Patent ID: 8366356

Claim:
An arbor for a hole cutter including an outer surface defining a threaded aperture, and a drive member aperture spaced radially relative to the threaded aperture, the arbor comprising: an axially-elongated arbor body including a drive shank on one end thereof, a threaded portion on an opposite end thereof relative to the drive shank that is engageable with the threaded aperture on the hole cutter, and an inner axially-extending bearing surface located between the drive shank and the threaded portion, wherein the arbor body defines a first width along the inner axially-extending bearing surface; an axially-elongated collar including a proximal end and a distal end, a manually engageable surface extending axially between the proximal and distal ends and defining a reduced width in comparison to the proximal and distal ends, and a drive member extending axially from the distal end of the collar, wherein the collar is slidably mounted on the arbor body and movable between (i) an engaged position with the distal end of the collar adjacent to the threaded portion for engaging the drive member with the drive member aperture of a hole cutter threadedly attached to the threaded portion of the arbor body, and (ii) a disengaged position with the distal end of the collar axially spaced relative to the threaded portion of the arbor body, wherein the collar includes an outer axially-extending bearing surface that slidably contacts the inner axially-extending bearing surface of the arbor when moving the collar between the engaged and disengaged positions, and the inner axially-extending bearing surface defines a length that is at least about 1¼ times the first width of the arbor body; and a retaining member mounted on the collar and movable between (i) a first position holding the collar in the engaged position, and (ii) a second position allowing axial movement of the collar from the engaged position to the disengaged position.