Invention Grant
- Patent Title: Adjustable step drill bit
- Patent Title (中): 可调式步进钻头
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Application No.: US12539445Application Date: 2009-08-11
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Publication No.: US08622666B2Publication Date: 2014-01-07
- Inventor: Ira Kozak
- Applicant: Ira Kozak
- Applicant Address: US IL Chicago
- Assignee: Combined Producers Co. #1 Inc.
- Current Assignee: Combined Producers Co. #1 Inc.
- Current Assignee Address: US IL Chicago
- Agency: Factor Intellectual Property Law Group
- Main IPC: B23B51/02
- IPC: B23B51/02

Abstract:
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.
Public/Granted literature
- US20110038679A1 ADJUSTABLE STEP DRILL BIT Public/Granted day:2011-02-17
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