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. 03, 2018
Filed:
Sep. 05, 2014
Ngk Spark Plug Co., Ltd., Nagoya-shi, Aichi, JP;
Shusuke Kitagawa, Kani, JP;
NGK SPARK PLUG CO., LTD., Nagoya, JP;
Abstract
A recess surface portionis formed in a predetermined range Lfrom a front endtoward a rear end, of a lateral flankof a front end portionof a holder, so as to be recessed relative to a lateral flankof a rear portion, a circular arc surface portion (frontward-facing surface)formed in a circular arc shape as seen from a rake faceside is provided on the rear of the recess surface portion, and an ejection portis opened in the frontward-facing surface. Accordingly, supply of the coolant at the lateral flank side is ensured, and cutting can be performed at a position closer to a chuck Ck due to no protruding portion being present at the lateral flank side of the holder as in the conventional art.