Raceway ratchet limiter

Abstract

A clicker ratchet limiter is a mechanical device that allows one part to move a defined distance relative to another by means of a linkage moving around a closed circuit track with a minimum and maximum position, and by means of a captured spring to allow for propulsion of the linkage around the track. One part, the anchor, is fastened to an anchoring object, leaving the top part to move between a minimum and maximum displacement position. Switching between positions is effected by compressing an internal coil spring by pressing down on the top part. The linkage device is a ratchet but not robust to pulling of the top off of the anchored anchor part. A hook and step displacement limiter is provided within each raceway pair of rib and inverted rib on the anchor and top part, respectively, to prevent pulling off of the top.

Dependencies are inferred from the claim text.