Movable or removable closures – Jail-type closure with remote control station – Additional key or combination control of individual closure
Patent
1978-05-05
1980-03-04
Downey, Kenneth
Movable or removable closures
Jail-type closure with remote control station
Additional key or combination control of individual closure
49 18, E05B 4700
Patent
active
041909852
ABSTRACT:
A locking assembly suitable for a plurality of sliding doors is disclosed. The assembly includes, at each door, a vertical drop bar in the door jamb with catches for engaging and locking the door at preferably two locations when the bar is lowered and the door is closed. The bar may be lifted by three different means: by a remotely operable motor which may be actuated to rotate a cam through one revolution, thereby lifting up on a rigid horizontal extension of the drop bar; by rotating a key in a key cylinder, which operates a similar rotatable cam to raise the bar; and by an emergency release mechanism including a manually slidable linkage member at the top of the frame, effective when its position is shifted to mechanically lift the drop bar. A deadlock is preferably provided to normally lock the bar in its lower, locking position, the deadlock being releasable upon actuation of any of the three drop bar lifting means. When the drop bar is lifted, mechanism is preferably provided to push the sliding door partially open and hold the bar in the raised position until the door is closed. Similar locking assemblies may be provided for a plurality of doors, with the motorized lock control effective for all doors from a single remote location, and with the emergency release mechanism effective to simultaneously unlock all of a row of doors.
REFERENCES:
patent: 2148521 (1939-02-01), Adam
patent: 2841252 (1958-07-01), Adam
patent: 3271901 (1966-09-01), Bednar
patent: 3837117 (1974-09-01), Butt
Richards Lewis B.
Romick Kenneth R.
Downey Kenneth
Washington Universal Security Products
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