Saw blade

• US 6,276,249 B1
• Filed: 12/04/1998
• Issued: 08/21/2001
• Est. Priority Date: 04/04/1997
• Status: Expired due to Term

• Current Assignee: J.N. Eberle & Cie GmbH (Greiffenberger Holding GmbH)
• Original Assignee: Handschuh & Scheider GmbH
• Inventors: Handschuh, Herbert, Schweizer, Albert, Gehrmann, Hilmar
• Primary Examiner(s): Rachuba, M.
• Application Number:
  US09/194,923
• Time in Patent Office: 991 Days
• Field of Search: 838/51, 838/46, 838/48, 838/54
• US Class Current: 83/851
• 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 83/9346 Uniformly varying teeth or tooth spacing
• CPC Class Codes: Y10T 83/935 Plural tooth groups
• CPC Class Codes: Y10T 83/9358 Series of dissimilar teeth
• CPC Class Codes: Y10T 83/9365 Teeth having cutting edge parallel to blade surface

Abstract

The saw blade has a base body on which are mounted uncrossed teeth with cutting edges. The teeth are combined to form successive groups of at least three teeth and are disposed symmetrically to the longitudinal center plane of the base body. The teeth of one group increase in height from tooth to tooth while simultaneously decreasing in width.

Claims

1. A saw blade comprising a base body having a longitudinal central plane, and a plurality of uncrossed teeth each having a tooth front on which a cutting edge is disposed, and a tooth back, said teeth being combined into successive groups of at least three teeth and disposed symmetrically to the longitudinal center plane of the base body, wherein the teeth of a group increase in height from tooth to tooth in a direction from the tooth front to the tooth back while simultaneously decreasing in width from tooth to tooth in the direction from the tooth front to the tooth back.

2. A saw blade according to claim 1, wherein the teeth have a variable spacing between successive teeth.

3. A saw blade according to claim 1, wherein each group respectively comprises a variable number of teeth.

4. A saw blade according to claim 1, wherein the blade cuts in a cutting direction and defines a vertical direction perpendicular to the cutting direction, and each of the teeth has a cutting angle (α

) from the vertical direction, provided in a range extending towards the cutting direction from the vertical direction.

5. A saw blade according to claim 4, wherein the cutting angle (α

) varies between respective teeth within a tooth group.

6. A saw blade according to claim 1, wherein the teeth have a horizontal top surface and a pair of angled surfaces which are angled relative to the horizontal top surface by phase angles (δ

) in the range between 5° and

60°

.

7. A saw blade according to claim 6, wherein the phase angles (δ

) vary between respective teeth within at least one of the tooth groups.

8. A saw blade according to claim 1, wherein the teeth each comprise a back side having a cutting divider.

9. A saw blade according to claim 1, wherein the teeth each comprise a front side having a roof tooth.

10. A saw blade according to claim 1, wherein the teeth each comprise a cutting guide stage.