US 11,864,626 B2
Method and device for preventing sprained ankles
William Gilmore, Nashville, TN (US)
Filed by William Gilmore, Nashville, TN (US)
Filed on Oct. 12, 2021, as Appl. No. 17/499,206.
Claims priority of provisional application 63/090,633, filed on Oct. 12, 2020.
Prior Publication US 2022/0338595 A1, Oct. 27, 2022
Int. Cl. A43B 17/00 (2006.01); A43B 7/1463 (2022.01); A43B 7/1435 (2022.01); A43B 7/144 (2022.01); A43B 7/1415 (2022.01); A43B 7/1405 (2022.01); A43B 7/1425 (2022.01)
CPC A43B 17/00 (2013.01) [A43B 7/144 (2013.01); A43B 7/1405 (2013.01); A43B 7/1415 (2013.01); A43B 7/1425 (2013.01); A43B 7/1435 (2013.01); A43B 7/1463 (2022.01); A43B 17/006 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A shoe insole comprising an inner sole comprising a forefoot interior quadrant, a forefoot exterior quadrant, a rearfoot interior quadrant, and a rearfoot exterior quadrant,
wherein the inner sole is bounded by a top surface, a bottom surface, a back surface, a front surface, an inner lateral surface, and an outer lateral surface,
wherein the top surface is bounded by the back surface, the front surface, the inner lateral surface, and the outer lateral surface at an exterior top edge,
wherein the bottom surface is bounded by the back surface, the front surface, the inner lateral surface, and the outer lateral surface at an exterior bottom edge, and
wherein the inner sole has a support portion in the rearfoot exterior quadrant having a thickness of greater than about 1.0 cm and one or more of a surface area of from about 12.5 cm2 to about 80 cm2 and a cross-sectional area of from about 2 cm2 to about 12 cm2,
wherein the support portion comprises:
(a) a first layer of EVA foam, wherein the first layer has a thickness of about 0.32 cm;
(b) a second layer of polyurethane foam, wherein the second layer has a thickness of about 0.16 cm; and
(c) a third layer of polyethylene foam, wherein the third layer has a thickness of about 0.64 cm.