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US 5,685,091 AGranted
Sealed waterproof footwear
AssigneeW. L. Gore & Associates, Inc.
InventorSeshamamba Yalamanchili
Life of this patent
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Abstract
A waterproof footwear article is provided having a layer of a two component polyurethane system located above the insole board. The polyurethane system also may penetrate the connecting region between the insole board and footwear upper. A process of waterproofing a footwear article is also provided which includes the step of introducing a two component polyurethane system into the interior of the footwear article and optionally applying forces to cause the polyurethane system to penetrate the various article layers.
Claims3
A waterproof footwear article comprising:
- (a) an upper comprising multilayers in which an intermediate layer is waterproof;
- (b) an insole having a top surface and a bottom surface positioned and constructed such that a lower region of the upper is attached to a bottom edge of the insole and wherein end regions of the insole are in contact with the upper in a connecting region;
- (c) a layer of a two component polyurethane system forming a layer covering at least a portion of the insole top surface in the connecting region;
- (d) said two component polyurethane system impregnating a portion of the waterproof intermediate layer of the upper in said connecting region;
- (e) an outer sole covering the bottom surface of the insole.
2 more elements
Dependencies are inferred from the claim text.