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:
Dec. 22, 2015
Filed:
Jun. 15, 2010
Nobuyuki Matsuda, Anpachi-gun, JP;
Hiroyuki Higashi, Anpachi-gun, JP;
Koichiro Naruke, Anpachi-gun, JP;
Tadashi Yamamoto, Anpachi-gun, JP;
Kazuya Yanagida, Anpachi-gun, JP;
Nobuyuki Matsuda, Anpachi-gun, JP;
Hiroyuki Higashi, Anpachi-gun, JP;
Koichiro Naruke, Anpachi-gun, JP;
Tadashi Yamamoto, Anpachi-gun, JP;
Kazuya Yanagida, Anpachi-gun, JP;
MITSUBISHI MATERIALS CORPORATION, Tokyo, JP;
Abstract
A coolant-hole equipped drill includes a drill main body, a cutting edge portion which has a tip flank, a chip discharging groove provided with a front groove wall surface and a rear groove wall surface, a cutting edge formed at a ridge line portion where the front groove wall surface and the tip flank intersect with each other, a land portion formed between the chip discharging grooves adjacent to each other in the rotating direction, and a coolant hole drilled at the land portion and opened at the tip flank. The coolant hole includes a front hole wall surface, a rear hole wall surface, and an outer-circumference hole wall surface.