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US 5,752,728 AGranted
Alarm-triggering locking device for the catch and/or hinge region of a door or window to be protected
OwnerErich Matouschekinventor
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OwnerErich Matouschekinventor
Estimating the term…
An alarm-triggering locking mechanism for the lock and/or hinge area of a door to be secured or a window to be secured is proposed, which is embodied as a locking plate (23) which can be attached to a door or window frame by means of holding screws (27) embodied as the first blocking device. A second blocking device, which is harder to overcome by the effect of force, is embodied as at least one striker element (25) rigidly connected with the locking plate (23) and which, following the limited movement of the locking plate (23) in the opening direction, comes to rest against a counter-striker element (26) anchored on the door or window frame. An alarm, in particular a silent alarm, is triggered via radio or the telephone net after the first blocking device has been overcome. The burglar is thereafter delayed by the second blocking device, which makes it possible for security forces to reach the location of the break-in and to arrest the burglar while the break-in is still in progress.
An alarm-triggering locking plate device for a lock area of a door to be secured or a window to be secured, having a locking plate and a first blocking device for the locking plate (28, 50, 67), which must be overcome by force, the locking plate being provided with at least one striker element (33, 54, 70), the locking plate device having a second blocking device for the locking plate (28, 50, 67), which is harder to overcome by said force, which is embodied as at least one counter-striker element (30, 51, 62) for being anchored in a door or window frame, and with means which trigger an alarm when the first blocking device is overcome, wherein, after the first blocking device has been overcome, the movement of the locking plate (28, 50, 67) in an opening direction (11) of the door or the window is limited by the second blocking device, the locking plate device further having securing screws or bolts whereby the locking plate (28, 50, 67) can be attached directly or indirectly to the door or window frame (42) by means of the securing screws (37, 61, 64) or securing bolts embodied as the first blocking device, the securing screws or bolts having predetermined breaking points, which permit them to be torn, broken or sheared off after a defined exertion of force.
Dependencies are inferred from the claim text.