Assembly of a door latch and anti-theft and anti-attack...

Details Assembly of a door latch and anti-theft and anti-attack... Assembly of a door latch and anti-theft and anti-attack...

E - Fixed Constructions

05

B

292/4

E05B 47/06 (2006.01) E05B 65/20 (2006.01) E05B 65/12 (2006.01) E05B 65/32 (2006.01)

Patent

CA 1316562

ASSEMBLY OF A DOOR LATCH AND ANTI-THEFT AND ANTI-ATTACK DEACTIVATING DEVICE FOR SAID LATCH, AND LATCH WHICH IS PART OF SAID ASSEMBLY A B S T R A C T The latch comprises a keeper (2), a fork member (3) provided with two branches (7, 8) for retaining the keeper (2), a catch (9) movable to a position for locking the fork member (3) on the keeper (2), and a control lever (12) for the catch (9) for unlocking the fork member (3). The lever (12) is connected to an outer or inner opening con- trol (13, 14) and is associated with an electric deactivat- ing circuit comprising switches (25, 26) and an electro- mechanism so arranged that an attempt to open in an unautho- rized manner after the deactivation of the door causes the closure of one of the switches (25, 26) and the supply of current to the electromechanism which automatically releases the lever (12) from the catch (9) and prevents the unlock- ing of the latch by the catch. In the event of a breakdown of the supply battery, the lever (12) remains coupled to the catch (9) and permits the opening of the door. Fig. 1.

565136

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