US Patent 10399834 Levelling group for aerial work platforms

A supporting and levelling group for aerial work platforms includes a support base for supporting a containing cage of an aerial work platform and a support frame hinged to the support base so as to be able to oscillate with respect to an oscillation axis. The supporting and levelling group also includes at least a pair of ground rest elements hinged independently to the support frame, with respect to respective articulation axes parallel to one another and substantially perpendicular to the oscillation axis, such as to be able to independently vary a height thereof with respect to the support base.