Bolt closure maintenance for fire-degraded latching assembly

Details Bolt closure maintenance for fire-degraded latching assembly Bolt closure maintenance for fire-degraded latching assembly

E - Fixed Constructions

05

C

E05C 19/00 (2006.01) E05B 15/00 (2006.01) E05B 65/10 (2006.01)

Patent

CA 2228194

In a door closure assembly, the combination comprising a latch bolt element; carrier structure to carry the bolt element to pivot between door unlatched and latched position; and means carried by a fire resistant portion of the assembly to be responsive to an increase in temperature to a level T to move into position to block door unlatching movement of the bolt element from door latching position.

Verrou de porte comprenant : un pêne; un dispositif de déplacement permettant de faire pivoter le pêne d'une position déverrouillée à une positIon verrouillée; et un dispositif, logé dans une partie du verrou résistante au feu, qui réagit à une augmentation de température, lorsque celle-ci atteint une valeur T, en se déplaçant de manière à bloquer le pêne pour l'empêcher de passer à la position déverrouillée.

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