US Patent 11180319 Skid system for load transport apparatus

A walking apparatus uses a unique single substantially planar interface between the top of support foot and the bottom of load plate to move a load both laterally, longitudinally, and in any curved, angular, diagonal, or non-linear direction. The single substantially planar interface used for moving the load plate in different directions provides the walking apparatus with a low vertical profile that can be installed in load bearing frames with lower ground clearances. In one example, a load bearing device provides a single steering plane movable over a support foot in different directions. A travel mechanism is coupled between the support foot and the load bearing device and is configured to change a horizontal path of the load while the weight of the load is transferred onto the support foot and the travel mechanism is moving the load relative to the support foot.