发明名称 Articulated shoe sole
摘要 A flexible shoe, preferably of the sport shoe variety, includes a resilient sole which incorporates one or two transverse hinge joints. The principal hinge joint extends across the ball of the foot and preferably passes under the first metatarso-phalangeal joint. An optional second hinge joint extends across the anterior heel region of the foot. Both hinge joints function to keep the effective sole levers short and thereby permit the foot to function in a natural and comfortable manner. The shank of the sole may be longitudinally stiffened for additional stability.
申请公布号 US4309832(A) 申请公布日期 1982.01.12
申请号 US19800150568 申请日期 1980.05.16
申请人 HUNT, HELEN M. 发明人 HUNT, HELEN M.
分类号 A43B7/22;A43B13/14;(IPC1-7):A43B13/04;A43B13/08 主分类号 A43B7/22
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