Positive action lock for sliding windows

E - Fixed Constructions – 05 – C

Patent

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Details

E05C 3/22 (2006.01)

Patent

CA 2579980

A sliding window having a pair of sashes with a latch mechanism on the meeting rail of one of the sashes for latching the sashes together. To open the window, the latch mechanism is disengaged by grasping a finger grip on a latch handle to retract a latch bolt. As one or more of the sashes is slid to open the window and the latch mechanism clears the meeting rail of the other sash, a trigger cam rotates so that a portion extends outward from the latch mechanism and another portion releases a spring tab to engage and hold the latch bolt in the retracted position. When the window is closed, the outwardly extending portion of the trigger cam contacts the meeting rail of the other sash, causing the trigger cam to rotate in the opposite direction and releasing the latch bolt.

L'invention concerne une fenêtre coulissante à deux châssis munie d'un mécanisme de verrouillage fixé sur la traverse de rencontre de l'un des deux châssis. Pour ouvrir la fenêtre, tirer simplement sur la gâchette d'ouverture afin de libérer le verrou. Dès que l'un des deux châssis a coulissé suffisamment pour s'écarter de la traverse de rencontre et que le mécanisme de verrouillage est à l'écart de celle-ci, une came de déclenchement tourne et fait sortir une partie du mécanisme de verrouillage de son logement, alors qu'une autre partie dégage un onglet à ressort qui accroche et tient le verrou en retrait. Lorsqu'on ferme la fenêtre, la partie en saillie de la came de déclenchement entre en contact avec la traverse de l'autre châssis, ce qui fait tourner la came dans la direction opposée et remet le verrou en place.

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