Patent ID: 6994184
Filing Date: 2006-02-07
Classification: E04F,E06C

Abstract:
1. A folding ladder configured for installation in an opening to provide access between one floor or space and another floor or space, comprising: an upper ladder section comprising a left ladder rail and a right ladder rail; a lower ladder section comprising a left ladder rail and a right ladder rail; a hinge rotatably connecting the upper ladder section left ladder rail to the lower ladder section left ladder rail and rotatably connecting the upper ladder section right ladder rail to the lower ladder section right ladder rail; a plurality of steps rotatably disposed between the upper pair of ladder rails and the lower pair of ladder rails, the plurality of steps configured for rotation between a retracted position and a deployed position, wherein at least one step in the plurality of steps rotatably disposed between the upper pair of ladder rails and at least one step in the plurality of steps rotatably disposed between the lower pair of ladder rails are linked together by at least one linkage member, wherein said at least one linkage member causes each of said at least one steps to rotate between a retracted position and a deployed position upon rotational movement of said upper ladder section relative to said lower ladder section about said hinge between a closed position and an open position.