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. 30, 2014
Filed:
Dec. 21, 2010
Atsumi Imai, Chiba, JP;
Takehide Aiga, Chiba, JP;
Masanori Nagai, Tochigi, JP;
Takayuki Sato, Tochigi, JP;
Kenji Fujimoto, Tokyo, JP;
Tsuyoshi Matsumoto, Tochigi, JP;
Hiroshi Kihira, Chiba, JP;
Atsumi Imai, Chiba, JP;
Takehide Aiga, Chiba, JP;
Masanori Nagai, Tochigi, JP;
Takayuki Sato, Tochigi, JP;
Kenji Fujimoto, Tokyo, JP;
Tsuyoshi Matsumoto, Tochigi, JP;
Hiroshi Kihira, Chiba, JP;
Nippon Steel & Sumikin Anti-Corrosion Co., Ltd., Tokyo, JP;
Dai Nippon Toryo Co., Ltd, Osaka, JP;
Abstract
An inexpensive rotary grinding tool with reduced noise level of the grinding is provided. The rotary grinding tool comprises a metal disk having a grinding surface on at least a part of its surface and a holder for supporting the metal disk. The grinding surface has hard grains having a Mohs hardness in excess of 9 brazed thereon at a surface density of at least 20 grains/cm. The holder has at its center a securing means for securing the holder on rotary shaft of a rotary drive unit. The holder and the metal disk are joined together to constitute the rotary grinding tool.