Accessory for a reciprocating power tool

Patent metadata

Field	Value
Publication number	US-9901960-B2
Application number	US-201313763206-A
Country	US
Kind code	B2
Filing date	Feb 8, 2013
Priority date	Feb 10, 2012
Publication date	Feb 27, 2018
Grant date	Feb 27, 2018

Abstract

An accessory configured for use with a reciprocating saw having a spindle. The accessory is configured to reciprocate with the spindle. The accessory includes an attachment portion having a tang including a first tang member and a second tang member and an aperture that extends through the attachment portion from a first broad side to a second broad side. The attachment portion also includes a first radius, which terminates to define a projection, located on a first narrow side. The attachment portion also includes a second radius, which terminates to define a projection, located on a second narrow side. The first radius and the second radius are configured to contact an exterior of the spindle.

First claim

What is claimed is:

1. A reciprocating saw comprising: a spindle;
a scraper blade configured for use with the reciprocating saw, the scraper blade configured to be coupled to the spindle to reciprocate with the spindle, the scraper blade including;
a first end configured to be received in the spindle of the reciprocating saw; a second end opposite the first end;
a cutting edge that defines the second end of the scraper blade and that is configured to engage a work surface, which generates a bending stress on the scraper blade when the reciprocating saw is operated;
a first broad side that extends between the first end and the second end; a second broad side facing opposite the first broad side, the second broad side extends between the first end and the second end;
a first narrow side that extends between the first and second broad sides and the first and second ends;
a second narrow side facing opposite the first narrow side, the second narrow side extends between the first and second broad sides and the first end and the second end;
an attachment portion adjacent the first end of the scraper blade, the attachment portion including,
a tang including a first tang projection and a second tang projection; an aperture that extends through the attachment portion from the first broad side to the second broad side,
a first radius located on the first narrow side and the first radius terminating to define a projection, the first radius contacts an exterior of the spindle, and
a second radius located on the second narrow side and the second radius terminating to define a projection, the second radius contacts the exterior of the spindle; a blade portion adjacent the second end of the scraper blade, the blade portion having a width, defined as the distance from the first narrow side to the second narrow side measured along the first broad side, that increases in a direction moving from the first end to the second end and towards the cutting edge;
a neck portion extending between the attachment portion and the blade portion, the neck portion including portions of the first narrow side and the second narrow side that are nonparallel such that the first narrow side and the second narrow side converge adjacent to the attachment portion and then subsequently the first narrow side and the second narrow side diverge toward the blade portion to define a second width that is wider than a third width measured from the projection defined by the first radius to the projection defined by the second radius;
wherein the first radius and the second radius transmit the bending stress from the scraper blade to the spindle to prevent breakage of the scraper blade.

2. The reciprocating saw of claim 1 , wherein the attachment portion further includes a generally U-shaped aperture disposed between the first and second tang projections, the U-shaped aperture extending from the first broad side to the second broad side and opening toward the first end of the scraper blade.

3. The reciprocating saw of claim 1 , wherein the cutting edge lies in a plane parallel to the first broad side and the second broad side.

4. The reciprocating saw of claim 1 , wherein in the cutting edge is a straight continuous edge that extends from the first narrow side to the second narrow side.

5. The reciprocating saw of claim 1 , wherein a width of the neck portion decreases linearly along the neck portion.

6. The reciprocating saw of claim 2 , wherein the aperture is disposed between the projections and the U-shaped aperture.

7. The reciprocating saw of claim 2 , wherein a diameter of the aperture is smaller than a distance from the first tang projection to the second tang projection between the U-shaped aperture.

8. The reciprocating saw of claim 1 , further including a slot that receives the tang and the aperture on an interior of the slot, and the projection of the first radius and the projection of the second radius are located outside of the slot.

9. The reciprocating saw of claim 1 , wherein the spindle includes a blade clamp that surrounds and engages the tang and aperture to secure the scraper blade to the spindle.

10. The reciprocating saw of claim 9 , wherein the projection defined by the first radius and the projection defined by the second radius are located outside of the blade clamp.

11. The reciprocating saw of claim 1 , wherein the spindle includes a blade clamp that receives only the tang and the aperture of the attachment portion.

12. The reciprocating saw of claim 1 , wherein the spindle includes a blade clamp that is substantially the same size as the tang.

Assignees

• Milwaukee Electric Tool Corp

Inventors

• Kehoe Sean T

Classifications

• B08B1/008 Primary

  Operations & Transport · mapped topic

• B23D61/00

  Tools for sawing machines or sawing devices (tools for trepanning B23B51/04); Clamping devices for these tools · CPC title

• B25D3/00

  Hand chisels · CPC title

• B23D61/123

  Details of saw blade body · CPC title

• B08B1/30 Primary

  by movement of cleaning members over a surface · CPC title