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US 6,470,599 B1Granted
Climbing shoe with concave sole
OwnerYoung Chuinventor
Life of this patent
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Abstract
A climbing shoe includes an inner sole, an outer sole and a molded middle sole between the inner sole and the outer sole. The middle sole is concave in shape. The outer sole conforms to the concave shape of the middle sole. The concave shape allows the outer sole to hook on a rocky ledge. The molded middle sole provides a structure that causes the concave outer sole to substantially maintain the concave shape when pressure is applied to the outer sole.
Claims13
A climbing sloe comprising:
- a) an upper portion;
- b) an inner sole attached to the upper portion;
- c) an outer sole attached to the inner sole and having a front section and a back section;
- and
- d) a middle sole embedded between the inner sole and the outer sole at the front section of the outer sole;
- wherein the middle sole having a concave surface, wherein an edge of the middle sole is spaced from an edge of the outer sole by a predetermined and substantially uniform distance at the front section of the outer sole, wherein the concave surface of the middle sole is attached to the front section of the outer sole, wherein the front section conforms to the concave shape of the middle sole, wherein the middle sole has stiffness to maintain the concave shape when a climber applies pressure to the climbing shoe during rock climbing, whereby the front section can hook on a rocky ledge, and whereby the front section of the outer sole substantially maintains the concave shape when pressure is applied to the outer sole.
3 more elements
Dependencies are inferred from the claim text.