US Patent No. 10,335,867

HOLE CUTTER WITH MULTIPLE FULCRUMS


Patent No. 10,335,867
Issue Date July 02, 2019
Title Hole Cutter With Multiple Fulcrums
Inventorship Joseph Thomas Novak, East Longmeadow, MA (US)
Matthew Christopher Green, Amherst, MA (US)
Assignee

Claim of US Patent No. 10,335,867

1. A hole cutter comprising:a substantially cylindrical blade body defining a cutting edge and a longitudinal axis; and
at least one axially-elongated aperture formed through the blade body and spaced from the cutting edge such that a portion of the blade body extends between the cutting edge and the axially-elongated aperture, the at least one axially-elongated aperture bounded by a bottom edge axially spaced adjacent to the cutting edge, a top edge spaced further away from the cutting edge than the bottom edge, and a side edge connecting the bottom edge to the top edge and oriented at an acute angle to the longitudinal axis of the blade body;
wherein the axially-elongated aperture is configured to receive therethrough a lever for removing a work piece slug from an interior of the blade body, and the blade body defines within the axially-elongated aperture a plurality of fulcrums configured for engaging the lever and for levering the slug out of the interior of the blade body by applying a sufficient levering force against the fulcrums to lever the slug towards the cutting edge, the plurality of fulcrums including a first fulcrum axially spaced adjacent to the cutting edge and a second fulcrum axially spaced further away from the cutting edge than the first fulcrum.