Patent ID: 7036415

Claim:
A band saw blade, comprising: at least a first left set tooth ( 27 ) which is bent along a first bending line extending in a moving direction (V) of the band saw blade to cut a workpiece; at least one unset tooth ( 25 ) which is located prior to the first left set tooth ( 27 ) so that the unset tooth ( 25 ) cuts the workpiece prior to that the first left set tooth ( 27 ) cuts the workpiece when the band saw blade is moved in the moving direction (V); at least a second right set tooth ( 29 ) which is bent along a second bending line extending in the moving direction; at least a third left set tooth ( 31 ) which is bent along a third bending line extending in the moving direction; at least a fourth right set tooth ( 35 ) which is bent along a fourth bending line extending in the moving direction; at least a fifth left set tooth ( 37 ) which is bent along a fifth bending line extending in the moving direction; and at least a sixth right set tooth ( 39 ) which is bent along a sixth bending line extending in the moving direction; wherein the band saw blade further comprises at least an additional unset tooth ( 33 ) which is located between the third left set tooth ( 31 ) and the fourth right set tooth ( 35 ); wherein the band saw blade is formed with a sequence of the unset tooth ( 25 ), the first left set tooth ( 27 ), the second right set tooth ( 29 ), the third left set tooth ( 31 ), the additional unset tooth ( 33 ), fourth right set tooth ( 35 ), the fifth left set tooth ( 37 ) and the sixth right set tooth ( 39 ); wherein the pitch (P 8 ) in the moving direction (V) between the unset tooth ( 25 ) and the first left set tooth ( 27 ) is larger than the other pitch (P 7 ) in the moving direction (V) between the first left set tooth ( 27 ) and the second right set tooth ( 29 ) and larger than the other pitch (P 6 ) in the moving direction (V) between the second right set tooth ( 29 ) and the third left set tooth ( 31 ); wherein respective lengths of the first bending line, the second bending line, the third bending line and the fourth bending line are the same; wherein a straight imaginary line which is drawn by connecting tip ends of all the first to the sixth set teeth ( 25 , 27 , 29 , 31 , 33 , 35 , 37 , 39 ) is parallel to the moving direction; wherein said first bending line, said second bending line, said third bending line and said fourth bending line are collinear with a single baseline(j—j), and wherein bottoms of gullets between the teeth are disposed below the single baseline (j).