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. 18, 2017
Filed:
Jun. 09, 2015
Kennametal Inc., Latrobe, PA (US);
Tim Guter, Zirndorf, DE;
KENNAMETAL INC., Latrobe, PA (US);
Abstract
The invention relates to a rotary tool (), in particular a drill, having a cutting part () that extends in a longitudinal direction () from a clamping shank () arranged in a rearward region () to a tool front () arranged in a forward region (), and in which helically running chip flutes () and continuously helically running coolant channels () are fashioned, such that an exit opening () of each coolant channel () is arranged in the respective chip flute (), wherein the chip flutes () are each shaped with an angle of twist (α) varying in the longitudinal direction () such that, in the forward region () facing towards the tool front (), the respective coolant channel () is intersected by the respective chip flute () so as to fashion the exit opening ().