Improved squiggle keys and cylinder locks for squiggle keys

E - Fixed Constructions – 05 – B

Patent

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Details

E05B 29/00 (2006.01) E05B 19/00 (2006.01) E05B 27/00 (2006.01)

Patent

CA 2300263

Improved squiggle keys (50) and cylinder locks include a squiggle key groove (54) formed along a first broad surface of the squiggle key (50) and a plurality of bittings (56) formed along a second opposite broad surface of the squiggle key (50). The cylinder lock includes a plurality of rotatable discs (40) that have groove-following elements (45) that are rotated via the groove (54) on the key. The rotatable discs (40) operate to prevent a plug of the cylinder lock from rotating unless a correct squiggle key (50) is inserted into a keyway in the plug. The bittings (56) formed along the second opposite broad surface of the squiggle key (50) are generally circular and have inner regions with a different depth than outer regions of the bittings (56). As a result, tumbler pins (31-35) can be located along the inner and/or outer regions of the bittings (56) which enables increased keying capabilities and variations and which enables a common lock to be operated by keys for different cylinder locks.

L'invention concerne des clés améliorées (50) à surface structurée et des serrures à barillet. Ladite clé (50) à surface structurée comprend une rainure (54) formée le long d'une première surface étendue de celle-ci (50) et plusieurs encoches (56) formées le long d'une deuxième surface étendue de celle-ci (50). La serrure à barillet présente plusieurs disques rotatifs (40) dotés d'éléments (45) suivant la rainure, qui sont tournés à l'aide de la rainure (54) de la clé. Les disques rotatifs (40) sont conçus pour empêcher un barillet du cylindre à barillet de tourner sauf si la bonne clé (50) à surface structurée est insérée dans une entrée de clé du barillet. Les encoches (56) formées le long de la deuxième surface étendue de la clé à surface structurée (50) sont généralement circulaires et comportent des régions internes de profondeur différente de celle des régions extérieures des encoches (56). En conséquence, des broches à gorge (31-35) peuvent être placées le long des régions intérieures et/ou extérieures des encoches (56), ce qui permet l'augmentation des types de clés et des variantes, un verrou commun pouvant être actionné par des clés pour différentes serrures à barillet.

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