Sole construction for footwear

Details Sole construction for footwear Sole construction for footwear

A - Human Necessities

43

B

12/112, 36/6

A43B 5/06 (2006.01) A43B 13/12 (2006.01) A43B 13/38 (2006.01)

Patent

CA 1234256

Sole Construction for Footwear Abstract The manufacture of a sole unit for footwear, such as an athletic shoe including an integral midsole/wedge or a sepa- rable wedge for use with a midsole. The integral midsole/ wedge unit and the separable wedge for use with a midsole both comprise a shell and a core at least partially encapsulated within the shell. The shell and core comprise plastic materials which have individual strengths and weaknesses in a shoe con- struction, yet provide, as a composite improved results in a shock dispersion and memory system. In the manufacture the core is supported in a mold by a plurality of pins extending from an upper and lower mold half toward a parting line; or the core is supported on one or the other of an outsole or insole of the sole unit and closed in the mold. The material of the shell is poured or injected into the mold.

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