Saw blade

Patent metadata

Field	Value
Publication number	US-11413693-B2
Application number	US-201816611433-A
Country	US
Kind code	B2
Filing date	May 16, 2018
Priority date	May 16, 2017
Publication date	Aug 16, 2022
Grant date	Aug 16, 2022

Abstract

A saw blade includes a cutting portion having consecutive first, second, and third cutting teeth. Each cutting tooth includes a rake surface, a relief surface, and a tip. The first cutting tooth includes a protrusion extending from the relief surface of the first cutting tooth. The cutting portion includes a first gullet positioned between the first cutting tooth and the second cutting tooth and a second gullet sized differently than the first gullet positioned between the second cutting tooth and the third cutting tooth. The cutting portion includes a first pitch extending over the first gullet from the tip of the first cutting tooth to the tip of the second cutting tooth. The cutting portion includes a second pitch different than the first pitch extending over the second gullet from the tip of the second cutting tooth to the tip of the third cutting tooth.

First claim

The invention claimed is:

1. A saw blade for use with a power tool, the saw blade comprising;
a body defining a longitudinal axis;
an attachment portion coupled to the body, the attachment portion including a tang and an aperture configured to couple to the power tool; and
a cutting portion formed on the body, the cutting portion including consecutive first, second, and third cutting teeth, the first, second, and third cutting teeth each including a rake surface, a relief surface, and a tip positioned between the rake and relief surfaces, the first cutting tooth including a protrusion extending from an end of the relief surface of the first cutting tooth, the second cutting tooth does not include a protrusion on the relief surface of the second cutting tooth, the protrusion of the first cutting tooth including an apex defining an apex plane parallel to the longitudinal axis, the tip of the first cutting tooth and the end of the relief surface of the first cutting tooth positioned on opposite sides of the apex plane, the cutting portion including a first gullet positioned between the first cutting tooth and the second cutting tooth, the cutting portion including a second gullet sized smaller than the first gullet positioned between the second cutting tooth and the third cutting tooth, the protrusion of the first cutting tooth is configured to inhibit a nail from entering the first gullet and contacting the rake surface of the second cutting tooth during cutting operations;
wherein the cutting portion includes a first pitch extending over the first gullet from the tip of the first cutting tooth to the tip of the second cutting tooth, and wherein the cutting portion includes a second pitch less than the first pitch extending over the second gullet from the tip of the second cutting tooth to the tip of the third cutting tooth.

2. The saw blade of claim 1 , wherein the tips of the first, second, and third cutting teeth define a tip plane parallel to the longitudinal axis, and wherein the first gullet includes a first gullet depth measured from a base of the first gullet to the tip plane perpendicular to the tip plane, and wherein the second gullet includes a second gullet depth measured from a base of the second gullet to the tip plane perpendicular to the tip plane, and wherein the first gullet depth is greater than the second gullet depth.

3. The saw blade of claim 2 , wherein the first gullet depth is between 45% and 65% of the first pitch, and wherein the second gullet depth is between 45% and 65% of the second pitch.

4. The saw blade of claim 3 , wherein the first pitch equates to a pitch between 5 teeth per inch and 9 teeth per inch, and wherein the second pitch equates to a pitch between 9 teeth per inch and 13 teeth per inch.

5. The saw blade of claim 2 , wherein the third cutting tooth includes a protrusion extending from an end of the relief surface of the third cutting tooth.

6. The saw blade of claim 5 , wherein the protrusion of the third cutting tooth includes an apex, wherein the apexes of the protrusions of the first and third cutting teeth define the apex plane, and wherein the apex plane is spaced a distance, measured perpendicular to the longitudinal axis, from the base of the first gullet, and wherein a ratio of the distance over the first gullet depth is between 0.6 and 0.8.

7. The saw blade of claim 1 , wherein the third cutting tooth is formed on the body to include the same shape as the first cutting tooth.

8. A saw blade for use with a power tool, the saw blade comprising;
a body;
an attachment portion coupled to the body and configured to couple to the power tool; and
a cutting portion formed on the body, the cutting portion including consecutive first, second, and third cutting teeth, the first, second, and third cutting teeth each including a rake surface, a relief surface, and a tip positioned between the rake and relief surfaces, the first cutting tooth including a protrusion extending from an end of the relief surface of the first cutting tooth, the second cutting tooth does not include a protrusion on the relief surface of the second cutting tooth, the third cutting tooth including a protrusion extending from an end of the relief surface of the third cutting tooth, the protrusions of the first and third cutting teeth defining a first plane, the tip of the first cutting tooth and a portion of the relief surface of the first cutting tooth positioned on opposite sides of the first plane, the cutting portion including a first gullet positioned between the first cutting tooth and the second cutting tooth, the cutting portion including a second gullet positioned between the second cutting tooth and the third cutting tooth, the protrusion of the first cutting tooth is configured to inhibit a nail from entering the first gullet and contacting the rake surface of the second cutting tooth during cutting operations;
wherein the cutting portion includes a first pitch extending over the first gullet from the tip of the first cutting tooth to the tip of the second cutting tooth, and wherein the cutting portion includes a second pitch less than the first pitch extending over the second gullet from the tip of the second cutting tooth to the tip of the third cutting tooth.

9. The saw blade of claim 8 , wherein the tips of the first, second, and third cutting teeth define a tip plane parallel to the first plane, and wherein the first gullet includes a first gullet depth measured from a base of the first gullet to the tip plane perpendicular to the tip plane, and wherein the second gullet includes a second gullet depth measured from a base of the second gullet to the tip plane perpendicular to the tip plane, and wherein the first gullet depth is greater than the second gullet depth.

10. The saw blade of claim 9 , wherein the first gullet depth is between 45% and 65% of the first pitch, and wherein the second gullet depth is between 45% and 65% of the second pitch.

11. The saw blade of claim 10 , wherein the first pitch equates to a pitch between 5 teeth per inch and 9 teeth per inch, and wherein the second pitch equates to a pitch between 9 teeth per inch and 13 teeth per inch.

12. The saw blade of claim 9 , wherein the protrusions of the first and third cutting teeth include apexes defining the first plane, and wherein the first plane is spaced a distance, measured perpendicular to the first plane, from the base of the first gullet, and wherein a ratio of the distance over the first gullet depth is between 0.6 and 0.8.

13. The saw blade of claim 8 , wherein the third cutting tooth is formed on the body to include the same shape as the first cutting tooth.

14. A saw blade for use with a power tool, the saw blade comprising;
a body;
an attachment portion coupled to the body and configured to couple to the power tool; and
a cutting portion formed on the body, the cutting portion including consecutive first, second, and third cutting teeth, the first, second, and third cutting teeth each including a rake surface, a relief surface, and a tip positioned between the rake and relief surfaces, the first cutting tooth including a protrusion extending from an end of the relief surface of the first cutting tooth, the second cutting tooth does not include a protrusion on the relief surface of the second cutting tooth, the third cutting tooth including a protrusion extending from an end of the relief surface of the third cutting tooth, the protrusions of the first and third cutting teeth defining a first plane, the tip of the first cutting tooth and a portion of the relief surface of the first cutting tooth positioned on opposite sides of the first pl

Assignees

• Milwaukee Electric Tool Corp

Inventors

• Heath Peter R
• Ward Bryan C
• Rechlin Christopher J
• Kazda Austin J
• Lois Matthew B

Classifications

• B27B33/02 Primary

  Structural design of saw blades or saw teeth · CPC title

• B23D51/10

  for hand-held or hand-operated devices · CPC title

• B23D49/162

  Pad sawing devices · CPC title

• B23D61/123

  Details of saw blade body · 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