Burglarproof lock
AssigneeSchulte-Schlagbaum Aktiengesellschaft
InventorArmin Eisermann
Life of this patent
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Abstract
The present invention relates to a lock (3) on the inside of a door, wherein the lock can be actuated from outside the door. The lock is connected to a locking device (14) on the outer side of the door by a coupling rod (12). In order to increase protection against burglaries, the coupling rod (12) is to pass through a channel (22) with which a channel closure jaw (28) is associated. The jaw is supported on the coupling rod (12) and is under spring-load in the direction of closure. Removal of the coupling rod during a burglary attempt results in a closure of the channel with protection of the lock from tampering by the jaw.
Claims6
A lock assembly for a door or similar type of panel, wherein the lock assembly comprises
- a lock disposed on the inner side of the door to be actuated from the outer side of the door;
- a closing means on the outer side of the door;
- a coupling rod extending through the door for connecting the lock to the closing means;
- a bushing having a channel, the bushing being located between said closing means and said lock, the coupling rod passing through the channel;
- a channel closure jaw positioned at a side of said channel;
- and
- wherein said closure jaw is spring loaded against said coupling rod to close said channel in the absence of said coupling rod;
- and
- said bushing includes a slot which is transverse to and opening into said channel, the channel closure jaw being formed as a wall segment within the transverse slot of said bushing.
Dependencies are inferred from the claim text.