Accessories for oscillating power tools

Patent metadata

Field	Value
Publication number	US-11925993-B2
Application number	US-202117158877-A
Country	US
Kind code	B2
Filing date	Jan 26, 2021
Priority date	Jan 27, 2020
Publication date	Mar 12, 2024
Grant date	Mar 12, 2024

Abstract

An accessory for an oscillating power tool includes an attachment portion configured to be coupled to an oscillating power tool and a working portion coupled to the attachment portion and extending generally along a longitudinal axis. The working portion has a generally planar wedge shape bounded at least partially by a rear non-cutting end with a first width, a front cutting edge opposite the rear edge with a second width that is greater than the first width, a first side cutting edge extending from a first end of the rear end to a first end of the front cutting edge at a first angle to the longitudinal axis, and a second side cutting edge opposite the first side cutting edge and extending from a second end of the rear end to a second end of the front cutting edge at a second angle to the longitudinal axis.

First claim

What is claimed is:

1. An accessory comprising:
an attachment portion configured to be coupled to an oscillating power tool;
a working portion coupled to the attachment portion and extending generally along a longitudinal axis, the working portion having a planar wedge shaped body bounded at least partially by a non-cutting rear end with a first width, a front cutting edge opposite the rear end with a second width that is greater than the first width, a first side cutting edge extending from a first end of the rear end to a first end of the front cutting edge at a first angle to the longitudinal axis, and a second side cutting edge opposite the first side cutting edge and extending from a second end of the rear end to a second end of the front cutting edge at a second angle to the longitudinal axis, wherein the front cutting edge includes a straight central portion and first and second convex curved lateral portions continuous with and extending laterally outward from the central portion, the central portion having a third width that is at least half of the second width.

2. The accessory of claim 1 , wherein the first cutting edge has a first plurality teeth and the first and second side cutting edges each have a second plurality of teeth.

3. The accessory of claim 2 , wherein the first plurality of teeth are configured differently than the second plurality of teeth.

4. The accessory of claim 3 , wherein the first plurality of teeth has a first tooth pitch and the second plurality of teeth has a second tooth pitch that is different than the first tooth pitch.

5. The accessory of claim 1 , wherein the working portion is symmetrical about the longitudinal axis.

6. The accessory of claim 1 , wherein the first angle is approximately equal to the second angle.

7. The accessory of claim 1 , wherein the working portion is configured to cut an opening for receiving at least one of a gang box, an electrical outlet, and an electrical switch, the second width approximately equal to a width of the opening for receiving at least one of the gang box, the electrical outline, or the electrical switch.

8. The accessory of claim 7 , wherein the second width is approximately 1.75 inches to approximately 2.25 inches.

9. The accessory of claim 8 , wherein the first angle and the second angle each are approximately 4° to approximately 31°.

10. The accessory of claim 9 , wherein the working portion has a length along the longitudinal axis from the rear end to the front cutting edge of approximately 1.25 inches to approximately 2 inches.

11. The accessory of claim 1 , wherein the attachment portion and the working portion are connected by an intermediate portion, such that the working portion lies in a plane that is offset from a plane in which the attachment portion lies.

12. The accessory of claim 1 , wherein the first cutting edge is disposed on a front cutting body that is coupled to a front end of the wedge shaped body, the front cutting body formed of a harder material than the wedge shaped body.

13. The accessory of claim 12 , wherein the front cutting body includes teeth formed of at least one of high speed steel or carbide.

14. The accessory of claim 1 , wherein the third width is approximately equal to or greater than the first width.

15. An accessory comprising:
an attachment portion configured to be coupled to an oscillating power tool;
a working portion coupled to the attachment portion and extending generally along a longitudinal axis, the working portion having a planar wedge shaped body bounded at least partially by a non-cutting rear end with a first width, a front cutting edge opposite the rear end with a second width that is greater than the first width, a first side cutting edge extending from a first end of the rear end to a first end of the front cutting edge at a first angle to the longitudinal axis, and a second side cutting edge opposite the first side cutting edge and extending from a second end of the rear end to a second end of the front cutting edge at a second angle to the longitudinal axis, wherein the front cutting edge has a straight center portion and first and second convex curved lateral portions continuous with and extending laterally outward from the center portion, the central portion having a third width that is greater than a sum of a fourth width of the first convex curved lateral portion and a fifth width of the second convex curved lateral portion.

16. The accessory of claim 15 , wherein the third width is approximately equal to the first width.

17. The accessory of claim 15 , wherein the first cutting edge has a first plurality teeth and the first and second side cutting edges each have a second plurality of teeth.

18. The accessory of claim 17 , wherein the first plurality of teeth are configured differently than the second plurality of teeth.

19. The accessory of claim 15 , wherein the first cutting edge is disposed on a front cutting body that is coupled to a front end of the wedge shaped body, the front cutting body formed of a harder material than the wedge shaped body.

Assignees

• Black & Decker Inc

Inventors

• Reist Andrew
• Green Matthew Christopher
• Savarino Matthew
• Howe Kevin M

Classifications

• B23D61/006 Primary

  Oscillating saw blades · CPC title

• B23D49/11

  for special purposes, e.g. offset-blade hand; {Hand saws having spaced blades; Hand saws for sawing grooves or square holes} · CPC title

• B23D51/10

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

• B25F3/00

  Associations of tools for different working operations with one portable power-drive means; Adapters therefor · CPC title