Reciprocating saw blade

Abstract

A reciprocating saw blade includes an elongated blade body extending along a blade axis and having a rear end, a front end, a cutting edge having a plurality of teeth, a non-cutting edge opposite the cutting edge; and a tang coupled to the rear end and configured to be received in a blade holder of a powered reciprocating saw. The cutting edge includes inclined and declined cutting edge portions. The inclined cutting edge portion extends away from the blade axis and toward the front end at an acute first angle and extends from a first tooth to a second tooth. The first tooth is closer to the rear end and closer to the blade axis than the second tooth. The declined cutting edge portion extends toward the blade axis and toward the front end at an acute second angle that is greater than the first angle and extends from a third tooth to the first tooth. The first tooth is closer to the front end and closer to the blade axis than the third tooth.

What is claimed is: 
     
         1 . A reciprocating saw blade comprising:
 an elongated blade body extending along a blade axis and having a rear end, a front end, a cutting edge having a plurality of teeth and extending between the rear end and the front end, and a non-cutting edge opposite the cutting edge and extending between the rear end and the front end; and   a tang coupled to the rear end and configured to be received in a blade holder of a powered reciprocating saw,   wherein the cutting edge includes (a) an inclined cutting edge portion extending away from the blade axis and toward the front end from a first tooth to a second tooth closer to the front end than the first tooth, the first tooth having a first tip at a first vertical distance from the horizontal line, and the second tooth having a second tip at a second vertical distance from the horizontal line that is greater than the first vertical distance; (b) a declined cutting edge portion extending toward the blade axis and toward the front end from a third tooth to the first tooth, the first tooth closer to the front end than the third tooth, and the third tooth having a third tip at a third vertical distance from the horizontal line that is greater than the first vertical distance; and (c) a parallel cutting edge portion starting at the second tooth and extending toward the front end from the second tooth substantially parallel to the blade axis,   wherein the inclined cutting edge portion has a first length from the first tooth to the second tooth, the declined cutting edge portion has a second length from the third tooth, the first length greater than the second length.   
     
     
         2 . The reciprocating saw blade of  claim 1 , wherein the cutting edge comprises a plurality of the inclined cutting edge portions, a plurality of the declined cutting edge portions, and a plurality of the parallel cutting edge portion, the cutting edge has a repeating sequence of a declined cutting edge portion, followed by an inclined cutting edge portion, followed by a parallel cutting edge portion. 
     
     
         3 . The reciprocating saw blade of  claim 2 , wherein the parallel cutting edge portion has a third length that is less than the first length and greater than the second length. 
     
     
         4 . The reciprocating saw blade of  claim 1 , wherein tips of teeth in the inclined cutting edge portion are arranged generally along a straight line extending from the first tooth to the second tooth. 
     
     
         5 . The reciprocating saw blade of  claim 1 , wherein tips of teeth in the inclined cutting edge portion are arranged generally along a curve extending from the first tooth to the second tooth. 
     
     
         6 . The reciprocating saw blade of  claim 1 , wherein the declined cutting edge portion includes at least one intermediate tooth between the third tooth and the first tooth. 
     
     
         7 . The reciprocating saw blade of  claim 6 , wherein the at least one intermediate tooth comprises at least one bump tooth having a tooth height less than a tooth height of the third tooth. 
     
     
         8 . The reciprocating saw blade of  claim 6 , wherein the at least one intermediate tooth comprises a bump tooth that has a configuration different from the third tooth. 
     
     
         9 . The reciprocating saw blade of  claim 6 , wherein the at least one intermediate tooth has a size that is substantially similar to a size of the third tooth. 
     
     
         10 . The reciprocating saw blade of  claim 1 , wherein the tang includes a hole and the first tooth is located a horizontal distance from the hole, the horizontal distance approximately 34% to 53% of a length of the blade. 
     
     
         11 . A reciprocating saw blade comprising:
 an elongated blade body extending along a blade axis and having a rear end, a front end, a cutting edge having a plurality of teeth and extending between the rear end and the front end, and a non-cutting edge opposite the cutting edge and extending between the rear end and the front end; and   a tang coupled to the rear end and configured to be received in a blade holder of a powered reciprocating saw,   wherein the cutting edge includes (a) an inclined cutting edge portion extending away from the blade axis and toward the front end from a first tooth to a second tooth closer to the front end than the first tooth, the first tooth having a first tip at a first vertical distance from the horizontal line, and the second tooth having a second tip at a second vertical distance from the horizontal line that is greater than the first vertical distance; and (b) a declined cutting edge portion extending toward the blade axis and toward the front end from a third tooth to the first tooth, the first tooth closer to the front end than the third tooth, and the third tooth having a third tip at a third vertical distance from the horizontal line that is greater than the first vertical distance,   wherein the inclined cutting edge portion has a first length from the first tooth to the second tooth, the declined cutting edge portion has a second length from the third tooth to the first tooth, the first length greater than the second length, and   wherein the declined cutting edge portion includes at least one intermediate tooth between the third tooth and the first tooth.   
     
     
         12 . The reciprocating saw blade of  claim 11 , wherein the at least one intermediate tooth comprises at least one bump tooth having a tooth height less than a tooth height of the third tooth. 
     
     
         13 . The reciprocating saw blade of  claim 11 , wherein the at least one intermediate tooth has a configuration different from the third tooth. 
     
     
         14 . The reciprocating saw blade of  claim 11 , wherein the at least one intermediate tooth has a size that is substantially similar to a size of the third tooth. 
     
     
         15 . The reciprocating saw blade of  claim 11 , wherein tips of teeth in the inclined cutting edge portion are arranged generally along a straight line extending from the first tooth to the second tooth. 
     
     
         16 . The reciprocating saw blade of  claim 11 , wherein tips of teeth in the inclined cutting edge portion are arranged generally along a curve extending from the first tooth to the second tooth. 
     
     
         17 . The reciprocating saw blade of  claim 11 , wherein the tang includes a hole and the first tooth is located a horizontal distance from the hole, the horizontal distance approximately 34% to 53% of a length of the blade. 
     
     
         18 . A reciprocating saw blade comprising:
 an elongated blade body extending along a blade axis and having a rear end, a front end, a cutting edge having a plurality of teeth and extending between the rear end and the front end, and a non-cutting edge opposite the cutting edge and extending between the rear end and the front end; and   a tang defining a hole, coupled to the rear end, and configured to be received in a blade holder of a powered reciprocating saw,   wherein the cutting edge includes (a) an inclined cutting edge portion extending away from the blade axis and toward the front end from a first tooth to a second tooth closer to the front end than the first tooth, the first tooth having a first tip at a first vertical distance from the horizontal line, and the second tooth having a second tip at a second vertical distance from the horizontal line that is greater than the first vertical distance; and (b) a declined cutting edge portion extending toward the blade axis and toward the front end from a third tooth to the first tooth, the first tooth closer to the front end than the third tooth, and the third tooth having a third tip at a third vertical distance from the horizontal line that is greater than the first vertical distance and substantially equal to the second vertical distance,   wherein the inclined cutting edge portion has a first length from the first tooth to the second tooth, the declined cutting edge portion has a second length from the third tooth to the first tooth, the first length greater than the second length, and   wherein the first tooth is located a horizontal distance from the hole, the horizontal distance approximately 34% to 53% of a length of the blade.   
     
     
         19 . The reciprocating saw blade of  claim 18 , wherein tips of teeth in the inclined cutting edge portion are arranged generally along a straight line extending from the first tooth to the second tooth. 
     
     
         20 . The reciprocating saw blade of  claim 18 , wherein tips of teeth in the inclined cutting edge portion are arranged generally along a curve extending from the first tooth to the second tooth.