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:
Mar. 12, 2019
Filed:
Sep. 01, 2014
Betek Gmbh & Co. KG, Aichhalden, DE;
Wirtgen Gmbh, Windhagen, DE;
Thomas Lehnert, Oberraden, DE;
Karsten Buhr, Willroth, DE;
Cyrus Barimani, Königswinter, DE;
Heiko Friederichs, Aichhalden, DE;
Karl Kammerer, Fluorn-Winzeln, DE;
Markus Roth, Aichhalden, DE;
Betek GmbH & Co. KG, , DE;
Wirtgen GmbH, , DE;
Abstract
The invention relates to a chisel () having a chisel head () and a chisel shaft (), wherein near its end facing away from the chisel head the chisel shaft has a threaded portion having a thread (), wherein the chisel head holds a chisel tip () made of a hard material, and wherein near the side facing the chisel shaft the chisel head is provided with a supporting surface (). Especially when superhard hard materials are used for the chisel tip, a load-optimized chisel design is obtained by a domed supporting surface ().