Anti-pinch knuckle for bidirectional sleeve

摘要

An articulating strut capable of assuming an extended in-line and a folded configuration with rigid cylindrical tubing having proximate ends configured to fixably receive an offset hinged insert that provides for folding and unfolding of said strut. When fully unfolded the strut acts as a single rigid structural support member held in the locked position by a bidirectional slidable locking sleeve. The hinged insert has shapes and curved surfaces which together with offset hinge pins tends to expel the sleeve from a pinch possibility at the folding joint. Convex and concave linkage shapes together with rounded surfaces which bear against a rounded sleeve end avoids sleeve pinch.