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:
Apr. 19, 2022
Filed:
Oct. 10, 2016
Tmt Tapping-measuring-technology Sarl, Luxembourg, LU;
Romain Clesen, Colpach Haut, LU;
Gerhard Meier, Trier, DE;
TMT TAPPING-MEASURING-TECHNOLOGY SARL, Luxembourg, LU;
Abstract
A drill bit () for the drilling, in particular the rotary percussive drilling, of a hole, in particular a tap hole of a melting furnace, the drill bit () comprising a drill head (), which has at least one hard material insert (), and a base body () for connecting the drill bit to a driving element, the hard material insert () being inserted into a seat, which is formed in an axial end face () of the drill head (), in such a manner that at least a head cutting edge () of the hard material insert () protrudes beyond the axial end face (), wherein the seat has a flank portion and a mating flank portion located opposite the flank portion, between which the hard material insert () is disposed, the flank portion, which is disposed opposite a recess formed in the hard material insert (), being provided with a material projection () which is at least partially made of a welding material, is bonded to the drill head () via the welding material and protrudes into the recess so as to establish a form-fitting connection with the hard material insert ().