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:
Jan. 30, 2018
Filed:
Nov. 07, 2014
Drebo Werkzeugfabrik Gmbh, Athshausen, DE;
DREBO WERKZEUGFABRIK GMBH, Altshausen, DE;
Abstract
A drill head insert or drill head attachment, in particular a drill plate made of hard metal, for a rock drill, includes cutting edges () configured on the feed side which extend from a tip of the drill () rearward in a receding manner to an outer face () of the drill plate (). A drill plate () is substantially configured in the form of a roof when viewed from the side. A free face () at the cutting edge () abuts against a cutting face () along a substantial part of its extension between the tip of the drill () and the outer face (). A substantially smooth contour of the cutting edge () is interrupted by at least one projection () which projects beyond the cutting edge () in the feed direction.