SAW BLADE

• US 20080264231A1
• Filed: 04/25/2007
• Published: 10/30/2008
• Est. Priority Date: 04/25/2007
• Status: Abandoned Application

• Current Assignee: Black & Decker Incorporated (Stanley Black & Decker, Inc.)
• Original Assignee: Black & Decker Incorporated (Stanley Black & Decker, Inc.)
• Inventors: Davidson, Craig, Murphy, Martin, Gillanders, Matthew, Coe, Andrew, Hall, Ken, Walton, Barry
• Application Number:
  US11/739,932
• Publication Number:
  US 20080264231A1
• Time in Patent Office: Days
• US Class Current: 83/835
• CPC Class Codes: B23D 61/04 with inserted saw teeth the teeth being individually inserted
• CPC Class Codes: B23D 65/00 Making tools for sawing machines or sawing devices for use in cutting any kind of material
• CPC Class Codes: Y10T 83/9319 Toothed blade or tooth therefor

Abstract

A saw blade comprises a plate having a plurality of teeth. Each of the teeth includes a tip where the tip has a smooth curved surface welded to the plate. The tip comprises a solid piece of hard material and has a generally rounded wedge shape. A method of forming a saw blade having cutting tips welded to the plate is also provided.

Claims

1. A saw blade comprising:

a plate having a plurality of teeth;

each of said teeth including a tip, said tip having a rounded wedge shape and

having a smooth curved surface welded to said plate; and

a cutting edge formed in the tip.

2. A tip for attachment to a saw blade comprising:

a solid piece of hard material formed to have a rounded wedge shape.

3. The tip of claim 2 having a first side face disposed substantially parallel to a second side face, said first and second side faces having an enlarged bottom portion which is formed as a smooth curved surface.

4. The tip of claim 3 further including a tapered portion extending from the enlarged bottom portion.

5. The tip of claim 3 wherein two flat faces extend from the enlarged bottom portion, said two flat face portions extend toward one another as they extend from said enlarged bottom portion.

6. The tip of claim 2 wherein said tip is symmetrical about its longitudinal axis for at least a portion of its length.

7. The tip of claim 2 wherein the tip is tungsten carbide.

8. A method of forming a saw blade comprising:

providing a plate having pockets formed therein;

providing a tip having a generally rounded wedge shape; and

welding the tip to the plate.

9. The method of claim 8 wherein said tip has first and second faces and an enlarged bottom portion.

10. The method of claim 9 wherein said tip further includes a tapered portion extending from the enlarged bottom portion.

11. The method of claim 8 wherein said tip is symmetrical about its longitudinal axis for at least a portion of its length.

12. The method of claim 11 contacting the tip with an electrode in said portion.

13. The method of claim 8 locating a tip in each of said pockets such that said enlarged portion contacts said pocket.

14. The method of claim 8 grinding the tip to a finished shape.

15. The method of claim 8 grinding a sharp cutting edge on the tip.

16. A saw blade comprising:

a plate;

a plurality of teeth formed on said plate, said teeth including a tooth support defining a pocket;

a tip welded in said pocket.

17. The saw blade of claim 16 wherein said tip has an enlarged bottom portion which is formed as a smooth curved surface and a tapered portion extending from the enlarged bottom portion.

18. The saw blade of claim 17 wherein the tapered portion includes a leading face and a trailing face that extend toward one another as they extend away from the enlarged bottom portion.

19. The saw blade of claim 17 wherein the tapered portion extends to a rounded point.

20. The saw blade of claim 17 wherein the tapered portion extends to a truncated face.