Foldable ladder

A self-storing foldable ladder comprising a pair of companion side rails, a plurality of transverse rung members mounted at spaced intervals between said rails, said rung members including an upper wall defining a tread surface, a bottom wall and two opposed side walls, said side walls having a longitudinal groove substantially coextensive with the rung, pivot means in one of said side rails, said pivot means including a pin extending from said rail with one end of each of said rung members being journalled about a respective pin, guide means in the other of said side rails, said guide means including a stud mounted to said rail, with a head of said stud being slidably received in each of said longitudinal grooves, said rungs being swingably displaceable about said pivot means as the side rails are moved into abutting contact, locking means mounted in one of said side rails, said locking means including a hooking latch member, said latch member being adapted for interfitting engagement with one of said rung members by insertion through an opening in the upper wall to stabilize the ladder when in an operational mode, further including a recess within the bottom wall of said rung, said recess being adapted for interfitting engagement by the latch member when the side rails are in abutting contact to secure the side rails in a storage mode whereby the ladder may be carried in a substantially horizontal position.