Adjustable step drill bit

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United States of America Patent

PATENT NO 8622666
APP PUB NO 20110038679A1
SERIAL NO

12539445

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An adjustable step drill bit with a plurality of cutting disks held in compression on a shaft between two stops. The cutting disks may be arranged in various configurations. Spacers may also be provided on the shaft with the cutting disks. A method of drilling a hole utilizing the drill bit to drill a pilot hole and allowing for the drill bit to be used in a pulling technique.

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Patent Owner(s)

Patent OwnerAddress
COMBINED PRODUCTS CO #1 INC4006 W BELDEN AVENUE CHICAGO IL 60639-3702

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kozak, Ira Riverwoods, US 29 245

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