Insert type footwear

Claim 2

A sock-type article adapted to be worn on the foot and having sole and heel regions adjacent to the sole and heel regions of a foot when worn, said sock-type article being substantially entirely formed of a lightweight, flexible material defining an interior space receivable of a foot, said material being substantially waterproof to prevent passage of water into said interior of the sock-type article through said material and at the same time moisture vapor permeable to allow passage of evaporated perspiration which may be formed on the foot from said interior of the sock-type article through said material, whereby the foot will be maintained as dry as possible when the sock-type article is worn thereon.

Claim 3

The combination of claim 1 wherein the sock-type article is constructed from said material having edges which are joined to each other by seams which are waterproof to prevent passage of water into said interior of the sock-type article through said seams, and wherein none of said seams exist in said sole and heel regions of the sock-type article.

Claim 4

The combination of claim 2 wherein the sock-type article is constructed from a one-piece pattern of said waterproof and vapor permeable material.

Claim 5

The combination of claim 3 wherein said one-piece pattern includes a central region and a pair of side regions, said central region having rearward and forward peripheral edge regions which extend beyond said sole and heel regions of the sock-type article, and wherein a plurality of seams exist, none of which exist in said sole and heel regions of the sock-type article.

Claim 6

A sock-type article adapted to be worn on the foot within shoe-type apparel, comprising an article formed of lightweight flexible material which is waterproof to prevent moisture from entering into the interior thereof through said material, and which is breathable to allow water vapor to pass out from the interior thereof through said material, said article being formed from a one-piece pattern of said material whose edges are joined to each other at at least four seams of which none run adjacent to the sole or heel regions of the foot, and wherein said pattern includes a central region and a pair of side regions, said central region having rearward and forward peripheral edge regions which extend beyond the area to be contiguous to the sole and heel regions of the foot.

Claim 7

A sock-type article adapted to be worn on the foot within shoe-type apparel, comprising an article formed of lightweight flexible material which is waterproof to prevent moisture from entering into the interior thereof through said material, and which is breathable to allow water vapor to pass out from the interior thereof through said material, said article being formed from a one-piece pattern of said material whose edges are joined to each other at at least four seams of which none run adjacent to the sole or heel regions of the foot, and wherein said pattern includes a central region and a pair of side regions, said central region having rearward and forward peripheral edge regions which extend beyond the area to be contiguous to the sole and heel regions of the foot.

Claim 8

The combination of claim 3 wherein said side regions of said one-piece pattern extend a substantial distance laterally from the central region and terminate at edges which constitute the upper edge of the article when the latter is formed, which upper edge is located above the ankle region of a foot when worn.

Claim 9

The combination of claim 5 wherein said side regions of said one-piece pattern extend a substantial distance laterally from the central region and terminate at edges which constitute the upper edge of the article when the latter is formed, which upper edge is located above the ankle region of a foot when worn.