Shoe and inserts or layers for a shoe

Abstract

A shoe insole may include a compressible soft material: a first fiberboard layer below the compressible soft material: a composite rigid stiffener layer below the first fiberboard layer, the composite stiffener layer extending over no more than 60% of the area of the insole: a rigid and flexible composite shank layer below the composite stiffener layer; and a reinforcement layer. A shoe such as a high-heeled shoe may include such an insole.

1 . A shoe insole comprising:
 a compressible soft material;   a first fiberboard material layer below the compressible soft material;   a stiffener layer below the first fiberboard, the stiffener layer extending over no more than 60% of the area of the insole; and   a rigid and flexible composite shank layer below the stiffener layer.   
     
     
         2 . The shoe insole of  claim 1  comprising a second fiberboard material layer below the rigid and flexible composite shank layer, the first fiberboard material layer and second fiberboard material layer enclosing the stiffener layer and shank layer. 
     
     
         3 . The shoe insole of  claim 2 , wherein the first fiberboard material layer is attached to the second fiberboard material layer at the periphery of the first fiberboard material layer. 
     
     
         4 . The shoe insole of  claim 1  wherein the rigid and flexible shank extends from the heel area of the insole to the toe area of the insole. 
     
     
         5 . The shoe insole of  claim 1  wherein the rigid and flexible shank layer and stiffener are attached as one piece. 
     
     
         6 . The shoe insole of  claim 1 , wherein the first fiberboard material layer extends beyond the width of the shank layer and beyond the width of the stiffener layer. 
     
     
         7 . The shoe insole of  claim 1 , wherein the toe area is flexible. 
     
     
         8 . A shoe comprising:
 a compressible material layer;   a first fiberboard material layer;   a composite shank layer below a stiffener layer; and   the stiffener layer extending over no more than 60% of the area of the composite shank layer; wherein the stiffener layer is positioned between the first fiberboard material layer and the shank layer.   
     
     
         9 . The high-heel shoe of  claim 8  comprising a second fiberboard material layer positioned below the rigid and flexible shank layer, the first fiberboard material layer and second fiberboard material layer forming a sandwich around the stiffener layer and shank layer. 
     
     
         10 . The high-heel shoe of  claim 9 , wherein the first fiberboard material layer is attached to the second fiberboard material layer at the edge of the first fiberboard material layer. 
     
     
         11 . The high-heel shoe of  claim 8  wherein the rigid and flexible shank extends from the heel area of the shoe to the toe area of the shoe. 
     
     
         12 . The high-heel shoe of  claim 8  wherein the rigid and flexible shank layer and stiffener are attached, as one piece. 
     
     
         13 . The high-heel shoe of  claim 8 , wherein the first fiberboard material layer extends beyond the width of the shank layer and beyond the width of the stiffener layer. 
     
     
         14 . The high-heel shoe of  claim 8 , wherein the toe area is flexible. 
     
     
         15 . A method comprising:
 cutting two fiberboard layers to each be wider than each of a stiffener layer and a composite layer;   attaching the stiffener layer to the composite layer; and   positioning each fiberboard layer to surround the combination of the stiffener layer and composite layer.   
     
     
         16 . The method of  claim 15 , comprising attaching the two fiberboard layers to each other. 
     
     
         17 . The method of  claim 15 , comprising attaching the two fiberboard layers to each other at their periphery. 
     
     
         18 . The method of  claim 15 , comprising attaching the two fiberboard layers to each other such that the fiberboard layers to not attach to the stiffener layer and composite layer. 
     
     
         19 . The method of  claim 15 , wherein the stiffener layer extends over no more than 60% of the area of the composite layer. 
     
     
         20 . The method of  claim 15  wherein the stiffener layer and the composite are-attached as one piece. 
     
     
         21 . The method of  claim 15 , comprising forming or cutting holes in one or more of the stiffener layer and composite prior to positioning each fiberboard layer to surround the combination of the stiffener layer and composite layer.