Patent ID: 8690165

Claim:
A wearable device configured to selectively provide roller transportation, comprising: a shoe configured to at least partially accept a foot of a user of the wearable device, the shoe comprising a foot interface surface configured for selective contact with a bottom of the foot; a wheel assembly configured to selectively roll relative to a ground surface in response to rotation of at least a portion of the wheel assembly about an axle that is substantially coincident with an axis of rotation; a frame connected between the shoe and the wheel assembly, the frame being configured to selectively transfer forces between the shoe and the wheel assembly and the frame comprising a clearance plane vertically offset from the ground surface; and an attachment system for selective attachment of the shoe to the frame comprising a biased retainer that is carried by the shoe when the shoe is detached from the frame; wherein the biased retainer is configured so that (1) when the shoe is not attached to the frame, the biased retainer is movable in response to moving the shoe and the frame toward each other to allow attachment of the shoe to the frame and (2) when the shoe is attached to the frame, the biased retainer is not movable to allow detachment of the shoe from the frame solely in response to movement of the shoe and the frame away from each other.