Ski-boot with means for actuating corresponding engaging members of ski-touring bindings

Abstract

Ski-touring boot comprising a shell, a toe provided with a hole on each side for engagement with a corresponding pin of ski bindings and a sole, comprising means for guiding and actuating said pins comprising a frusto-pyramidal seat, the larger base of which forms the bottom part open below the sole and the sides of which extending in the transverse direction (Y-Y) are inclined towards the inside of the seat so as to form elements for guiding the pin in the vertical direction and the surface of which situated inside the boot is inclined upwards and outwards so as to form the element for performing opening in the transverse direction (Y-Y) of the said pins.

1 . A ski-touring boot comprising:
 a shell defining a longitudinal, transverse, and vertical axis;   a sole; and   a toe defining a plurality of holes for engagement with corresponding pins of a ski binding, the plurality of holes being disposed on opposing sides of the toe, wherein each of the plurality of holes is configured for guiding the corresponding pins, and wherein the toe defines each of the holes such that:
 each of the holes comprises a frusto-pyramidal seat that includes a top part, a larger base, a back side, and opposing sides; 
 the larger base defines an opening in the sole, the larger base having a longitudinal width greater than the top part; 
 the opposing sides, extending along the transverse axis, are inclined towards the inside of the seat so as to form elements for guiding the corresponding pin along the vertical axis; and 
 the back side, extending along the longitudinal axis, is inclined upwards and outwards so as to form an element to force open the pins in the transverse direction as the boot is pushed downwards into the ski binding. 
   
     
     
         2 . A boot according to  claim 1 , wherein the top part of the frusto-pyramidal seat has an inner width slightly smaller than the outer diameter of the pins. 
     
     
         3 . A boot according to  claim 1 , wherein the larger base of the frusto-pyramidal seat has a width substantially corresponding to the distance between two nibs of the binding when the binding is in the closed position. 
     
     
         4 . A boot according to  claim 1 , wherein the angle of inclination (α) of the back side of the pyramid frustum is between about 25° and about 80°. 
     
     
         5 . A boot according to  claim 4 , wherein the angle of inclination (α) of the back side of the pyramid frustum is preferably between about 45° and about 65°. 
     
     
         6 . A boot according to  claim 1 , wherein the toe is integral to the boot. 
     
     
         7 . A boot according to  claim 1 , wherein the toe is formed as an external element which is configured to be fitted to the boot. 
     
     
         8 . A ski-touring boot comprising:
 a shell defining a longitudinal, transverse, and vertical axis;   a sole;   a heel including opposing sides; and   a pin projecting from each of the opposing sides, each of the projections being configured to mate with an engaging member of a heel piece of a ski binding.   
     
     
         9 . A boot according to  claim 8 , wherein the heel has on each opposing side an inset seat from which the pin protrudes. 
     
     
         10 . A boot according to  claim 9 , wherein a depth, along the transverse axis, of each inset seat substantially corresponds to the length of the pin. 
     
     
         11 . A boot according to  claim 9 , wherein a depth, along the longitudinal axis, of the said inset seats substantially corresponds to the longitudinal dimension of the engaging member of the heel piece of the ski binding. 
     
     
         12 . A boot according to  claim 8 , wherein the projecting pins are independent of each other and are disposed into respective transverse seats formed in the heel. 
     
     
         13 . A boot according to  claim 8 , wherein the projecting pins are formed as one piece of suitable length inserted inside a through-hole formed in the heel.