US 6,226,895 B1 · Footwear construction

Abstract

A shoe construction having a sole with an outsole shell that is filled with a filling material, such as polyurethane foam, and secured to the upper by a welt. The sole includes an insole having a downwardly extending rib, an outer shell defining a void containing the filling material, and a welt that interconnects the outsole shell and the insole with the upper. To assemble the construction, the upper is lasted and either stitched or stapled to the insole. The welt is then stitched or stapled to the insole/upper combination. Next, the filling material is poured into the void in the outsole shell and the shell is directly attached by the filling material to the upper/insole/welt assembly. The outsole welt is stitched to the shell around the entire periphery of the sole. The stitch extends between a stitch groove in the welt and a stitch groove in the outsole shell.

Claims15

Dependent claims

An article of footwear comprising:

an upper having a lower peripheral edge:
a sole having an insole, a polyurethane material and an outsole shell, said polyurethane material direct-attached to said insole and said upper, said outsole shell defining a void filled with said polyurethane material cured in situ within said void, whereby said polyurethane material is bonded directly to said insole and said outsole shell, said polyurethane material forming a majority of said sole with said outsole shell forming only a protective shell about said direct-attached polyurethane material, and
a welt interconnecting said upper and said sole, said welt secured to said insole and said upper at a first location and to said outsole shell at a second location.

Dependencies are inferred from the claim text.

Footwear construction

Life of this patent

Footwear construction

Life of this patent

Abstract

Claims15