Shoe, in particular an alpine ski boot

Abstract

A shoe, in particular a ski boot for alpine skiing, has a substantially dimensionally stable sleeve extending from a fixing device on an upper into a calf region of a user. An insert part expands in wedge shape at least along some areas from the lower end of the insert part, the lower end being provided for arranging in the sleeve, to the upper end of the insert part, and which is provided for receiving in a calf section of the sleeve. The sleeve is formed with a material recess in the calf section which is provided for receiving the insert part. The wedge-shaped insert part is at least partly received in the material recess in a lower position. In an upper position, the insert part is arranged such that the material recess is bridged by the insert part to form a hollow chamber.

1 - 15 . (canceled) 
     
     
         16 . A shoe, comprising:
 a substantially dimensionally stable sleeve extending from a fixing device on an upper of the shoe into a calf region of a user;   an insert part having a lower end disposed in said sleeve and expanding in wedge shape at least along some portions from said lower end to an upper end of said insert part, said insert part being configured to be received in a calf section of said sleeve;   said sleeve being formed with a material void in the calf section thereof for receiving said insert part, wherein said wedge-shaped insert part is at least partly received therein when said insert part is in a lower position, while said material void is bridged by said insert part to form a hollow chamber when said insert part in an upper position.   
     
     
         17 . The shoe according to  claim 16 , configured as an alpine ski boot. 
     
     
         18 . The shoe according to  claim 16 , wherein a forward lean angle enclosed between a vertical plane extending through a back end of the shoe and a resting surface of said insert part facing an interior of said sleeve has a value in the upper position at least as great as a value thereof in the lower position. 
     
     
         19 . The shoe according to  claim 18 , wherein the forward lean angle in the lower position is equal to the forward lean angle in the upper position. 
     
     
         20 . The shoe according to  claim 16 , wherein said insert part comprises at least one positioning element protruding on a side facing said sleeve when said insert part is placed within said sleeve. 
     
     
         21 . The shoe according to  claim 20 , wherein said sleeve is formed with an opening for receiving said positioning element in the lower position of said insert part. 
     
     
         22 . The shoe according to  claim 21 , wherein said opening is a through hole. 
     
     
         23 . The shoe according to  claim 20 , wherein said positioning element rests on an upper rim of said sleeve in the upper position. 
     
     
         24 . The shoe according to  claim 20 , wherein said at least one positioning element is one of two positioning elements spaced apart from one another. 
     
     
         25 . The shoe according to  claim 16 , wherein said insert part comprises at least one ridge expands in a wedge shape on a side thereof facing said sleeve. 
     
     
         26 . The shoe according to  claim 25 , wherein said at least one ridge is one of two wedge-shaped ridges expanding towards said positioning elements, with each said positioning element protruding beyond an end of the respective said ridge. 
     
     
         27 . The shoe according to  claim 25 , wherein said material void is appropriately configured for receiving said ridge. 
     
     
         28 . The shoe according to  claim 25 , wherein said wedge-shaped insert part is formed with an opening angle between 10° and 20°. 
     
     
         29 . The shoe according to  claim 28 , wherein said opening angle is substantially 15°. 
     
     
         30 . The shoe according to  claim 28 , wherein said opening angle is defined in a vicinity of said ridges. 
     
     
         31 . The shoe according to  claim 16 , wherein said sleeve is formed of thermoplastic material. 
     
     
         32 . The shoe according to  claim 31 , wherein said sleeve is formed of at least one material selected from the group consisting of thermoplastic polyurethane with a hardness of 50 to 70 Shore D and a polyamide elastomer with a hardness of 50 to 70 Shore D. 
     
     
         33 . The shoe according to  claim 16 , wherein at least one of said sleeve and said insert part is made of plastic reinforced by glass fibers or carbon fibers. 
     
     
         34 . The shoe according to  claim 16 , wherein said insert part is an injection-molded part of thermoplastic material. 
     
     
         35 . An insert part for a shoe according to  claim 16 , the insert part comprising a section that expands in a wedge shape, wherein the wedge-shaped section of the insert part is formed such that the wedge-shaped section may be at least partly received in the material void of the sleeve when in a lower position and the material recess may be bridged by the insert part to form a hollow chamber when in an upper position.