Patent attributes
A telescoping ladder includes first and second telescoping ladder racks each having a top portion and including an outer ladder rack having first and second outer legs having interior surfaces that are sliding surfaces; and an inner ladder rack having a first and second inner legs having a sliding surface that slidably engages the sliding surface of the first outer leg along the length thereof, and the second inner leg having a sliding surface that slidably engages the sliding surface of the second outer leg along the length thereof. The top portions are pivotally connected to form a structure that articulates to open and close the ladder. The outer and inner ladder racks are configured as elongated hollow tubes that have a cross section of a closed tube having a protuberance extending therefrom. The outer legs have lateral support legs having protruding ribs to form a stabilizing support structure.
