US 11,998,996 B2
Hole cutting accessory for power tool
Poinon Z. Sanogo, Enfield, CT (US); Matthew Christopher Green, Amherst, MA (US); Kenneth Hall, East Longmeadow, MA (US); Joseph T. Novak, East Longmeadow, MA (US); and Andrew Reist, Springfield, MA (US)
Assigned to BLACK & DECKER INC., New Britain, CT (US)
Filed by Black & Decker Inc., New Britain, CT (US)
Filed on Mar. 11, 2022, as Appl. No. 17/654,493.
Claims priority of provisional application 63/263,113, filed on Oct. 27, 2021.
Claims priority of provisional application 63/200,652, filed on Mar. 19, 2021.
Prior Publication US 2022/0297205 A1, Sep. 22, 2022
Int. Cl. B23B 51/04 (2006.01)
CPC B23B 51/0426 (2013.01) [B23B 51/0473 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A quick change hole cutting accessory, including:
an arbor moveable without use of an external tool among a first configuration, a second configuration, and a third configuration, the arbor including:
a shaft portion extending along an axis;
a sleeve movably coupled to the shaft portion;
a plurality of recesses defined in one of the shaft portion or the sleeve; and
a detent coupled to the other of the shaft portion or the sleeve and configured to selectively engage the plurality of recesses upon movement of the sleeve relative to the shaft portion;
an annular hole saw configured to be releasably coupled to the arbor; and
a pilot drill bit configured to be releasably coupled to the arbor,
wherein
in a first position of the sleeve relative to the shaft portion corresponding to the first configuration of the arbor, the detent engages a first recess of the plurality of recesses, and both the hole saw and the pilot drill bit are fixedly coupled to the arbor;
in a second position of the sleeve relative to the shaft portion corresponding to the second configuration of the arbor, the detent engages a second recess of the plurality of recesses, and one of the hole saw or the pilot drill bit is releasable from the arbor while the other of the hole saw or the pilot drill bit remains fixedly coupled to the arbor; and
in a third position of the sleeve relative to the shaft portion corresponding to the third configuration of the arbor, the detent engages a third recess of the plurality of recesses, and the other of the hole saw or the pilot drill bit is releasable from the arbor.