Enhanced security catch assembly for retaining a handle on a...

Details Enhanced security catch assembly for retaining a handle on a... Enhanced security catch assembly for retaining a handle on a...

E - Fixed Constructions

05

B

E05B 3/00 (2006.01) E05B 17/20 (2006.01)

Patent

CA 2498832

A catch assembly that locks a handle onto the spindle of a lock mechanism has enhanced resistance to attempts to remove the handle by forcibly driving the catch assembly inwards. The catch assembly includes a base mounted on the spindle having a threaded opening that receives a corresponding threaded retaining pin. The pin is moved axially by rotating it. When the pin is rotated to an outward position it engages the handle and the threads act to prevent the pin from being forcibly driven inward by transferring axially applied forces to the base. In the preferred design, the head of the retaining pin is softened and specially shaped to limit the torque that can be applied.

L'invention concerne un assemblage de prise verrouillant une poignée sur la tige d'un mécanisme de fermeture possédant une résistance améliorée contre l'enlèvement de la poignée par entraînement forcé de l'assemblage de prise vers l'intérieur. L'assemblage de prise comprend une base montée sur la tige comportant un orifice fileté recevant une goupille filetée de rétention correspondante. La goupille est déplacée axialement par rotation. Lorsque la goupille est tournée vers une position extérieure elle engage la poignée et les filets l'empêchent d'être amenée par force vers l'intérieur par un transfert axial à la base des forces appliquées. Dans la conception préférée, la tête de la goupille de retenue est ramollie et formée spécialement afin de limiter le couple qui peut lui être appliqué.

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