Demolition shears

Abstract

Demolition shears include a lower jaw, an upper jaw pivotally mounted relative to the lower jaw, and a cutting blade having at least a first cutting edge and a second cutting edge, the cutting blade to be secured to one of the upper jaw and the lower jaw to expose the first cutting edge, and the cutting blade being repositionable to be secured to one of the upper jaw and the lower jaw to expose the second cutting edge.

1 . A demolition shears, comprising:
 a lower jaw;   an upper jaw pivotally mounted relative to the lower jaw; and   a cutting blade having at least a first cutting edge and a second cutting edge,   the cutting blade to be secured to one of the upper jaw and the lower jaw to expose the first cutting edge,   the cutting blade being repositionable to be secured to one of the upper jaw and the lower jaw to expose the second cutting edge.   
     
     
         2 . The demolition shears of  claim 1 , wherein:
 the cutting blade to be rotated about a first axis in a first direction to be repositioned to expose the second cutting edge.   
     
     
         3 . The demolition shears of  claim 2 , wherein:
 the cutting blade to be rotated about a second axis perpendicular to the first axis to be repositioned to expose a third cutting edge of the cutting blade.   
     
     
         4 . The demolition shears of  claim 3 , wherein:
 the cutting blade to be rotated about the first axis in a second direction opposite the first direction to be repositioned to expose a fourth cutting edge of the cutting blade.   
     
     
         5 . The demolition shears of  claim 1 , wherein:
 the first cutting edge and the second cutting edge of the cutting blade each having a non-linear profile.   
     
     
         6 . The demolition shears of  claim 5 , wherein:
 the non-linear profile of the first cutting edge and the second cutting edge of the cutting blade including a curvilinear portion.   
     
     
         7 . The demolition shears of  claim 6 , wherein:
 the curvilinear portion of the first cutting edge and the second cutting edge of the cutting blade having a radius.   
     
     
         8 . The demolition shears of  claim 1 , further comprising:
 a guide blade having a guide blade cutting edge,   the guide blade to be secured to the lower jaw to expose the guide blade cutting edge.   
     
     
         9 . The demolition shears of  claim 1 , further comprising:
 a cross blade having a first cross blade cutting edge and a second cross blade cutting edge opposite the first cross blade cutting edge,   the cross blade to be secured to the lower jaw to expose the first cross blade cutting edge,   the cross blade being repositionable to be secured to the lower jaw to expose the second cross blade cutting edge.   
     
     
         10 . The demolition shears of  claim 9 , wherein:
 the first cross blade cutting edge and the second cross blade cutting edge of the cross blade each having a non-linear profile.   
     
     
         11 . The demolition shears of  claim 1 , further comprising:
 a piercing tip having a front cutting edge and side cutting edges,   the piercing tip to be secured to the upper jaw,   the front cutting edge of the piercing tip having a non-linear profile.   
     
     
         12 . A demolition shears, comprising:
 a lower jaw;   an upper jaw pivotally mounted relative to the lower jaw; and   a cutting blade having a first cutting edge, a second cutting edge, a third cutting edge, and a fourth cutting edge,   the cutting blade to be positioned on one of the upper jaw and the lower jaw to expose the first cutting edge,   the cutting blade to be rotated about a first axis in a first direction to be repositioned on one of the upper jaw and the lower jaw to expose the second cutting edge,   the cutting blade to be rotated about a second axis perpendicular to the first axis to be repositioned on one of the upper jaw and the lower jaw to expose the third cutting edge,   the cutting blade to be rotated about the first axis in a second direction opposite the first direction to be repositioned on one of the upper jaw and the lower jaw to expose the fourth cutting edge.   
     
     
         13 . The demolition shears of  claim 12 , wherein:
 the first cutting edge, the second cutting edge, the third cutting edge, and the fourth cutting edge of the cutting blade each having a non-linear profile.   
     
     
         14 . The demolition shears of  claim 13 , wherein:
 the non-linear profile including a curvilinear portion.   
     
     
         15 . The demolition shears of  claim 14 , wherein:
 the curvilinear portion having a radius.