Drill bit

US10029315B2 · kind B2 · utility

Assignee

• Milwaukee Electric Tool Corporation · US

Inventors

• Edward S. Lau · Menomonee Falls, US
• Douglas W. Allen · Oconomowoc, US
• Marc S. D'Antuono · Whitefish Bay, US
• Courtney McCool · Menomonee Falls, US
• Smith C. Theiler · Plymouth, US

Key dates

• Filing date: May 1, 2013
• Grant date: Jul 24, 2018
• Expiry date: May 26, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T408/909
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A drill bit configured for use with a rotary power tool including a chuck. The drill bit includes a shank including a first end and a second end, and a paddle that extends from the second end of the shank. The paddle includes a first face including a concave portion, a second face opposite the first face and the second face including a convex portion opposite the concave portion, a cutting surface, a cutting edge located at an end of the cutting surface, a relief angle defined by the cutting surface, and an angled rake face adjacent the cutting surface that defines a rake angle that is between about 5 degrees and about 45 degrees.