Patent Document ID: 20020074749
Application ID: 10076954
Patent Flag: 0

Claim One:
1. An apparatus for use on a surface, the apparatus operable to wear on one's foot to transition from a walking state or a running state to a heel rolling state, the apparatus comprising: a footwear having a front, a back, an upper part, and a sole, the sole includes: a forefoot portion to engage the surface while in the walking state and the running state, an arch portion, and a heel portion with an opening formed in at least a portion of the heel portion of the sole; an axle having a first segment and a second segment; and at least one wheel rotatably mounted on the axle between the first segment of the axle and the second segment of the axle wherein the at least one wheel rotatably mounted on the axle includes a first portion, a second portion and is positioned such that the first portion of the wheel resides within the opening formed in the sole of the footwear and such that the second portion of the wheel resides below the opening formed in the sole of the footwear, wherein the apparatus is operable to allow one to transition from the walking state or the running state to the heel rolling state where the at least one wheel rotatably mounted on the axle contacts the surface to roll.