Patent ID: 9579732
Date: 2017-02-28
CPC Classifications: B23B,Y10T

Claim:
1. A hole saw comprising: a cylindrical body disposed along an axis of rotation with a side wall extending axially from a cap end to a cutting end, the cutting end including a plurality of cutting teeth; and a cap including a rim portion seated on the cap end and an axially extending portion extending into the cylindrical body from the cap end; wherein the side wall defines an aperture comprising: wherein the first slot portion includes an upper wall and a lower wall, each oriented substantially perpendicular to the axis, the lower wall of the first slot portion being closer to the cutting end; and wherein the aperture has a first side and a second side, the first side including the first wall, the second wall, and the upper wall, the second side being non-linear and generally matching a contour of the first side, the second side including a bump curved toward the first side and a radial wall that provides a smooth transition from the first wall of the second slot portion to the bump with no undercut.