Method of treating a hole saw to provide efficient slug removal

Details Method of treating a hole saw to provide efficient slug removal Method of treating a hole saw to provide efficient slug removal

2010-01-08

2010-10-26

Gates, Eric A (Department: 3726)

Metal working

Method of mechanical manufacture

Assembling or joining

C408S068000, C408S206000, C408S703000, C427S384000, C427S388100

Reexamination Certificate

active

07818867

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. The inside surface, outside surface and cutting surface of the saw cup are given a low friction treatment. A fluoropolymer resin coating is used for the low friction treatment. The friction treatment is applied by spraying thereof on the saw cup. The saw cup is then heated to a predetermined temperature for a set period of time. The low friction treatment is cured when the saw cup is used. The shank portion is attached to a closed end of the saw cup with any suitable fastening process. The shank portion preferably retains the pilot cutting device.

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