A ladder for use with heavy machinery such as farm equipment, the ladder having platform steps, the ladder being convertible between a deployed position for supporting a person or other load, to a storage, scaffold, or ramp position in which the steps lie in a generally planar arrangement. When deployed, the ladder steps remain parallel to each other. The ladder includes two frames, the frames pivotably connected by a plurality of platform steps, one of the frames being pivotably attached to a piece of heavy machinery. The frame nest within one another in the storage configuration. The pivotable attachment to the heavy equipment may be wheels on the ladder frame that engage horizontal tracks on the heavy equipment, allowing the ladder to be lifted up, the frames nested, and the ladder in the storage configuration slid along the tracks and stored.
E06C 1/387 - Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders having tip-up steps
B62B 1/20 - Hand carts having only one axis carrying one or more transport wheelsEquipment therefor in which the load is disposed between the wheel axis and the handles, e.g. wheelbarrows involving parts being collapsible, attachable, detachable or convertible
E06C 1/22 - Ladders capable of standing by themselves with struts which rest on the ground with supporting struts formed as poles with extensible, e.g. telescopic, ladder parts or struts
E06C 1/383 - Foldable ladders in which the longitudinal members are brought together on folding
E06C 1/397 - Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders characterised by having wheels, rollers, or runners
E06C 7/18 - Devices for preventing persons from falling
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