The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 12, 2014
Filed:
Jun. 08, 2010
Ulrich Krenzer, Zirndorf, DE;
Peter Marz, Dietenheim, DE;
Ulrich Krenzer, Zirndorf, DE;
Peter Marz, Dietenheim, DE;
Abstract
The invention proposes a drill bit () leaving at least one main cutting edge (') and at least one center cutting edge (′), wherein the drill bit () comprises a longitudinal axis (), and wherein the at least one main cutting edge (′) and the at least one center cutting edge (′) are each assigned a rake face (′). The drill bit () is characterized in that the rake face (′) assigned to the at least one center cutting edge (′) has at least two part faces (′) which—as seen as perpendicular to the longitudinal axis () of the drill bit ()—form an obtuse angle with one another, so that the at least one center cutting edge (′) comprises at least two part cutting edges (′).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile