Multi-panel closures

Claim 1

A closure comprising: a post rotatably supported in a pair of bearings mutually spaced in a vertical direction and each adapted to be mounted on a fixed surface; a cam track integral with the upper one of said bearings; a cam follower fastening to said post and adapted to rotate therewith, said cam follower being adapted to ride on said cam track and to return to a preferred position thereon; a horizontal boss integral with said cam follower; a plurality of coplanar panels mutually aligned along at least one edge of each panel, said last-recited edges jointly being substantially coextensive in length to said post and parallel thereto, adjacent ones of said panels being spaced from each other along a pair of mutually facing, substantially horizontal edges; a first split sleeve coaxially mounted on said post so as to rotate therewith, said first sleeve including a pair of substantially parallel flanges substantially coextensive in length with said first sleeve, said flanges being secured to opposite sides of said plurality of panels along said one edge of each panel; a second split sleeve coaxially mounted on said boss at right angles to said post so as to rotate with said post, said second sleeve including a pair of substantially parallel flanges substantially coextensive in length with said second sleeve, said last-recited flanges being secured to opposite sides of the uppermost one of said plurality of panels along the upper horizontal edge thereof; and a substantially rigid fastening member positioned between at least one pair of said facing panel edges, said fastening member comprising a pair of channels disposed in back-to-back relationship on opposite sides of a bridge section, each of said channels including a pair of converging side sections integral with said bridge section and frictionally gripping one of said pair of mutually facing panel edges.