US 12,076,802 B2
Accessories for oscillating power tools
Asif Elliston, East Longmeadow, MA (US); Kevin Howe, Ludlow, MA (US); Kenneth Hall, East Longmeadow, MA (US); Stephen A Hampton, East Longmeadow, MA (US); Mark T. Cranna, Somers, CT (US); and Jared Theodore Strand, Wilbraham, MA (US)
Assigned to BLACK & DECKER INC., New Britain, CT (US)
Filed by BLACK & DECKER INC., New Britain, CT (US)
Filed on Jan. 18, 2022, as Appl. No. 17/648,190.
Claims priority of provisional application 63/140,581, filed on Jan. 22, 2021.
Prior Publication US 2022/0234124 A1, Jul. 28, 2022
Int. Cl. B23D 61/00 (2006.01); B27B 19/00 (2006.01); B25F 3/00 (2006.01)
CPC B23D 61/006 (2013.01) [B25F 3/00 (2013.01); B27B 19/006 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An accessory for use with oscillating power tools comprising:
an attachment portion configured to be coupled to the oscillating power tool; and
a working portion defining a rear end portion coupled to the attachment portion and extending along and arranged symmetrically about a tool axis, the working portion including a body bounded at least partially by a front cutting edge with a plurality of teeth opposite the rear end portion, a first lateral edge extending from a first end of the front cutting edge toward the rear end portion, and a second lateral edge opposite the first lateral edge and extending from the front cutting edge toward the rear end portion,
wherein the working portion is symmetrical about the tool axis at least half a length of the body extending from the rear end portion to the front cutting edge, the front cutting edge is arranged asymmetrically relative to the tool axis with a leading tooth disposed at one end of the cutting edge at a first distance from the rear end portion, a trailing tooth disposed on an opposite end of the cutting edge at a second distance from the rear end portion that is less than the first distance, and a plurality of intermediate teeth disposed between the leading tooth and the trailing tooth, each intermediate tooth disposed less than or equal to the first distance from the rear end portion and greater than or equal to the second distance from the rear end portion, and
wherein a first reference line connecting tips of the teeth on the cutting edge or tangent lines along a curve connecting tips of the teeth on the cutting edge is slanted at an acute angle to a second reference line that is perpendicular to the tool axis, wherein the acute angle is between 3° and 10°.