Variable tooth saw blade
First Claim
Patent Images
1. 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; and
a third group of cutting edges defining a third circumferential width as the distance between adjacent cutting edges in the third group;
the third circumferential width differing from the first and second circumferential widths.
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Accused Products
Abstract
An apparatus for cutting materials and more specifically an improved saw blade includes a plurality of variable teeth thereon. The variable tooth saw blade cuts faster and smoother while reducing harmonic vibrations. Specifically, the teeth on the saw blade are grouped into sections with differing circumferential widths and differing spacing between the sections.
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Citations
29 Claims
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1. A saw blade comprising:
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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; and
a third group of cutting edges defining a third circumferential width as the distance between adjacent cutting edges in the third group;
the third circumferential width differing from the first and second circumferential widths. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A saw blade comprising:
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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 five cutting edges including a first cutting edge and a last cutting edge defining therebetween a first group circumferential width of approximately fifty-six degrees;
a second group in each half having three cutting edges including a first cutting edge and a last cutting edge defining therebetween a second group circumferential width of approximately forty degrees;
a third group in each half having two cutting edges including a first cutting edge and a last cutting edge defining therebetween a third group circumferential width of approximately twenty-five degrees;
a first circumferential space being between the first and second groups in each half and having an approximately fourteen-degree circumferential width;
a second circumferential space being between the second and third groups in each half and having an approximately twenty-degree circumferential width; and
a third circumferential space being between the third group in each half and the first group in the respective other half and having an approximately twenty-five-degree circumferential width.
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28. A saw blade comprising:
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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 nine 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 seven cutting edges including a first cutting edge and a last cutting edge defining a second group circumferential width therebetween which is approximately thirty-six degrees;
a third group in each half having five cutting edges including a first cutting edge and a last cutting edge defining a second group circumferential width therebetween which is approximately thirty-six degrees;
a fourth group in each half having four cutting edges defining a second group circumferential width therebetween which is approximately forty-five degrees;
a first circumferential space being between the first and second groups in each half and having an approximately four-and-a-half-degree circumferential width;
a second circumferential space being between the second and third groups in each half and having an approximately six-degree circumferential width;
a third circumferential space being between the third and fourth groups in each half and having an approximately nine-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 seven-and-a-half-degree circumferential width.
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29. A saw blade comprising:
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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 twelve cutting edges including a first cutting edge and a last cutting edge defining a first group circumferential width therebetween which is approximately thirty-eight-and-a-half degrees;
a second group in each half having eight cutting edges including a first cutting edge and a last cutting edge defining a second group circumferential width therebetween which is approximately thirty-two-and-a-half degrees;
a third group in each half having twelve cutting edges including a first cutting edge and a last cutting edge defining a second group circumferential width therebetween which is approximately sixty-six degrees;
a fourth group in each half having three cutting edges defining a second group circumferential width therebetween which is approximately twenty-one-and-a-half degrees;
a first circumferential space being between the first and second groups in each half and having an approximately three-and-a-half-degree circumferential width;
a second circumferential space being between the second and third groups in each half and having an approximately four-and-a-half-degree circumferential width;
a third circumferential space being between the third and fourth groups in each half and having an approximately six-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 seven-and-a-half-degree circumferential width.
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Specification