Key-in-lever type door lock used for handicapped people

E - Fixed Constructions – 05 – B

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E05B 65/00 (2006.01) E05B 55/00 (2006.01) E05B 61/00 (2006.01)

Patent

CA 2075239

A key-in-lever type door lock which can be installed on either a left hand or right hand door by a left-right reverse operation of a reverse plate. The lock comprises a lock assembly which regulates a uni-directional, 45-degree rotation of a handle thereof and a latch assembly which converts the 45-degree rotational movement to a retraction of a latch bolt. The lock is jimmy-proof, i.e., secure against improper manipulation, by the provision of a latch stop pivoted to the latch bolt and being movable together therewith. The latch stop, which has a catch end normally blocked by a retaining plate, is operationally pivotable about the latch bolt to release the blockage, thereby permitting a relative sliding movement between the latch stop and the retaining plate.

Serrure de porte actionnée par clé pouvant être installée à droite ou à gauche de la porte par un mouvement réversible gauche-droite sur une plaque d'inversion. La serrure comprend une pièce qui régule la rotation unidirectionnelle à 45 degrés d'une poignée et un dispositif qui transforme le mouvement rotationnel de 45 degrés en un retrait du pêne demi-tour. La serrure est à goupilles dormantes, et donc résistante à toute fausse manipulation, grâce à une cheville d'arrêt pivotant par rapport au pêne demi-tour et pouvant se déplacer avec ce dernier. La cheville d'arrêt, qui comporte une extrémité d'auberon normalement bloquée par une plaque de retenue, peut pivoter autour du pêne demi-tour pour supprimer le blocage, permettant ainsi un glissement entre la cheville d'arrêt et la plaque de retenue.

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