Guide and pivot pin cartridge assemblies for folding doors

Claim 1

In a folding door structure including a pair of door sections hingedly connected on a vertical hinge axis and disposed between overhead and bottom guide tracks for horizontal movement between folded and unfolded positions, each folding door section having upper and lower braces and each brace including a pair of vertically spaced horizontal walls, the improvement comprising a prefabricated and preassembled unitized guide pin cartridge assembly for installation on the job site where the folding door structure is being installed on said upper and lower braces of one door section and on the upper brace of the other door section of said pair, and a coacting prefabricated and preassembled unitized and adjustable pivot pin cartridge for installation on said job site on the lower brace of said other door section, all of said guide and pivot pin cartridge assemblies including rectangular cross section pin housings having enlarged heads at one end and cooperating yielding locking tangs projecting from one side thereof near said head, whereby said housings may enter rectangular openings in said vertically spaced horizontal walls of said upper and lower braces with the heads of the housings abutting the outer faces of corresponding walls and said locking tangs lockingly engaged with the opposite faces of said walls of the braces, upper and lower guide track follower elements on the pins of sid guide pin cartridge assemblies, and a pivot extension on the pin of said adjustable pivot pin cartridge assembly, and said rectangular cross section pin housings serving to enclose major portions of the lengths of the guide and pivot pins of said cartridge assemblies along at least two opposite sides thereof.