Recip blade

Patent metadata

Field	Value
Publication number	US-9833851-B2
Application number	US-201414316532-A
Country	US
Kind code	B2
Filing date	Jun 26, 2014
Priority date	Jun 27, 2013
Publication date	Dec 5, 2017
Grant date	Dec 5, 2017

Abstract

A recip blade has a blade body including a cutting edge and a tang located at one end of the blade body. The tang defines an arcuate cross-sectional shape or is laminated to increase the overall thickness of the tang and, in turn, enhance the rigidity of the blade and/or reduce oscillation or whipping of the blade during cutting.

First claim

What is claimed is:

1. A recip blade, comprising:
a substantially planar blade body comprising:
a first upper edge;
a first lower edge;
a first width extending from the first upper edge to the first lower edge; and
a cutting edge provided along at least a portion of the first lower edge;

a tang located at one end of the blade body, wherein the tang comprises:
a second upper edge;
a second lower edge;
a second width extending from the second upper edge to the second lower edge;
a length;
a thickness; and
a tang aperture extending through the tang for coupling the tang to a reciprocating saw, wherein the tang defines a single, bow-shaped arcuate cross-sectional shape extending continuously throughout substantially the second width and the second length of the tang;

a tang stem comprising a third width that is less than the second width of the tang, the tang stem being located on an opposite side of the tang relative to the blade body and extending out from the tang;
wherein the first width is disposed adjacent to the tang and is greater than the second width; and
wherein the arcuate cross sectional shape of the tang transitions from the arcuate shape to a substantially planar shape adjacent to a junction of the tang and the blade body.

2. A recip blade as defined in claim 1 , wherein the arcuate cross-sectional shape extends through the length of the tang and through the junction of the tang and the blade body.

3. A recip blade as defined in claim 2 , wherein the arcuate cross-sectional shape extends the length of the tang and through the junction of the tang and the blade body, and wherein the arcuate cross-sectional shape transitions from the arcuate shape to substantially planar shape in a portion of the blade body adjacent to the tang.

4. A recip blade as defined in claim 2 , wherein the arcuate cross-sectional shape transitions from the arcuate shape to the substantially planar shape in a portion of the blade body within about ⅓ of an inch from the junction of the tang and the blade body.

5. A recip blade as defined in claim 2 , wherein the arcuate cross-sectional shape transitions from the arcuate shape to the substantially planar shape in a portion of the blade body within about ¼ of an inch from the junction of the tang and the blade body.

6. A recip blade as defined in claim 1 , wherein the arcuate cross-sectional shape transitions from the arcuate shape to the substantially planar shape at the junction of the tang and the blade body.

7. A recip blade as defined in claim 1 , wherein the arcuate cross-sectional shape extends continuously throughout the tang stem.

Assignees

• Irwin Ind Tool Co

Inventors

• Green Matthew C

Classifications

• B23D61/125 Primary

  Composite body, e.g. laminated · CPC title

• B23D61/12

  Straight saw blades; Strap saw blades · CPC title

• B23D51/10

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

• B23D61/128

  Sabre saw blades · CPC title

• B26B9/02

  characterised by the shape of the cutting edge, e.g. wavy · CPC title