Caterpillar Inc.
Mass tuned ladder rung and ladder formed therewith

Abstract:

A rung which can be installed in a ladder is disclosed which comprises a first plate having first and second ends, each of the first and second ends having a relief tab and an opening, and a second plate, the second plate being identical to the first plate, the first and second plates being nestable such that the relief tabs of the first plate insert through the openings of the second plate to form the rungs.