaft is lifted out of the opening as the carriage moves to lift the door. A slotted bracket connection between the door and lift arm provides a lost motion action to delay door movement until the shaft is out of the opening. In an alternative embodiment, the lift arm includes a free end at the bracket connection. The door connection includes slots which allow the free end to extend beyond the bracket and engage a door header opening after the door is closed. This locks the door in a closed position without the necessity of the deadbolt shaft and cable.
REFERENCES:
patent: 2589479 (1952-03-01), Curtis
patent: 2822166 (1958-02-01), Herbert
patent: 3435558 (1969-04-01), Kruse
patent: 3526994 (1970-09-01), Delaney
patent: 3704548 (1972-12-01), Wiegleb
patent: 3708917 (1973-01-01), Streeter
patent: 4330958 (1982-05-01), Richmond
patent: 4442631 (1984-04-01), Weber
patent: 4513593 (1985-04-01), Wilson
patent: 4597224 (1986-07-01), Tucker
Hovet Kenneth J.
Kannan Philip C.
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