Patent ID: 9386820
Filing Date: 2016-07-12
CPC Classification: A43B

Claim Text:
1. A shoe outer sole for relieving pressure from a wearer's metatarsal heads, comprising: a shaft region disposed in the outer sole adapted to underlie metatarsal shafts of the wearer, the shaft region comprising a first lower surface; a ball region disposed in the outer sole adapted to underlie the metatarsal heads of the wearer, the ball region being anterior to the shaft region and comprising a second lower surface; a toe region disposed in the outer sole adapted to underlie the phalanges of the wearer, the toe region being anterior to the ball region and comprising a third lower surface, wherein the second lower surface is raised relative to the first lower surface and the third lower surface; and a cavity positioned under the second lower surface and between the shaft region and toe region, wherein a length of the cavity varies in a transverse direction such that the length of the cavity is larger on a medial side of the outer sole and smaller on a lateral side of the outer sole.