US 4,563,886 AGranted

Locking arrangement for securing doors

AssigneeELEKTRONIKBAU Krippner & Kletzmaier Gesellschaft m.b.H. & Co.

InventorsKarl Kletzmaier, Gunther Krippner

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Abstract

A locking arrangement for securing doors (2) or the like with two bolts (5, ) displaceable relative to the door (2) to be closed and two locking devices (7, 8) associated therewith are described. One of the two locking devices (7, 8) has a locking mechanism (9) lockable with a key (10) and the other one is associated with a remote-controllable unlocking drive (14). A positioning device (16) is furthermore associated with lock bolt (5) lockable by the locking mechanism (9), which is actuated when lock bolt (5) is open. The actuation of the remote-controllable unlocking drive (14) is released when lock bolt (5) is open. Safety bolt (6) is associated with the unlocking drive (14). A drive device (17) is associated with the safety bolt (6) and is effective in the opening direction. It cooperates with the lock bolt (5) and is movable with the same in a starting position provided for the displacement of the safety bolt (6 ).

Claims11

Dependent claims

A locking arrangement for securing a door having a door frame, which comprises

(a) a lock bolt and a safety bolt mounted for displacement relative to the door,
(b) a first locking device associated with the lock bolt and having
(1) a key-operated locking mechanism for locking the lock bolt,
(c) a second locking device associated with the safety bolt and having
(1) a latch element for engaging the safety bolt,
(2) a remote-controllable unlocking drive for the latch element and
(3) a drive device effective in an opening direction and cooperating with the safety bolt for adjustment therewith into a locking position and into a starting position allowing for the displacement of the safety bolt, respectively,
(d) a positioning means associated with the lock bolt, and
(e) a circuit control arrangement for the remote-controllable unlocking drive,
(1) the lock bolt positioning means assuming a circuit switching position when the lock bolt is open, wherein the remote-controllable unlocking drive for the latch element is actuated by the control arrangement to release the latch element.

7 more elements

Dependencies are inferred from the claim text.