Patent ID: 7255120

Claim:
A device for enhancing mobility of a physically-impaired person, the device comprising: a first member that comprises an elongated portion; and a second member that is configured to slidably receive the elongated portion of the first member and to have negative draft relative to the elongated portion of the first member; wherein extent of slidably receiving of the elongated portion of the first member by the second member helps determine at least two usable heights of the device for enhancing mobility, the device helping support weight of a person, including support in a direction of the slideably receiving; wherein the second member comprises plastic as a basis; wherein the second member defines a cavity that slidably receives the elongated portion of the first member along an axis of sliding, the cavity including an opening that receives the elongated portion of the first member, wherein internal diameter of the cavity becomes progressively greater with increasing depth along a segment of the cavity along the axis of sliding; wherein the negative draft is at least an eighth of a degree from being parallel to the axis of sliding along the segment of the cavity.