Recip blade
AssigneeBlack & Decker Inc.
InventorsMatthew C. Green, Stephen A. Hampton, William B. Korb
Life of this patent
Estimating the term…
Abstract
A recip blade has a cutting edge defining a cutting direction and a repeating pattern of cutting teeth. Each repeating pattern includes (i) a leading tooth with respect to the cutting direction that includes a rake face defining a first rake angle that is negative, and (ii) a trailing tooth following the leading tooth with respect to the cutting direction that includes a rake face defining a second rake angle that is less negative than the first rake angle.
Claims20
A reciprocating saw blade comprising:
- a blade body;
- and
- a cutting edge provided along one edge of the blade body and defining a cutting direction, the cutting edge comprising a repeating pattern of cutting teeth, wherein each repeating pattern comprises:
- a leading tooth with respect to the cutting direction, the leading tooth comprising:
- a first tooth tip defining a first tooth height;
- and
- a first rake face defining a first negative rake angle;
- and
- a first trailing tooth following the leading tooth with respect to the cutting direction, the first trailing tooth comprising:
- a second tooth tip defining a second tooth height that is less than the first tooth height;
- and
- a second rake face defining a second rake angle that is greater than the first rake angle.
A reciprocating saw blade comprising:
- a blade body;
- and
- a cutting edge provided along one edge of the blade body and defining a cutting direction, the cutting edge comprising a repeating pattern of cutting teeth with a number of teeth per inch being 12 teeth per inch or greater, wherein each repeating pattern comprises:
- a leading tooth with respect to the cutting direction, the leading tooth comprising:
- a first tooth tip defining a first tooth height;
- a first rake face defining a first rake angle, wherein the first rake angle is a negative angle;
- and
- a first primary clearance surface extending from the first tooth tip and a first included angle between the first rake face and the first primary clearance surface;
- a trailing tooth following the leading tooth with respect to the cutting direction, the trailing tooth comprising:
- a second tooth tip defining a second tooth height;
- a second rake face defining a second rake angle that is greater than the first rake angle;
- and
- a second primary clearance surface extending from the second tooth tip and a second included angle between the second rake face and the second primary clearance surface, wherein the second included angle is less than the first included angle.
A reciprocating saw blade for cutting a metal work piece comprising:
- a blade body;
- a cutting edge provided along one edge of the blade body and defining a cutting direction, the cutting edge comprising a first repeating pattern of cutting teeth, wherein the first repeating pattern of cutting teeth comprises:
- a leading tooth comprising:
- a first tooth tip defining a first tooth height;
- and
- a first rake means for enhancing the life of the blade;
- at least one trailing tooth following the leading tooth with respect to the cutting direction, the at least one trailing cutting tooth comprising:
- a second tooth tip defining a second tooth height that is less than the first tooth height;
- and
- a second rake means for reducing the size of any burrs generated in cutting the metal work piece.
Dependencies are inferred from the claim text.