Saw blade

Patent metadata

Field	Value
Publication number	US-11433467-B2
Application number	US-202117225308-A
Country	US
Kind code	B2
Filing date	Apr 8, 2021
Priority date	Apr 22, 2010
Publication date	Sep 6, 2022
Grant date	Sep 6, 2022

Abstract

A reciprocating saw blade includes a body defining a longitudinal axis. The blade includes a cutting portion having a plurality of cutting teeth. Each cutting tooth includes a protrusion and a tip spaced a first distance from the protrusion. The tip of a first cutting tooth is spaced a pitch distance from the tip of an adjacent second cutting tooth. A gullet is defined between the tip of the first cutting tooth and the protrusion of the adjacent second cutting tooth. The tip of a respective cutting tooth is spaced a tip height distance from a base of the gullet. An apex of the protrusion is spaced a protrusion height distance from the base of the gullet. The protrusion height distance is 65% to 68% of the tip height distance. The first distance is 40% to 77% of the pitch distance.

First claim

The invention claimed is:

1. A reciprocating saw blade for use with a reciprocating saw, the reciprocating saw blade comprising:
a body defining a longitudinal axis;
a cutting portion formed on the body, the cutting portion including
a plurality of cutting teeth, each cutting tooth including a tip and a protrusion, the tip of a respective cutting tooth spaced a first distance from the protrusion of the respective cutting tooth in a direction parallel to the longitudinal axis, the tip of a first cutting tooth spaced a pitch distance from the tip of an adjacent second cutting tooth, and
a gullet defined between the tip of the first cutting tooth and the protrusion of the adjacent second cutting tooth, the gullet including a base;

wherein the tip of a respective cutting tooth is spaced a tip height distance from the base of the gullet in a direction perpendicular to the longitudinal axis;
wherein an apex of the protrusion is spaced a protrusion height distance from the base of the gullet in a direction perpendicular to the longitudinal axis;
wherein the protrusion height distance is 65% to 68% of the tip height distance; and
wherein the first distance is 40% to 77% of the pitch distance.

2. The reciprocating saw blade of claim 1 , wherein the tip height distance is 0.1 inches.

3. The reciprocating saw blade of claim 1 , wherein each protrusion is a rounded protrusion.

4. The reciprocating saw blade of claim 1 , wherein
a protrusion of the first cutting tooth is spaced a gap distance from a tip of an adjacent third cutting tooth in a direction parallel to the longitudinal axis, and
the gap distance is greater than or equal to 0.07 inches and less than or equal to 0.08 inches.

5. The reciprocating saw blade of claim 1 , wherein the pitch distance is greater than or equal to 0.2 inches and less than or equal to 0.3 inches.

6. The reciprocating saw blade of claim 1 , further comprising an attachment portion coupled to the body, the attachment portion configured to couple to the reciprocating saw.

7. The reciprocating saw blade of claim 6 , wherein the tip of each cutting tooth is closer than the protrusion of the cutting tooth to the attachment portion.

8. The reciprocating saw blade of claim 6 , wherein the attachment portion includes a tang angled relative to the longitudinal axis.

9. The reciprocating saw blade of claim 1 ,
wherein a protrusion of the first cutting tooth is spaced a gap distance from a tip of an adjacent third cutting tooth in a direction parallel to the longitudinal axis; and
wherein a ratio of the first distance to the gap distance is at least 0.4 and no greater than 0.5.

10. The reciprocating saw blade of claim 1 , wherein
the first distance is greater than or equal to 32% of the tip height distance.

11. The reciprocating saw blade of claim 10 , wherein the first distance is less than or equal to 35% of the tip height distance.

12. The reciprocating saw blade of claim 1 ,
wherein the tips of the plurality of cutting teeth define a plane that is generally parallel to the longitudinal axis, and wherein the first distance and the gap distance are configured such that a standard framing nail engages a protrusion and no more than 20% of the standard framing nail protrudes beyond the plane toward the base of the gullet in a direction perpendicular to the longitudinal axis.

13. The reciprocating saw blade of claim 12 , wherein the reciprocating saw blade is configured to cut a work piece having the standard framing nail extending therethrough.

14. The reciprocating saw blade of claim 12 , wherein the protrusion is rounded and inhibits the standard framing nail from entering the gullet.

15. The reciprocating saw blade of claim 1 , wherein the gullet is further defined by a gullet surface between the first cutting tooth and the adjacent cutting tooth.

16. The reciprocating saw blade of claim 15 , wherein the gullet surface extends from the protrusion of the first cutting tooth to a rake face of the adjacent cutting tooth.

Assignees

• Milwaukee Electric Tool Corp

Inventors

• Butzen Robert W
• Kazda Austin J
• Schulz Andrew J

Classifications

• B23D61/1265

  Reciprocating blades with teeth on the saw nose, e.g. plunge cutters · CPC title

• Y10T83/9353

  Including raker tooth group · 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

• Y10T83/9319

  Toothed blade or tooth therefor · CPC title

• B23D61/123

  Details of saw blade body · CPC title