Delay mechanism for retarding relative movement between two members

摘要

An apparatus for retarding rotation of a pin member, comprising: a sleeve having a body and a chamber within the body, the sleeve body comprising first and second coaxial body segments, the first body segment including a reduced-diameter portion and the second body segment including a counterbore sized to receive the reduced-diameter portion, the reduced diameter portion being axially longer than the counterbore, such that a circumferential recess is formed when the reduced diameter portion is slidingly received in the counterbore; a pair of aligned apertures in the body; a shaft disposed through the apertures and adapted for rotation within the chamber; viscous material surrounding the shaft and substantially filling the shaft and substantially filling the voids in the chamber; and extensions on the shaft for engaging the viscous material and retarding rotation of the shaft in the chamber.