Saw blade for a saw machine especially an oscillating saw machine

• US 6,244,152 B1
• Filed: 10/08/1998
• Issued: 06/12/2001
• Est. Priority Date: 11/21/1997
• Status: Expired due to Fees

• Current Assignee: Scintilla AG (Robert Bosch GmbH)
• Original Assignee: Scintilla AG (Robert Bosch GmbH)
• Inventors: Di Nicolantonio, Aldo
• Primary Examiner(s): RACHUBA, MAURINA T
• Application Number:
  US09/168,509
• Time in Patent Office: 978 Days
• Field of Search: 838/35, 838/37, 838/46--55
• US Class Current: 83/835
• 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: 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 83/935 Plural tooth groups
• CPC Class Codes: Y10T 83/9365 Teeth having cutting edge parallel to blade surface

Abstract

The saw blade (30) for an oscillating saw machine has a row of M-shaped twin teeth (38) on its toothed edge (40). Each twin tooth has two tooth tips pointing in opposite directions so as to be effective for sawing in two opposite saw blade motion directions. Each twin tooth is alternately twisted about a central twist axis in one rotation direction or another opposite rotation direction out from the saw blade plane so that the tooth tips of each twisted twin tooth point in opposite directions out from the saw blade plane.

Claims

1. A saw blade for a saw machine, wherein said saw blade (30) comprises a plurality of M-shaped twin teeth (38) arranged in succession along a toothed edge (40) of the saw blade, wherein each of said twin teeth has two tooth tips pointing in opposite directions so as to be effective for sawing in two opposite saw blade motion directions and each of said twin teeth is alternately twisted about a central twist axis in one rotation direction or another opposite rotation direction out from a saw blade plane so that said tooth tips of each of said twisted twin teeth point in opposite directions out of the saw blade plane.

2. The saw blade as defined in claim 1, wherein said twin teeth have equal dimensions.

3. The saw blade as defined in claim 1, that is elongated or straight.

4. The saw blade as defined in claim 1, comprising a circular saw blade.

5. The saw blade as defined in claim 1, wherein each of said twin teeth goes over into an adjacent one of the twin teeth by a concave contour.

6. The saw blade as defined in claim 1, comprising a bimetal or trimetal blade.