Saw blade
First Claim
Patent Images
1. A blade for a circular saw, comprising:
- a body of a generally circular shape, said body having a preselected blade thickness, said body having a peripheral surface having a preselected shape, said peripheral surface having a plurality of cutting teeth connected thereto for cutting in a cutting direction, said blade having a center arbor bore therethrough, said blade having an imaginary blade center point, said blade having at least three and not more than four identical J-shaped expansion slots therein, said J-shape expansion slots having an equal spacing therebetween about said peripheral surface, each said J-shaped expansion slot having a preselected opening width, said opening width being at least equal to said blade thickness, each said J-shaped expansion slot having a radial portion and an arcuate portion, said radial portion extending radially inward from said peripheral surface toward said imaginary blade center point for a preselected distance to a closest radial location, said arcuate portion starting at said closest radial location and arcing in said cutting direction, said arcuate portion having a preselected radius and an imaginary arc center point, said imaginary arc center point having a blade location between said peripheral surface and said arcuate portion and in said cutting direction from said radial portion, said arcuate portion having a J-shaped expansion slot closest location to said imaginary blade center point.
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Accused Products
Abstract
A circular saw blade with improved stability, the blade having a plurality of radial expansion slots, preferably having a "J"-shape. The blades may also have a plurality of arced body slots and may be coated with a "TEFLON" paint mixture.
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Citations
13 Claims
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1. A blade for a circular saw, comprising:
- a body of a generally circular shape, said body having a preselected blade thickness, said body having a peripheral surface having a preselected shape, said peripheral surface having a plurality of cutting teeth connected thereto for cutting in a cutting direction, said blade having a center arbor bore therethrough, said blade having an imaginary blade center point, said blade having at least three and not more than four identical J-shaped expansion slots therein, said J-shape expansion slots having an equal spacing therebetween about said peripheral surface, each said J-shaped expansion slot having a preselected opening width, said opening width being at least equal to said blade thickness, each said J-shaped expansion slot having a radial portion and an arcuate portion, said radial portion extending radially inward from said peripheral surface toward said imaginary blade center point for a preselected distance to a closest radial location, said arcuate portion starting at said closest radial location and arcing in said cutting direction, said arcuate portion having a preselected radius and an imaginary arc center point, said imaginary arc center point having a blade location between said peripheral surface and said arcuate portion and in said cutting direction from said radial portion, said arcuate portion having a J-shaped expansion slot closest location to said imaginary blade center point.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
Specification