Variable tooth saw blade

A saw blade comprising:

• a flat, circular disc having a peripheral outer edge and a center hole;
• a plurality of circumferentially-spaced teeth each having a cutting edge and projecting radially outwardly from the peripheral outer edge;
• a first group of the cutting edges defining a first circumferential width between each adjacent pair of the cutting edges in the first group;
• a second group of the cutting edges defining a second circumferential width between each adjacent pair of the cutting edges in the second group;
• the second circumferential width differing from the first circumferential width;
• a third group of the cutting edges defining a third circumferential width between each adjacent pair of the cutting edges in the third group;
• the third circumferential width differing from the first and second circumferential widths;
• and
• a fourth group having at least one cutting edge defining a fourth circumferential width as one of the distance between adjacent cutting edges in the fourth group and, the distance between the at least one cutting edge in the fourth group and the adjacent cutting edge in the adjacent group;
• the fourth circumferential width differing from the first, second and third circumferential widths;
• wherein the number of cutting edges in adjacent groups alternates from odd to even.

A saw blade comprising:

• a flat, circular disc having a peripheral outer edge and a center hole;
• a plurality of circumferentially-spaced teeth each having a cutting edge and projecting radially outwardly from the peripheral outer edge;
• a first group of the cutting edges defining a first circumferential width between each adjacent pair of the cutting edges in the first group;
• a second group of the cutting edges defining a second circumferential width between each adjacent pair of the cutting edges in the second group, the second circumferential width differing from the first circumferential width;
• a third group of the cutting edges defining a third circumferential width between each adjacent pair of the cutting edges in the third group;
• the third circumferential width differing from the first and second circumferential widths;
• and
• a fourth group having at least one cutting edge defining a fourth circumferential width as one of the distance between adjacent cutting edges in the fourth group and, the distance between the at least one cutting edge in the fourth group and the adjacent cutting edge in the adjacent group;
• the fourth circumferential width differing from the first, second and third circumferential widths;
• wherein at least four circumferential spaces are provided respectively, one between the first and second groups, one between the second and third groups, one between the third and fourth groups, and one between the fourth and first groups, and wherein each of the circumferential spaces extends between adjacent cutting edges such that there are no cutting edges within the circumferential spaces.

A saw blade comprising:

• a flat, circular disc having a peripheral outer edge and a center hole, the disc being divided into a first half and a second half, each half being a copy exact of the other half positioned in a diametrically opposite manner;
• a plurality of circumferentially-spaced teeth each having a cutting edge and projecting radially outwardly from the peripheral outer edge;
• a first group in each half having seven cutting edges including a first cutting edge and a last cutting edge defining a first group circumferential width therebetween which is approximately thirty-six degrees;
• a second group in each half having six cutting edges including a first cutting edge and a last cutting edge defining a second group circumferential width therebetween which is approximately forty-five degrees;
• a third group in each half having three cutting edges including a first cutting edge and a last cutting edge defining a second group circumferential width therebetween which is approximately thirty degrees;
• a fourth group in each half having two cutting edges defining a second group circumferential width therebetween which is approximately twenty degrees;
• a first circumferential space being between the first and second groups in each half and having an approximately nine-degree circumferential width;
• a second circumferential space being between the second and third groups in each half and having an approximately ten-degree circumferential width;
• a third circumferential space being between the third and fourth groups in each half and having an approximately ten-degree circumferential width;
• and
• a fourth circumferential space being between the fourth group in each half and the first group in the respective other half and having an approximately twenty-degree circumferential width.