Saw blade

• US 7,806,033 B2
• Filed: 11/02/2001
• Issued: 10/05/2010
• Est. Priority Date: 12/20/2000
• Status: Active Grant

• Current Assignee: Scintilla AG (Robert Bosch GmbH)
• Original Assignee: Scintilla AG (Robert Bosch GmbH)
• Inventors: Kocher, Martin, Karlen, Urs, Grolimund, Daniel
• Primary Examiner(s): PRONE, JASON D
• Application Number:
  US10/204,374
• Publication Number:
  US 20030051593A1
• Time in Patent Office: 3,259 Days
• Field of Search: 838/35, 838/38, 83846-848, 838/51, D8/20, 30392-394
• 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 61/128 Sabre saw blades
• CPC Class Codes: Y10T 83/9319 Toothed blade or tooth therefor
• CPC Class Codes: Y10T 83/9346 Uniformly varying teeth or tooth spacing
• CPC Class Codes: Y10T 83/9348 Undulating tooth arrangement
• CPC Class Codes: Y10T 83/935 Plural tooth groups
• CPC Class Codes: Y10T 83/9353 Including raker tooth group
• CPC Class Codes: Y10T 83/9358 Series of dissimilar teeth

Abstract

A sabre saw blade, in particular for metal applications, with a serration that has at least one first tooth spacing and one second tooth spacing, characterized in that in at least a partial region with three first and three second tooth spacings which are always disposed in a directly alternating sequence, the serration has at least two tooth shapes, and at least one tooth is embodied as a roof-shaped tooth having a first tooth back portion with a first clearance angle and a second tooth back portion with a second clearance angle with said tooth back portions being arranged at an obtuse angle and one behind the other in a cutting movement direction, and at least one tooth is embodied as a standard tooth with a straight tooth back, arranged alternatingly, wherein the first tooth spacing is between 10% and 30% shorter and the second tooth spacing is between 10% and 30% wider than 1.81 mm.

Claims

1. A sabre saw blade, in particular for metal applications, with a serration (14) that has at least one first tooth spacing (16) and one second tooth spacing (18), characterized in that in at least a partial region with three successive tooth spacings (16, 18), the first and second tooth spacings (16, 18) are always disposed in a directly alternating sequence, the serration (14) has at least two tooth shapes, and at least one tooth is embodied as a roof-shaped tooth (20) having a first tooth back portion with a first clearance angle and a second tooth back portion with a second clearance angle with said tooth back portions being arranged at an obtuse angle and one behind the other in a cutting movement direction, and at least one tooth is embodied as a standard tooth (22) with a straight tooth back, arranged alternatingly, wherein the first tooth spacing is between 10% and 30% shorter and the second tooth spacing is between 10% and 30% wider than 1.81 mm.

2. The sabre saw blade according to claim 1, characterized in that in a direction counter to a cutting movement direction (24), in the partial region each second tooth spacing (18) is followed by the roof-shaped tooth (20) and each first tooth spacing (16) is followed by the standard tooth (22).

3. The sabre saw blade according to claim 1, wherein the serration has at least three units, each unit consisting of the roof-shaped tooth and the standard tooth, wherein in each of the units the roof-shaped tooth is arranged before the standard tooth counter to a cutting direction, wherein a first one of the three units is deflected transversely to the cutting movement direction, a second one of the three units which adjoins the first unit is deflected in an opposite direction to the first unit, and a third one of the three units which adjoins the second unit is not deflected.

4. The sabre saw blade according to claim 1, wherein within the partial region the roof-shaped teeth are deflected lateral to the cutting movement direction, and the standard teeth are undeflected.

5. The sabre saw blade according to claim 1, wherein an average of the first and the second tooth spacing essentially corresponds to a tooth spacing of 1.81 mm.

6. The sabre saw blade according to claim 1, characterized in that one standard tooth and one roof-shaped tooth are deflected together as a unit lateral to a cutting movement direction (24).

7. The sabre saw blade according to claim 6, characterized in that a roof-shaped tooth (20) is disposed in front of the standard tooth (22) in a direction counter to a cutting movement direction (24).

8. The sabre saw blade according to claim 6, wherein two units deflected in opposite direction are followed by an undeflected unit.