Saw blade with set cutting teeth

Patent metadata

Field	Value
Publication number	US-12145206-B2
Application number	US-202318487406-A
Country	US
Kind code	B2
Filing date	Oct 16, 2023
Priority date	Dec 5, 2018
Publication date	Nov 19, 2024
Grant date	Nov 19, 2024

Abstract

A saw blade includes an elongated body with a working edge extending along a longitudinal axis. A first strip composed of carbide or cermet and including at least one first full cutting tooth is coupled to a first portion of the working edge by a first weld fusion zone composed of a ductile material. The first strip is set in a first direction at a first angle out of a plane of the body by a first bend in the first weld fusion zone. A second strip composed of carbide or cermet and including at least one second full cutting tooth is coupled to a second portion of the working edge by a second weld fusion zone composed of a ductile material. The second strip is set in a second direction, opposite the first direction, at a second angle out of the plane of the body by a second bend in the second weld fusion zone.

First claim

What is claimed is:

1. A saw blade comprising:
an elongated body with a working edge extending along a longitudinal axis; and
a first strip composed of carbide or cermet and including at least one first full cutting tooth, the first strip coupled to a first portion of the working edge by a first weld fusion zone composed of a ductile material, the first strip set in a first direction at a first angle out of a plane of the body by a first bend in the first weld fusion zone; and
a second strip composed of carbide or cermet and including at least one second full cutting tooth, the second strip coupled to a second portion of the working edge by a second weld fusion zone composed of a ductile material, the second strip set in a second direction, opposite the first direction, at a second angle out of the plane of the body by a second bend in the second weld fusion zone.

2. The saw blade of claim 1 , wherein the first strip includes a first base portion coupled to the first weld fusion zone and at least two first full cutting teeth coupled to the first base portion.

3. The saw blade of claim 2 , wherein the second strip includes a second base portion coupled to the second weld fusion zone and at least two second full cutting teeth coupled to the second base portion.

4. The saw blade of claim 1 , wherein the at least one first full cutting tooth includes a first side face angled away from a vertical axis perpendicular to the longitudinal axis at a first side face angle.

5. The saw blade of claim 4 , wherein the at least one first full cutting tooth includes a second side face angled away from the vertical axis in direction opposite to the first side face at a second side face angle, such that each at least one first full cutting tooth has a parallelogram shape with a narrow end closer to the body and a wider end away from the body.

6. The saw blade of claim 5 , wherein the at least one second full cutting tooth includes a third side face angled away from a vertical axis perpendicular to the longitudinal axis at a third side face angle.

7. The saw blade of claim 6 , wherein the at least one second full cutting tooth includes a fourth side face angled away from the vertical axis in direction opposite to the third side face at a fourth side face angle, such that each at least one second full cutting tooth has a parallelogram shape with a narrow end closer to the body and a wider end away from the body.

8. The saw blade of claim 1 , further comprising a third strip composed of carbide or cermet and including at least one third full cutting tooth, the third strip coupled to a third portion of the working edge by a third weld fusion zone composed of a ductile material and, wherein the third strip is unset.

9. The saw blade of claim 1 , further comprising a space between the first strip and the second strip, the space being in a gullet between the at least one first full cutting tooth and the at least one second full cutting tooth.

10. The saw blade of claim 1 , wherein the saw blade is formed as one of a reciprocating saw blade, a jigsaw blade, a holesaw, or a bandsaw blade.

11. A method of manufacturing a saw blade comprising:
forming an elongated body with a working edge extending along a longitudinal axis; and
welding a first strip composed of carbide or cermet and including at least one first full cutting tooth to the working edge with a first weld fusion zone composed of a ductile material;
setting the first strip in a first direction at a first angle out of a plane of the body by forming a bend in the first weld fusion zone;
welding a second strip composed of carbide or cermet and including at least one second full cutting tooth to the working edge with a second weld fusion zone composed of a ductile material;
setting the second strip in a second direction, opposite the first direction, at a second angle out of the plane of the body by forming a second bend in the second weld fusion zone.

12. The method of manufacturing a saw blade of claim 11 , further comprising forming the first strip to include a first base portion and at least two first full cutting teeth coupled to the first base portion, and wherein welding the first strip comprises welding the first base portion to the working edge with the first weld fusion zone.

13. The method of manufacturing a saw blade of claim 12 , further comprising forming the second strip to include a second base portion and at least two second full cutting teeth coupled to the second base portion, and wherein welding the second strip comprises welding the second base portion to the working edge with the second weld fusion zone.

14. The method of manufacturing a saw blade of claim 11 , further comprising forming the at least one first full cutting tooth to have a first side face angled away from a vertical axis perpendicular to the longitudinal axis at a first side face angle.

15. The method of manufacturing a saw blade of claim 14 , further comprising forming the at least one first full cutting tooth to have a second side face angled away from the vertical axis in direction opposite to the first side face at a second side face angle, such that each at least one first full cutting tooth has a parallelogram shape with a narrow end closer to the body and a wider end away from the body.

16. The method of manufacturing a saw blade of claim 15 , further comprising forming the at least one second full cutting tooth to have a third side face angled away from a vertical axis perpendicular to the longitudinal axis at a third side face angle.

17. The method of manufacturing a saw blade of claim 16 , further comprising forming the at least one first full cutting tooth to have a fourth side face angled away from the vertical axis in direction opposite to the third side face at a fourth side face angle, such that each at least one second full cutting tooth has a parallelogram shape with a narrow end closer to the body and a wider end away from the body.

18. The method of manufacturing a saw blade of claim 11 , further comprising welding a third strip composed of carbide or cermet and including at least one third full cutting tooth to the working edge with a third weld fusion zone composed of a ductile material such that the third strip is unset.

19. The method of manufacturing a saw blade of claim 11 , further comprising welding the first strip and the second strip to the body so that there is a space between the first strip and the second strip, the space being in a gullet between the at least one first full cutting tooth and the at least one second full cutting tooth.

20. The method of manufacturing a saw blade of claim 11 , further comprising forming the body into one of a reciprocating saw blade, a jigsaw blade, a holesaw, or a bandsaw blade.

Assignees

• Black & Decker Inc

Inventors

• Sanogo Poinon
• Elliston Asif
• Green Matthew Christopher
• Fosberg Douglas
• Hampton Steve
• Sharifi Ashkan
• Novak Joseph T
• Langheld Kurt
• Korb William B

Classifications

• B23D61/122

  with inserted segments having more than one tooth · CPC title

• B23D61/023

  with inserted segments having more than one tooth · CPC title

• B23D61/121 Primary

  Types of set; Variable teeth, e.g. variable in height or gullet depth; Varying pitch; Details of gullet · CPC title