Saw blade

• US 20060207398A1
• Filed: 07/08/2004
• Published: 09/21/2006
• Est. Priority Date: 07/08/2003
• Status: Abandoned Application

• Current Assignee: C4 Carbides Limited
• Original Assignee: C4 Carbides Limited
• Inventors: Nicolson, Peter John, Duggan, Paul Edward
• Application Number:
  US10/563,600
• Publication Number:
  US 20060207398A1
• Time in Patent Office: Days
• US Class Current: 83/13
• CPC Class Codes: B23D 61/04 with inserted saw teeth the teeth being individually inserted
• CPC Class Codes: B23D 61/14 with inserted saw teeth , i.e. 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 83/04 Processes
• CPC Class Codes: Y10T 83/9358 Series of dissimilar teeth
• CPC Class Codes: Y10T 83/9367 Teeth having cutting edge perpendicular to blade surface

Abstract

A saw blade has teeth grouped with varying shapes or other characteristics, such as composition. Each tooth has a root and a head separated by a transition region forming a neck. The roots may be oversize in relation to apertures or slots preformed in the strip, so that the teeth displace and deform the material of the strip, as they are forced into the position shown. They may then be fixed in position by brazing.

Claims

1. A saw blade comprising a relatively soft carrier supporting a plurality of relatively hard teeth, wherein the teeth are of differing characteristics.

2. A blade according to claim 1, wherein the teeth differ in shape.

3. A blade according to claim 1, wherein the teeth differ in composition.

4. A blade according to claim 1, wherein the pitch of the teeth along the carrier is constant.

5. A blade according to claim 1, wherein the pitch of the teeth varies along the carrier.

6. A blade according to claim 1, wherein the blade has a linear edge.

7. A blade according to claim 1, wherein the blade has a curved edge.

8. A blade according to claim 7, the blade edge being circular.

9. A method of making a saw blade, the method comprising fabricating a plurality of relatively hard teeth having differing characteristics, mounting the teeth at desired spaced mounting positions on a carrier of a relatively soft material and securing the teeth in their positions.

10. A method according to claim 9, wherein the teeth differ in shape.

11. A method according to claim 9, wherein the teeth differ in composition.

12. A method according to claim 9 wherein the mounting of the teeth in the carrier causes deformation and displacement of the material of the carrier.

13. A method according to claim 12, wherein deformation and displacement is achieved by forcing the teeth into apertures in the carrier.

14. A method according to claim 13, wherein the teeth have teeth roots with peripheries which form cutting edges to displace the material of the carrier as the inserts are forced into position.

15. A method according to claim 9, wherein the pitch of the teeth along the carrier is constant.

16. A method according to claim 9, wherein the pitch of the teeth varies along the carrier.

17. A method according to claim 9, wherein the blade has a linear edge.

18. A method according to claim 9, wherein the blade has a curved edge.

19. A method according to claim 18, wherein the blade edge is circular.

20. A plurality of hard teeth for attaching to a relatively soft common carrier of a saw blade, the teeth being of differing characteristics so that the resulting saw blade has teeth with different characteristics.

21. A plurality of teeth according to claim 20, wherein the teeth differ in shape.

22. A plurality of teeth according to claim 20, wherein the teeth differ in composition.

23. A tooth for a saw blade, the tooth having a root for attachment to a carrier of the blade and a head forming a cutting portion of the tooth when the latter is advanced in the cutting direction, the root and head being separated by a transition region which, when the tooth is viewed in side view transverse to the cutting direction, is in the shape of a neck as a consequence of having a width less than the maximum width of the root and less than the maximum width of the head.

24. A tooth according to claim 23, wherein the root has a periphery which is curvilinear in side view, the curvilinear edge being sufficiently sharp to enable the insert to be forced into the carrier from one side thereof.

25. A tooth according to claim 23, wherein the tooth is shaped to be forced into a pre-formed pilot slot or hole in the carrier with attendant displacement and deformation of the material of the carrier.

26. A saw blade comprising a carrier supporting a plurality of teeth each in accordance with claim 23.

28. A method of making a saw blade, in which relatively hard teeth in accordance with claim 23 are mounted on a relatively soft carrier.

27. (canceled)

29-31. -31. (canceled)