Blade Sharpener

Abstract

A blade sharpener including a frame casing body having a grip and a grinding chamber and a grinder assembly detachably installed in the grinding chamber in which the grinder assembly is formed by a grinder casing body having a pair of vertical walls facing each other, a supporting window provided in each of the vertical walls, a rotary shaft provided between the vertical end walls with both end thereof in the supporting windows of the vertical walls, an abrasive wheel provided on the rotary shaft at the axial center, and a pair of lateral coil springs each provided on either side of the abrasive wheel. The rotary shaft can be supported by a pair of longitudinal coil springs installed in the vertical walls.

1 . A blade sharpener comprising:
 a frame casing body having a grinding chamber; and   a grinder assembly detachably installed in the grinding chamber, said grinder assembly being comprised of:
 a grinder casing body having a pair of vertical walls facing each other,
 a supporting window provided in each of said pair of vertical walls, 
 
 a rotary shaft provided between said pair of vertical walls with both end thereof in said supporting windows of said vertical walls, 
 a grinding element provided on said rotary shaft at substantially an axial center thereof, and 
 a pair of horizontally urging means each provided on either side of said grinding element. 
   
     
     
         2 . A blade sharpener comprising:
 a frame casing body having a grinding chamber; and   a grinder assembly detachably installed in the grinding chamber, said grinder assembly being comprised of:
 a grinder casing body having a pair of vertical walls facing each other, 
 a supporting window provided in each of said pair of vertical walls, 
 a vertically urging means provided in each of said vertical walls, 
 a rotary shaft provided between said pair of vertical walls with both end thereof in said supporting windows of said vertical walls and on said vertically urging means, 
 a grinding element provided on said rotary shaft at substantially an axial center thereof, and 
 a pair of horizontally urging means each provided on either side of said grinding element. 
   
     
     
         3 . The blade sharpener according to  claim 1 , wherein said grinding element is in substantially a cylindrical shape with a V-groove at an axial center thereof. 
     
     
         4 . The blade sharpener according to  claim 2 , wherein said grinding element is in substantially a cylindrical shape with a V-groove at an axial center thereof. 
     
     
         5 . The blade sharpener according to  claim 1 , wherein said grinding chamber is covered by a cover casing formed therein with a blade guide slit and said grinder assembly is disposed under said blade guide slit so that the rotary shaft of the grinder assembly is set to be at a biased angle with respect to a length direction of the blade guide slit. 
     
     
         6 . The blade sharpener according to  claim 2 , wherein said grinding chamber is covered by a cover casing formed therein with a blade guide slit and said grinder assembly is disposed under said blade guide slit so that the rotary shaft of the grinder assembly is set to be at a biased angle with respect to a length direction of the blade guide slit. 
     
     
         7 . The blade sharpener according to  claim 3 , wherein said grinding element is formed by a pair of beveled disks of different diameters so that smaller diameter sides of said pair of abrasive wheels of different diameters are connected to each other to form the V-groove. 
     
     
         8 . The blade sharpener according to  claim 4 , wherein said grinding element is formed by a pair of beveled disks of different diameters so that smaller diameter sides of said pair of abrasive wheels of different diameters are connected to each other to form the V-groove. 
     
     
         9 . The blade sharpener according to  claim 1 , wherein each of said horizontally urging means is a coil spring. 
     
     
         10 . The blade sharpener according to  claim 2 , wherein each of said horizontally urging means is a coil spring.