Dampened compression spring rod

F - Mech Eng,Light,Heat,Weapons – 16 – F

Patent

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Details

F16F 3/04 (2006.01) E05F 1/10 (2006.01) E05F 3/02 (2006.01) E05F 3/10 (2006.01)

Patent

CA 2473237

A spring system for relatively displacing elements attached to end mounts of the rod assembly comprises a housing having a rod member (30) movable between extended and retracted positions relative thereto, and a first compression spring (120) in the housing surrounded by a second compression spring (122) for biasing the rod member to one of an extended or retracted position relative to the housing, the two springs are oppositely wound whereby, from a compressed condition, the spring rod exerts an expansion force which increases at a linear rate. The spring system includes a valve arrangement (138, 140) to control the rate at which the spring rod moves from a retracted position to an extended position.

La présente invention concerne un système de ressorts permettant le déplacement relatif d'éléments fixés aux montures en extrémité d'un ensemble de tiges comportant un logement comprenant un élément de tige mobile entre des positions déployée et escamotée par rapport au logement, et un premier ressort compressible dans le logement entouré d'un deuxième ressort compressible destiné à solliciter l'élément de tige vers l'une des positions déployée ou escamotée par rapport au logement. Les deux ressorts sont enroulés de manière opposée grâce à quoi, à partir d'un état comprimé, la tige à ressorts exerce une force de dilatation qui accroît à un taux linéaire. Le système de ressorts comprend un dispositif de soupape destiné au contrôle du taux auquel la tige à ressorts se déplace depuis une position escamotée vers une position déployée.

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