Outer sole having resilient mid-sole with floating hinges

Details Outer sole having resilient mid-sole with floating hinges Outer sole having resilient mid-sole with floating hinges

A - Human Necessities

43

B

A43B 13/18 (2006.01) A43B 7/32 (2006.01)

Patent

CA 2528753

An outer sole includes an upper sole, a tread layer disposed below the upper sole, and a resilient mid-sole disposed between the upper sole and the tread layer. The mid-sole resists compression under load, and comprises at least one floating hinge extending transversely to the longitudinal axis of the sole. Each floating hinge includes an upper resilient convex leaf spring, a lower resilient convex leaf spring, and a U-spring joining the leaf springs together. Each leaf spring has a root and a head opposite the root. Each U-spring has a pair of integrally-formed legs, each upper leaf spring is integrally formed at the root thereof with the upper sole, and each lower leaf spring is integrally formed at the root thereof with the tread layer. The leaf springs of each floating hinge are integrally joined at their heads to one of the legs of the associated U-spring.

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