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:
May. 17, 2016
Filed:
Nov. 19, 2010
Jens Eggemann, Guldental, DE;
Detlev Bross, Neu Wulmstorf, DE;
Gerhard Peyerl, Geisenheim, DE;
Klaus Springer, Herten, DE;
Jens Eggemann, Guldental, DE;
Detlev Bross, Neu Wulmstorf, DE;
Gerhard Peyerl, Geisenheim, DE;
Klaus Springer, Herten, DE;
OERLIKON SURFACE SOLUTIONS AG, PFÄFFIKON, Pfäffikon SZ, CH;
Abstract
The invention relates to a deep-hole drill, comprising a first coating extending over the effective length of the guide section and a second coating that is applied to the tip of the drill in the cutting region, the region of which extends over an axial length that, at a maximum, corresponds to double the nominal diameter of the drill. In such a way, when the bore tip is worn by use, said tip can be recoated after sharpening without the nominal diameter of the drill tip substantially increasing, in particular even after being sharpened several times.