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US 5,224,277 AGranted
Footwear sole providing ventilation, shock absorption and fashion
OwnerKim Sang Doinventor
Life of this patent
Estimating the term…
Abstract
A footwear sole has a waterproof ventilation part secured in the midsole or the outsole, and a horseshoe-shaped shock-absorbing heel member secured in the heel portion of the sole part in which the waterproof and ventilation part is secured. The waterproof and ventilation part includes a buoyancy plate that blocks penetration of water into the sole during bad weather. The shock-absorbing heel member has opposite flanges with an empty space therebetween that insure very good shock-absorbing properties of the shock absorbing heel member.
Claims29
A footwear sole comprising:
- a sole member having a heel portion at one end, said heel portion being made of a thick material formed with a recess extending inwardly from the perimeter of said one end so as to define spaced upper and lower flaps;
- a substantially horseshoe-shaped, shock-absorbing heel member secured in the recess of the heel portion between the flaps, the shock-absorbing heel member having spaced upper and lower walls abutting the upper and lower flaps, respectively, said upper and lower walls having outer end portions defining respective outer end surfaces which are flush with the outer periphery of the upper and lower flaps, and having an at least partially hollow space in an area of the outer end surfaces.
A footwear sole comprising:
- a sole member having a heel portion with an upright outer peripheral side wall and a recess formed in said wall so as to extend along the periphery of the heel portion and inwardly from said side wall, and
- a horseshoe-shaped shock-absorbing element mounted in said recess and having an outer end surface which is substantially flush with said peripheral side wall, said shock-absorbing element comprising two spaced horizontal walls and a vertically deformable means extending between the two horizontal walls having a connection point with the deformable means and a flange portion extending outwardly beyond the connection point, the flanges of the horizontal walls defining at least a partially hollow space therebetween.
A footwear sole comprising:
- an insole;
- a midsole having front and heel portions;
- an outsole having front and heel portions;
- a ventilation chamber formed in the front portion of one of the midsole and of the outsole;
- and
- a waterproof and ventilation part secured in said one of the midsole and the outsole for communicating air to the ventilation chamber of said one of the midsole and the outsole, the waterproof and ventilation part having a housing with at least one external inlet port communicating with the atmosphere outside said sole, and at least one internal port communicating with the ventilation chamber of said one of the midsole and the outsole, and buoyant means supported in said housing and movable, upon penetration of water into the housing through the at least one external inlet port, from a first position in which it permits flow of air between the at least one external inlet port and the at least one internal port, to a second position in which it prevents flow of water from within the housing through the internal port, said buoyant means being unaffected by said air flow.
3 more elements
Dependencies are inferred from the claim text.