Air cushion shoe sole
OwnerIng-Chung Huanginventor
Life of this patent
Estimating the term…
Abstract
An air cushion shoe sole which is preferably blow molded of elastomeric material and has at least one cavity which in cross-section is substantially rectilinear. The cavity has a number of depressions and each cavity has an air valve for introducing a shock absorbing material, namely gas, liquid, or a combination thereof into that cavity. Each air valve has means in it for automatically bleeding off a portion of the shock absorbing material introduced into the cavity once the pressure of that material reaches a predetermined level.
Claims17
An air cushion shoe sole comprising a molded--three dimensional enclosed envelope of elastomeric material defining internal cavity means substantially coextensive with the envelope, the envelope having substantially flat top, bottom, and side walls, and a plurality of depressions directed inwardly at least from the top wall, the depressions forming inner walls internally of the cavity means for resisting vertical compression of the envelope, said inner walls dividing the cavity means into intercommunicating cells with substantially rectilinear surfaces, at least one combination inflation and relief valve of resilient material extending from a side wall of the envelope, the valve comprising a tubular body member with an axial throughbore for the supply and delivery of inflation fluid to and from the cavity means, and elastic means encircling the body for closing the throughbore unless pressure of fluid therein exceeds a predetermined value.
Dependencies are inferred from the claim text.