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:
Feb. 26, 2019
Filed:
Jun. 18, 2014
Kyocera Corporation, Kyoto-shi, Kyoto, JP;
Masahiko Kuroda, Higashiomi, JP;
Yoji Nakazono, Higashiomi, JP;
KYOCERA CORPORATION, Kyoto-Shi, Kyoto, JP;
Abstract
The drill () is provided with a drill body () having a rotation center axis (O), two cutting edges () provided on the tip side of the drill body (), and chip evacuation flutes () provided behind the two cutting edges () in the direction of rotation of the drill () from the two cutting edges, the drill tip angle (α) being from 170 to 190°, the web thickness (d) being from 0.10 to 0.25 times the drill diameter (D), the opening angle (γ) of the chip evacuation flutes () being from 85 to 110°, and the drill () comprising a curve having a radius of curvature that gradually decreases from the cutting edge side wall surface () to the heel side wall surface () of the chip evacuation flutes () in a cross-section at a position where the chip evacuation flutes () are present.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile