Patent attributes
A mechanical apparatus for human balance training includes a cross bar whose center is attached to a pivotable protrusion extending from a leg having a base. The apparatus also includes a slidable sheath surrounding a portion of the leg proximate to the pivotable protrusion. The slidable sheath has a plurality of allowed positions relative to the leg, each position limiting tilt of the cross bar to a respective angular range. In some embodiments, each allowed position limits tilt of the cross bar by controlling an extent by which the pivotable protrusion extends out from the sheath. In some embodiments, the sheath is threaded relative to the leg and the allowed positions are a continuous range adjusted by twisting the sheath relative to the leg. In some embodiments, the allowed positions are predefined locking positions. Each locking position limits tilt of the cross bar to a respective predefined angular range.