Footwear with enhanced cushioning
AssigneeRocky Brands Wholesale LLC
InventorDavid Mitchell
Life of this patent
Estimating the term…
Abstract
Footwear includes an insole of low density polyurethane and an integral border for attaching the insole to the upper and having an integral support surface for attaching a steel shank. The footwear includes the insole and two contiguous cushioning layers.
Claims30
Footwear comprising an upper and at least two contiguous cushioned layers comprising polyurethane of different densities and in which one of said cushioned layers includes a border of different material than the polyurethane and wherein the border of said cushioned layer is secured to the upper.
Footwear having an insole comprising polyurethane and a border of different material than the polyurethane and wherein the border of said insole is secured to an upper of said footwear.
A method of producing footwear comprising the steps of:
- a. providing a footwear upper;
- b. providing at least two contiguous cushioned layers comprising polyurethane of different densities in said footwear;
- c. providing a border of different material than said polyurethane on one of said cushioned layers;
- and
- d. securing said border to the upper.
A method of producing an insole for footwear comprising the steps of:
- a. providing a non-woven cloth material having an opening therein in the shape of the insole to be formed;
- b. inserting the cloth material in a mold;
- c. placing polyurethane in the opening in said non-woven cloth material;
- and
- d. molding the polyurethane and non-woven cloth material to form an insole so that the non-woven cloth material provides a border around the polyurethane.
Dependencies are inferred from the claim text.