BLADE FOR A RECIPROCATING SAW

• US 20130228059A1
• Filed: 03/01/2013
• Published: 09/05/2013
• Est. Priority Date: 03/01/2012
• Status: Active Grant

• Current Assignee: Milwaukee Electric Tool Corporation (Techtronic Industries Company Limited)
• Original Assignee: Milwaukee Electric Tool Corporation (Techtronic Industries Company Limited)
• Inventors: Kazda, Austin J., Malloy, Ryan J., Butzen, Robert W., Schulz, Andrew J., Neitzell, Roger D., McCool, Courtney D.
• Granted Patent: US 9,643,267 B2
• Time in Patent Office: Days
• US Class Current: 83/835
• CPC Class Codes: B23D 61/121 Types of set; Variable teeth, e.g. variable in height or gullet depth; Varying pitch; Details of gullet
• CPC Class Codes: B23D 61/123 Details of saw blade body
• CPC Class Codes: B23D 61/128 Sabre saw blades
• CPC Class Codes: Y10T 83/9319 Toothed blade or tooth therefor
• CPC Class Codes: Y10T 83/9454 Reciprocable type

Abstract

A blade for use with a reciprocating saw includes an attachment portion configured to couple to the reciprocating saw and a body extending from the attachment portion. The body includes a first portion, a tip portion, a second portion extending from the first portion to the tip portion, and a cutting edge. The second portion has a height less than a height of the first portion. The blade also includes a blunt tip formed at a distal end of the tip portion and a plurality of gullets formed in the second portion. At least one of the gullets has a generally trapezoidal shape.

Claims

1. A blade for use with a reciprocating saw, the blade comprising:

an attachment portion configured to couple to the reciprocating saw;

a body extending from the attachment portion and including a first portion, a tip portion, a second portion extending from the first portion to the tip portion, and a cutting edge, wherein the second portion has a height less than a height of the first portion;

a blunt tip formed at a distal end of the tip portion; and

a plurality of gullets formed in the second portion, at least one of the gullets having a generally trapezoidal shape.

2. The blade of claim 1, wherein at least one of the gullets is spaced from an adjacent gullet by the cutting edge.

3. The blade of claim 1, wherein the cutting edge is substantially flat.

4. The blade of claim 1, wherein the cutting edge extends across the first portion and the second portion of the blade.

5. The blade of claim 4, wherein the first portion is substantially toothless.

6. The blade of claim 1, wherein the plurality of gullets includes an upper gullet formed in an upper surface of the second portion and a lower gullet formed in a lower surface of the second portion.

7. The blade of claim 6, wherein the upper gullet and the lower gullet are substantially aligned in a direction parallel to the cutting edge.

8. The blade of claim 6, wherein the upper gullet and the lower gullet are offset from one another in a direction parallel to the cutting edge.

9. The blade of claim 1, wherein at least one of the plurality of gullets includes two rounded corners, the two rounded corners including a radius between about 0.01 and about 0.04 inches.

10. The blade of claim 1, wherein the plurality of gullets include a gullet depth between about 0.035 and about 0.080 inches.

11. The blade of claim 1, wherein the tip portion includes a tip length between about 0.062 inches and about 0.3 inches.

12. The blade of claim 1, wherein the tip portion includes a tip length between about 0.3 inches and about 0.38 inches.

13. The blade of claim 1, wherein the height of the first portion is between about 0.625 inches and about 1.0 inches, measured substantially perpendicular to the cutting edge.

14. The blade of claim 1, wherein the height of the second portion is between about 0.18 inches and about 0.25 inches, measured substantially perpendicular to the cutting edge.

15. The blade of claim 1, wherein the tip portion includes a tip height between about 0.062 inches and about 0.125 inches measured substantially perpendicular to the cutting edge.

16. The blade of claim 1, wherein the tip portion includes a tip height between about 0.18 inches and about 0.25 inches measured substantially perpendicular to the cutting edge.

17. The blade of claim 1, wherein the blade includes an overall length between about 2.4 inches and about 3.25 inches, measured substantially parallel to the cutting edge from a proximal edge of the attachment portion to the blunt tip.

18. The blade of claim 1, wherein the blunt tip includes a beveled portion.

19. A blade for use with a reciprocating saw, the blade comprising:

an attachment portion configured to couple to the reciprocating saw;

a body extending from the attachment portion and including a first portion, a tip portion, and a second portion extending from the first portion to the tip portion, wherein the second portion has a height less than a height of the first portion;

a blunt tip formed at a distal end of the tip portion; and

a plurality of teeth arranged along the second portion, at least one of the teeth including a tooth length defining a cutting edge of the blade,

wherein the tooth length is between about 0.125 inches and about 0.325 inches.

20. The blade of claim 19, wherein the tooth length is about 0.2 inches.

21. The blade of claim 19, wherein the tooth length is about 0.26 inches.

22. The blade of claim 19, wherein the plurality of teeth includes an upper tooth and a lower tooth.

23. The blade of claim 22, wherein the upper tooth and the lower tooth are substantially aligned in a direction substantially parallel to the cutting edge.

24. The blade of claim 22, wherein the upper tooth and the lower tooth are offset from one another in a direction substantially parallel to the cutting edge.

25. The blade of claim 19, at least one of the plurality of teeth includes a tooth height of about 0.062 inches, measured substantially perpendicular to the cutting edge.

26. The blade of claim 19, wherein at least one of the plurality of teeth defines a first angle between about 45 degrees and about 85 degrees, measured between the cutting edge and a front edge of the at least one tooth, and wherein the at least one tooth defines a second angle between about 45 degrees and about 85 degrees, measured between the cutting edge and a rear edge of the at least one tooth.

27. The blade of claim 26, wherein the first angle is about 65 degrees and the second angle is about 65 degrees.

28. The blade of claim 19, wherein the blade includes an overall length of about 2.5 inches, measured parallel to the cutting edge from a proximal edge of the attachment portion to the blunt tip.

29. A blade for use with a reciprocating saw, the blade comprising:

an attachment portion configured to couple to the reciprocating saw;

a body extending from the attachment portion and including a first portion, a tip portion, and a second portion extending from the first portion to the tip portion, wherein the second portion has a height less than a height of the first portion; and

a plurality of gullets formed in the second portion, at least one of the gullets spaced from an adjacent gullet by a substantially flat toothless cutting edge.

30. The blade of claim 29, wherein the plurality of gullets includes an upper gullet formed in an upper surface of the second portion and a lower gullet formed in a lower surface of the second portion.

31. The blade of claim 30, wherein the upper gullet and the lower gullet are substantially aligned in a direction substantially parallel to the cutting edge.

32. The blade of claim 30, wherein the upper gullet and the lower gullet are offset from one another in a direction substantially parallel to the cutting edge.

33. The blade of claim 29, wherein at least one of the plurality of gullets includes two rounded corners, the two rounded corners including a radius between about 0.01 and about 0.04 inches.

34. The blade of claim 29, wherein at least one of the plurality of gullets includes a gullet depth between about 0.035 and about 0.080 inches.

35. The blade of claim 29, wherein the height of the first portion is between about 0.625 inches and about 1.0 inches, measured substantially perpendicular to the cutting edge.

36. The blade of claim 29, wherein the height of the second portion is between about 0.18 inches and about 0.25 inches, measured substantially perpendicular to the cutting edge.

37. The blade of claim 29, wherein the tip portion includes a tip height between about 0.062 inches and about 0.125 inches, measured substantially perpendicular to the cutting edge.

38. The blade of claim 29, wherein the tip portion includes a tip height between about 0.18 inches and about 0.25 inches, measured substantially perpendicular to the cutting edge.

39. The blade of claim 29, wherein the blade includes an overall length between about 2.4 inches and about 3.5 inches, measured substantially parallel to the cutting edge from a proximal edge of the attachment portion to the blunt tip.

40. The blade of claim 29, wherein the cutting edge extends across the first portion and the second portion.

41. The blade of claim 40, wherein the first portion is substantially toothless.

42. The blade of claim 29, wherein the length of the substantially flat toothless cutting edge between adjacent gullets is between about 0.125 inches and about 0.325 inches.