Sympatex Technologies Gmbh

Enka America Inc.

Starensier, Inc.

John J Mulcahy

Manfred Gunter Haderlein

Karsten Friedrich Keidel

Liviu Mihai Pavelescu

I David Hill

Harry Van De Ven

Waterproof, water vapor permeable shoe construction including an exterior upper, a waterproof, water vapor permeable functional-layer upper, a lining upper, and a sole. Both the waterproof, water vapor permeable functional-layer upper and the lining upper are in the shape of a sock and introduced separately into the shoe. The functional-layer upper and lining upper are preferably joined to the exterior upper only at a top opening of the shoe construction through which a foot is inserted. The functional-layer upper can be composed of individual pieces that are joined together by seams that are sealed, or it can be seamless. The method for manufacturing the waterproof, water vapor permeable shoe has the steps of manufacturing a exterior upper; manufacturing a waterproof, water vapor permeable functional-layer upper in the shape of a sock; manufacturing a lining upper in the shape of a sock; inserting the functional-layer upper into the exterior upper; inserting the lining upper into the functional-layer upper; and applying a sole from underneath.

Waterproof shoe

A waterproof shoe construction and its method of manufacture is disclosed. The shoe has a liner which is impervious to liquid water but pervious to water vapor, a first innersole and a second innersole with a rib. There is a film impervious to liquid water but pervious to water vapor cemented between the first and second innersoles. A horizontal stitch connects the shoe side panels and the rib of the second innersole between the walls of a channel-shaped welt top, which welt bottom is cemented to the top of an outersole. The method of manufacture is a special blend of stitch down and cement construction techniques which allows for a comfortable, waterproof shoe at a lower manufacturing cost.

Waterproof shoe construction and manufacture

Growing community of inventors

Rochester, NH, United States of America

John J Mulcahy