Reciprocating saw blade for a machine tool

Patent metadata

Field	Value
Publication number	US-12121986-B2
Application number	US-202117528698-A
Country	US
Kind code	B2
Filing date	Nov 17, 2021
Priority date	Feb 24, 2017
Publication date	Oct 22, 2024
Grant date	Oct 22, 2024

Abstract

A reciprocating saw blade for a machine tool, in particular a jigsaw blade, includes a first row of saw teeth and a second row of saw teeth. The first and second rows of saw teeth are arranged at an angle to a longitudinal axis of the reciprocating saw blade. The angle of the first row of saw teeth opposes the angle of the second row of saw teeth. The reciprocating saw blade also includes a further row of saw teeth arranged between the first and second rows of saw teeth. The further row of saw teeth is set back, in particular suddenly set back, towards the longitudinal axis in relation to the first and second rows of saw teeth.

First claim

The invention claimed is:

1. A reciprocating saw blade for a power tool, comprising:
a first row of saw teeth, the first row of saw teeth defining a first angle with respect to a longitudinal axis of the reciprocating saw blade;
a second row of saw teeth, the second row of saw teeth defining a second angle with respect to the longitudinal axis, the first angle of the first row of saw teeth oriented oppositely to the second angle of the second row of saw teeth; and
a further row of saw teeth arranged longitudinally between the first and second rows of saw teeth,
wherein the further row of saw teeth is set back toward the longitudinal axis relative to the first and second rows of saw teeth such that a first tooth of the further row of saw teeth that is adjacent to the first row is set back toward the longitudinal axis from a longitudinal extension of a first profile of tooth tips of the first row of saw teeth, and a second tooth of the further row of saw teeth that is adjacent to the second row is set back toward the longitudinal axis from a longitudinal extension of a second profile of tooth tips of the second row of saw teeth, and
wherein the set back of the first tooth and/or the set back of the second tooth is between 1% and 20% relative to a maximum width of the saw blade defined transversely to the longitudinal axis and parallel to a lateral face of the saw blade, wherein the further row of saw teeth is arranged on a straight line.

2. The reciprocating saw blade as claimed in claim 1 , wherein the set back of the first tooth and/or the set back of the second tooth is between 3% and 16.5% relative to the width of the saw blade.

3. The reciprocating saw blade as claimed in claim 1 , wherein the first and second rows of saw teeth are each arranged on a straight line.

4. The reciprocating saw blade as claimed in claim 1 , wherein the further row of saw teeth has a first set of saw teeth that face in a first direction so as to cut in the first direction, and a second set of saw teeth that face in a second opposite direction so as to cut in the second opposite direction.

5. The reciprocating saw blade as claimed in claim 1 , wherein the saw teeth of the first and second rows of saw teeth are arranged with mirror symmetry in relation to a plane of symmetry that is normal to the longitudinal axis of the reciprocating saw blade and that intersects the further row of saw teeth in its longitudinal center.

6. The reciprocating saw blade as claimed in claim 1 , wherein the longitudinal extent of the second row of saw teeth is greater than or equal to the longitudinal extent of the first row of saw teeth.

7. A reciprocating saw blade for a power tool, comprising:
a first row of saw teeth, the first row of saw teeth defining a first angle with respect to a longitudinal axis of the reciprocating saw blade;
a second row of saw teeth, the second row of saw teeth defining a second angle with respect to the longitudinal axis, the first angle of the first row of saw teeth oriented oppositely to the second angle of the second row of saw teeth; and
a further row of saw teeth arranged longitudinally between the first and second rows of saw teeth,
wherein the further row of saw teeth is set back toward the longitudinal axis relative to the first and second rows of saw teeth such that a first tooth of the further row of saw teeth that is adjacent to the first row is set back toward the longitudinal axis from a longitudinal extension of a first profile of tooth tips of the first row of saw teeth, and a second tooth of the further row of saw teeth that is adjacent to the second row is set back toward the longitudinal axis from a longitudinal extension of a second profile of tooth tips of the second row of saw teeth, and
wherein the set back of the first tooth and/or the set back of the second tooth is between 10% and 35% of a pitch of teeth of one or more of the first row of saw teeth, the second row of saw teeth, and the further row of saw teeth.

8. The reciprocating saw blade as claimed in claim 7 , wherein the further row of saw teeth is arranged on a straight line and/or the first and second rows of saw teeth are each arranged on a respective straight line.

9. The reciprocating saw blade as claimed in claim 8 , wherein the straight line on which the further row of saw teeth is arranged is parallel to the longitudinal axis.

10. The reciprocating saw blade as claimed in claim 7 , wherein the further row of saw teeth has a first set of saw teeth that face in a first direction so as to cut in the first direction, and a second set of saw teeth that face in a second opposite direction so as to cut in the second opposite direction.

11. The reciprocating saw blade as claimed in claim 7 , wherein the saw teeth of the first and second rows of saw teeth are arranged with mirror symmetry in relation to a plane of symmetry that is normal to the longitudinal axis of the reciprocating saw blade and that intersects the further row of saw teeth in its longitudinal center.

12. The reciprocating saw blade as claimed in claim 7 , wherein the longitudinal extent of the second row of saw teeth is greater than or equal to the longitudinal extent of the first row of saw teeth.

13. The reciprocating saw blade as claimed in claim 7 , wherein the longitudinal extent of the first row of saw teeth or the second row of saw teeth is 15% to 450% greater than the longitudinal extent of the further row of saw teeth.

14. The reciprocating saw blade as claimed in claim 7 , wherein the set back of the first tooth and/or the set back of the second tooth is 25% of the pitch of the teeth of the one or more of the first row of saw teeth, the second row of saw teeth, and the further row of saw teeth.

15. The reciprocating saw blade as claimed in claim 7 , wherein the saw teeth of the one or more of the first row of saw teeth, the second row of saw teeth, and the further row of saw teeth have no offset.

16. The reciprocating saw blade as claimed in claim 7 , wherein the saw teeth of the one or more of the first row of saw teeth, the second row of saw teeth, and the further row of saw teeth have an offset.

17. The reciprocating saw blade as claimed in claim 7 , wherein a third profile of tooth tips of the further row of saw teeth is discontinuous from the first and second profiles at the respective first and second teeth.

18. A reciprocating saw, comprising:
a reciprocating saw blade that includes:
a first row of saw teeth, the first row of saw teeth defining a first angle with respect to a longitudinal axis of the reciprocating saw blade,
a second row of saw teeth, the second row of saw teeth defining a second angle with respect to the longitudinal axis, the first angle of the first row of saw teeth oriented oppositely to the second angle of the second row of saw teeth, and
a further row of saw teeth arranged longitudinally between the first and second rows of saw teeth,

wherein the further row of saw teeth is set back toward the longitudinal axis relative to the first and second rows of saw teeth such that a first tooth of the further row of saw teeth that is adjacent to the first row is set back toward the longitudinal axis from a longitudinal extension of a first profile of tooth tips of the first row of saw teeth, and a second tooth of the further row of saw teeth that is adjacent to the second row is set back toward the longitudinal axis from a longitudinal extension of a second profile of tooth tips of the second row of saw teeth, and
wherein the set back of the first tooth and/or the set back of the second t

Assignees

• Bosch Gmbh Robert

Inventors

• Kocher Martin
• Karlen Urs
• Brantschen Damian
• Grolimund Daniel

Classifications

• B23D61/1217 Primary

  Reciprocating blades having more than one section of unique teeth on one side, e.g. a fine tooth section and a large tooth section · CPC title

• B23D61/128

  Sabre saw blades · CPC title

• B23D61/121 Primary

  Types of set; Variable teeth, e.g. variable in height or gullet depth; Varying pitch; Details of gullet · CPC title