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. 16, 2003
Filed:
Sep. 26, 2001
Applicant:
Inventors:
Yoshikazu Kusachi, Iwata-gun, JP;
Akihiko Nakagawa, Iwata-gun, JP;
Assignee:
Tenryu Seikyo Kabushiki Kaisha, Shizuoka, JP;
Primary Examiner:
Int. Cl.
CPC ...
B24B 9/00 ; B23B 5/100 ;
U.S. Cl.
CPC ...
B24B 9/00 ; B23B 5/100 ;
Abstract
A metal bonded drilling tool which is improved in grinding performance with a long life and can drill a hole in a dry condition without the need for water. The metal bonded drilling tool includes a cylindrical body having an open front end portion, a shank integral with the cylindrical body and having a threaded hole for use in mounting the tool to a rotary tool, and numerous abrasive grains bonded to a front edge of the cylindrical body and to inner and outer cylindrical surfaces of the front end portion of the cylindrical body by a bond member formed primarily of copper alloy.