초록 ▼

A footwear structure including an outsole and a separate midsole having interlocking shank portions. The outsole has an upward extending arc in the shank area which defines a shank interlock portion on the top surface of the outsole. The midsole has a corresponding arc which defines a shank interloc

A footwear structure including an outsole and a separate midsole having interlocking shank portions. The outsole has an upward extending arc in the shank area which defines a shank interlock portion on the top surface of the outsole. The midsole has a corresponding arc which defines a shank interlock portion on a bottom surface thereof which mates with the arc in the outsole for resisting motion of the midsole relative to the outsole in the case where the midsole is unsecured within the structure to allow for removal of the midsole. A rigid shank insert may be provided between the midsole and outsole. The midsole further includes a plurality of cushioning pads on a bottom surface of the midsole which are separated by air channels. The air channels extend along the length of the midsole and intersect with a heel cavity. A plurality of thru holes are formed in the midsole to extend from the top surface thereof to the air channels in the bottom surface.

대표청구항 ▼

[ What is claimed is:] [1.] A footwear structure comprising:an outsole having a top surface;an upper extending from said outsole to at least partially define a cavity for receiving a foot; anda midsole disposed within said cavity and readily removable from said cavity, said midsole having a bottom s

[ What is claimed is:] [1.] A footwear structure comprising:an outsole having a top surface;an upper extending from said outsole to at least partially define a cavity for receiving a foot; anda midsole disposed within said cavity and readily removable from said cavity, said midsole having a bottom surface disposed above said top surface of said outsole;said top surface of said outsole having an arched shank interlock portion which mates with a corresponding arched shank interlock portion in said bottom surface of said midsole, whereby interlocking of said shank interlock portions of said outsole and said midsole resists motion of said midsole relative to said outsole.