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:
Sep. 20, 2005
Filed:
Jan. 14, 2003
Toshio Hiranuma, Tokyo, JP;
Masakazu Ishizeki, Tokyo, JP;
Tomohiro Koshiba, Tokyo, JP;
Kouichi Tsutsumi, Tokyo, JP;
Toshio Hiranuma, Tokyo, JP;
Masakazu Ishizeki, Tokyo, JP;
Tomohiro Koshiba, Tokyo, JP;
Kouichi Tsutsumi, Tokyo, JP;
Max Co., Ltd., Tokyo, JP;
Abstract
A plurality of chip evacuating grooves () in a vertical direction in parallel with a rotational axis of a core main body () are formed at an outer peripheral face of the core main body () in a circumferential direction from a lower end portion to an upper end portion of the core main body () in a cylindrical shape provided with a drilling blade () at a lower end edge thereof. Further, a sectional area of the chip evacuating groove () is formed to gradually increase from a lower end to an upper end of the core main body (). Further, a number of projections () are formed at the outer peripheral face of the core main body () between the chip evacuating grooves.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile