Invention Grant
- Patent Title: Step drill bit
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Application No.: US15668874Application Date: 2017-08-04
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Publication No.: US10252351B2Publication Date: 2019-04-09
- Inventor: Douglas W. Allen , Courtney D. McCool , Smith C. Theiler , Richard Hohnl, Jr.
- Applicant: Milwaukee Electric Tool Corporation
- Applicant Address: US WI Brookfield
- Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
- Current Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
- Current Assignee Address: US WI Brookfield
- Agency: Michael Best & Friedrich LLP
- Main IPC: B23B51/00
- IPC: B23B51/00 ; B23B51/02

Abstract:
A drill bit includes a shank, a transition portion, and a body portion defining a plurality of axially stacked, progressively sized steps. The steps include a first step and a terminal step coupled to the transition portion. The first step defines two tip flutes each disposed at a tip flute angle. The body portion defines a body flute extending from the first step to the transition portion. The drill bit also includes an indicator band formed on a portion of the body flute and a portion of an outer surface of one of the plurality of steps.
Public/Granted literature
- US20170326651A1 STEP DRILL BIT Public/Granted day:2017-11-16
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