Deadbolt with infinitely adjustable backset

Details Deadbolt with infinitely adjustable backset Deadbolt with infinitely adjustable backset

E - Fixed Constructions

05

C

E05C 1/08 (2006.01) E05B 53/00 (2006.01) E05B 63/06 (2006.01) E05B 63/20 (2006.01) E05B 63/00 (2006.01)

Patent

CA 2144718

A door latch has a case and a bolt movable within the case between an extended position in which the bolt extends forwardly of the case and a retracted position in which the bolt is positioned within the case. A swivel is mounted in the case for turning movement and a link connects the swivel and the bolt whereby turning of the swivel moves the bolt between the extended and retracted positions. The swivel is movable relative to the forward end of the case for adjusting backset to any distance between defined backset adjustment limits. The bolt, link and case have cooperating portions thereof which hold the bolt in a fully extended position, resisting inward movement thereof except by turning of the swivel, at either limit of backset adjustment and at any backset adjustment position therebetween.

Cette invention concerne une serrure de porte composé d'un boîtier et d'un pêne mobile entre une position sortie par rapport à la têtière et une position rétractée à l'intérieur de boîtier. Un fouillot monté à tourillon dans le boîtier et raccordé au pêne par un bras de commande sert à déplacer le pêne entre ses positions sortie et rétractée. La position du fouillot est réglable par rapport à la têtière pour modifier la distance d'entrée du pêne entre deux valeurs limites définies. Le pêne, le bras de commande et le boîtier comportent des parties qui coopèrent pour maintenir le pêne en position entièrement sortie contre tout effort d'escamotage sauf au moyen du fouillot, et ce aux réglages limites de la distance d'entrée ainsi qu'à tout réglage intermédiaire de celle-ci.

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