Cutting tool with chisel edge

Details Cutting tool with chisel edge Cutting tool with chisel edge

2008-03-10

2011-11-22

Howell, Daniel W. (Department: 3726)

Cutting by use of rotating axially moving tool

Tool or tool with support

Having peripherally spaced cutting edges

C408S233000

Reexamination Certificate

active

08061938

ABSTRACT:
A twist drill has double margins and a chisel edge angle of between 80 degrees and 100 degrees to maximize hole straightness and to minimize “walking” of the drill upon a workpiece. The drill may be modular having a removable tip body or the drill may be of a solid configuration. A tip body is consumable and may be removed and replaced as required.

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