Snowmobile ski

Abstract

A snowmobile ski includes a bridge portion adapted to connect to a ski leg of a snowmobile, a ski body having a top surface adapted to be connected to the bridge and a bottom surface adapted for moving over snow, the bottom surface having a front portion, a middle portion and a rear portion, a single keel running lengthwise exclusively along the middle portion and the rear portion of bottom surface of the ski body, and a runner provided on the keel.

I claim:  
     
         1 . A snowmobile ski, comprising: 
 a bridge adapted to connect to a ski leg of a snowmobile;    a ski body having a top surface adapted to be connected to the bridge and a bottom surface adapted for moving over snow, the bottom surface having a front portion, a middle portion and a rear portion; and    a single keel running lengthwise exclusively along the middle portion and the rear portion of the bottom surface of the ski body.    
     
     
         2 . The snowmobile ski of  claim 1 , further comprising a runner provided on the keel.  
     
     
         3 . The snowmobile ski of  claim 1 , wherein at least a portion of the bottom surface of the front portion has a convex cross-section.  
     
     
         4 . The snowmobile ski of  claim 2 , wherein the runner runs lengthwise exclusively along the middle portion and the rear portion of the bottom surface of the ski body.  
     
     
         5 . A snowmobile ski, comprising: 
 a ski body having a top surface for connecting to a snowmobile and a bottom surface adapted for moving over snow, the bottom surface extending longitudinally along a front portion, a middle portion and a rear portion,    wherein the bottom surface of the front portion includes a convex protrusion extending longitudinally along the bottom surface from the front portion toward the rear portion of the ski.    
     
     
         6 . The snowmobile ski of  claim 5 , further comprising: 
 a single keel running lengthwise exclusively along the middle portion and the rear portion of bottom surface of the ski body; and    a runner provided on the keel running lengthwise exclusively along the middle portion and the rear portion of the bottom surface of the ski body,    wherein the convex protrusion meshes with the single keel along the middle portion of the ski body.    
     
     
         7 . A snowmobile ski, comprising: 
 a bridge adapted to connect to a ski leg of a snowmobile;    a ski body having a top surface adapted to be connected to the bridge and a bottom surface adapted for moving over snow, the bottom surface having a front portion, a middle portion and a rear portion; and    a single keel running lengthwise along the middle portion and the rear portion of bottom surface of the ski body,    wherein the front portion of the bottom surface has a smooth curve protrusion that blends into the keel.    
     
     
         8 . The snowmobile ski of  claim 7 , further comprising a runner provided on the keel running lengthwise exclusively along the middle portion and the rear portion of the bottom surface of the ski body.  
     
     
         9 . A snowmobile ski, comprising: 
 a bridge adapted to connect to a ski leg of a snowmobile;    a ski body having a top surface adapted to be connected to the bridge and a bottom surface adapted for moving over snow, the bottom surface having a front portion, a middle portion and a rear portion; and    a keel running lengthwise exclusively along the middle portion and the rear portion of the bottom surface of the ski body, wherein a longitudinally extending centerline of the keel is substantially aligned with a longitudinally extending centerline of the ski body.    
     
     
         10 . The snowmobile ski of  claim 8 , further comprising a runner provided on the keel.