R. D. Werner Co., Inc.

Paul E Cole

Brian R Fisher

Barry L Guy

Jay S Wasser

A foldable ladder having a plurality of sections which align during use to form a continuous ladder and which are foldable upon themselves for storage in a ceiling frame. The ladder includes hinges for connecting the sections. Each hinge has a first load bearing surface and second load bearing surface which contact each other for support a load when the ladder is extended. The ladder also includes an improved counter balance assembly which connects the ladder to the ceiling frame; and a continuous hinge which connects the ladder to the ceiling frame in a manner which eliminates air from passing between the hinge and the ceiling frame.

Ceiling ladder

Ladder constructions and methods of forming the same wherein box-type or tubular rails are employed. The rung-to-rail connection or joint is formed by providing an opening in one of the rail side walls and an aligned clearance hole in the opposite rail side wall to afford an opening through which a swaging tool is projected and forms an annulus in tight engagement into the inner surfaces surrounding the opening in the first named rail side wall, cooperating swaging means forming an annulus on the outer surfaces surrounding the said opening. A ladder having tubular side rails is hence provided with a rail-to-rung joint on one of the walls by projecting a swaging tool through a clearance hole in an opposite wall. The clearance hole is adapted to be closed by placing a plug in the same and in the event the clearance hole is in the innermost side rail the rung is adapted to be used to close the space provided by the opening in the rail between the rung and one of the side rails.

Growing community of inventors

Masury, OH, United States of America

Paul E Cole