Hole saw having efficient slug removal

Details Hole saw having efficient slug removal Hole saw having efficient slug removal

2009-01-20

2010-02-09

Gates, Eric A (Department: 3726)

Cutting by use of rotating axially moving tool

Tool or tool with support

Having axial, core-receiving central portion

C408S068000, C408S206000, C408S703000

Reexamination Certificate

active

07658576

ABSTRACT:
A hole saw having efficient slug removal preferably includes a saw cup, a shank portion and a pilot cutting device. A cutting surface is formed on an open end of the saw cup. An inside surface of the saw cup is given a low friction treatment and preferably an outside surface thereof. The shank portion is retained on a closed end of the saw cup. The pilot cutting device is preferably a drill, but other cutting devices may also be used. A second embodiment of a hole saw having efficient slug removal preferably includes a saw cup, a shank portion and a pilot cutting device. The saw cup includes a prior art saw cup, at least two side openings and a cutting surface. The at least two side openings are formed through the prior art saw cup to remove a substantial portion of a side wall.

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