Saw blade

• US 5,603,252 A
• Filed: 08/28/1995
• Issued: 02/18/1997
• Est. Priority Date: 08/28/1995
• Status: Expired due to Fees

• Current Assignee: Kapman AB (Snap-On Incorporated)
• Original Assignee: Sandvik AB
• Inventors: Hayden, Robert C. Sr.
• Primary Examiner(s): Peterson, Kenneth E.
• Assistant Examiner(s): PRYOR, SEAN AUGUSTUS
• Application Number:
  US08/519,942
• Time in Patent Office: 540 Days
• Field of Search: 83/846, 83/851, 83/835, 83/852, 93/850
• US Class Current: 83/851
• CPC Class Codes: B23D 61/021 Types of set; Variable teeth, e.g. variable in height or gullet depth: Varying pitch; Details of gullet
• 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: Y10T 83/9319 Toothed blade or tooth therefor
• CPC Class Codes: Y10T 83/9358 Series of dissimilar teeth

Abstract

A saw blade is provided with recurring groups of teeth. Each group of teeth includes one straight tooth, an even number of high set teeth, and an even number of low set teeth. Distances from all of the teeth in the group to a corresponding, immediately preceding teeth are different for all of the teeth. Distances from all of the teeth in the group to a preceding tooth of the same height are different for each tooth. Distances from all of the set teeth in the group to the nearest preceding set tooth with the same set are different for each set tooth. No high teeth are immediately adjacent.

Claims

1. A saw blade, comprising:

a plurality of recurring groups of teeth, each tooth having a point;

each group comprising

one high straight tooth without set,

an even number of high set teeth with points at a first level, half of the high set teeth being set to the right and half to the left,

an even number, greater than the number of high set teeth, of low set teeth with points at a second level lower than the first level, half of the low set teeth being set to the right and half to the left,

points of each tooth in the group being at a different distance from a point of a corresponding, immediately preceding tooth than a distance between a point of any other tooth in the group and a point of a corresponding, immediately preceding tooth,

all set teeth in the group having the same amount of set, and

no high tooth being immediately preceded by another high tooth, there being an odd number of low teeth between a high straight tooth and a high set tooth, and there being an even number of low teeth between two set high teeth, distances from a point of any tooth in the group to a point of a preceding tooth of the same height being different for all teeth in the group, distances from a point of any set tooth in the group to a point of a preceding set tooth of the same set being different for all set teeth in the group.

2. The saw blade according to claim 1, wherein each group includes one high straight tooth, two high set teeth, and four low set teeth.

3. The saw blade according to claim 1, wherein rake angles for each tooth are the same.

4. The saw blade according to claim 1, wherein relief angles for each tooth are the same.

5. The saw blade according to claim 4, wherein rake angles for each tooth are the same.

6. The saw blade according to claim 1, wherein gullets are formed between adjacent teeth, each of the gullets having a radiused bottom, radii at the bottom of the gullets all being different from one another.

7. The saw blade according to claim 1, wherein gullets are formed between adjacent teeth, each of the gullets having a gullet height from a bottom of the gullet to a point of a corresponding tooth, the gullet heights all being different from one another.

8. The saw blade according to claim 1, wherein each recurring group of teeth includes seven teeth.

9. A saw blade, comprising:

a plurality of recurring groups of teeth, each group of teeth including an unset high tooth, an even number of high set teeth with points at a first level, half of the high set teeth being set to the right and half to the left, an even number, greater than the number of high set teeth, of low set teeth with points at a second level lower than the first level, half of the low set teeth being set to the right and half to the left,

a distance from any tooth to a preceding tooth in the group of the same height being different than a distance from any other tooth to a preceding tooth in the group of the same height, and

a distance from any tooth to a preceding tooth in the group being different than a distance from any other tooth to a preceding tooth in the group,

wherein there is an odd number of low set teeth between the high unset tooth and a high set tooth.

10. The saw blade according to claim 9, wherein distance from any tooth to a preceding tooth in the group of the same set are different.

11. The saw blade according to claim 9, wherein each group includes one high straight tooth, two high set teeth, and four low set teeth.

12. The saw blade according to claim 9, wherein there are an even number of low set teeth between any two high set teeth.

13. The saw blade according to claim 9, wherein gullets are formed between adjacent teeth, each of the gullets having a gullet height from a bottom of the gullet to a point of a corresponding tooth, the gullet heights for each gullet within the group all being different from one another.

14. The saw blade according to claim 9, wherein all of the high set teeth and all of the low set teeth have the same amount of set.

15. The saw blade according to claim 9, wherein rake angles for each tooth are the same.

16. The saw blade according to claim 9, wherein relief angles for each tooth are the same.

17. The saw blade according to claim 16, wherein rake angles for each tooth are the same.

18. The saw blade according to claim 9, wherein gullets are formed between adjacent teeth, each of the gullets having a radiused bottom, radii at the bottom of the gullets all being different from one another.