Security lock supporting master keying

Details Security lock supporting master keying Security lock supporting master keying

E - Fixed Constructions

05

B

E05B 27/06 (2006.01) E05B 27/00 (2006.01)

Patent

CA 2464011

A lock of the type in which a latch means is able to be actuated if elongated members are able to pass through associated slots (54) in latch elements. There are two sets of latch elements (50) in two keyways (48, 49) such that, when the slots (54) in opposed pairs of elements are aligned, the actuating members can pass through. One set of latch elements (54) are positioned by a setter or biscuit (56) and the other set are positioned by a key (58) that corresponds to the shape of the setter to align the slots (54) of corresponding elements in each set. This type of lock is improved by providing at least one latch element (50) in one set (ie in one keyway 48 or 49), with a wider slot (54) to enable master keying. The master key is set to correspond to the highest or lowest position in the wide slot.

Cette invention concerne un verrou du type dans lequel un moyen de verrouillage peut être actionné si des éléments de forme allongée peuvent traverser des encoches (54) connexes dans les éléments de verrouillage. On trouve deux ensembles d'éléments de verrouillage (50) dans deux entrées de clé (48, 49) de sorte que lorsque les encoches (54) d'éléments de verrouillage (50) opposés sont alignées, les éléments actionneurs peuvent traverser. Un des ensemble d'éléments de verrouillage (50) est positionné par un dispositif de positionnement (56), l'autre par une clé (58) correspondant à la forme du dispositif de réglage et permet d'aligner les encoches (54) des éléments correspondants dans chaque ensemble. Ce type de verrou marque un progrès dans la mesure où au moins un élément de verrouillage (50) d'un ensemble [tel qu'une entrée de clé (48) ou (49)] présente une fente (54) plus importante pour l'emploi d'un passe-partout. Le passe-partout est réglé pour correspondre à la position la plus haute ou la plus basse dans l'encoche large.

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