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:
Aug. 28, 2001
Filed:
Sep. 23, 1999
Kenji Nakahara, Fukuoka, JP;
Koichi Ibusuki, Fukuoka, JP;
Shouji Eguchi, Fukuoka, JP;
Kohei Kitahara, Fukuoka, JP;
Kei Tokumoto, Fukuoka, JP;
Shigeya Sakaguchi, Fukuoka, JP;
Nippon Tungsten Co., Ltd., Fukuoka, JP;
Abstract
A die cut roll includes a rotary driving roll having projecting pressure cutting blades on a surface thereof formed in accordance with the shape of a product to be cut to thereby form a die cutter and an anvil roll adapted to receive an edge of each of the projecting pressure cutting blades of the die cutter. The rotary driving roll includes inclined finishing surfaces formed adjacent to a top smooth portion of an edge of each of the projecting pressure cutting blades by a grinding process so that the inclined finishing surfaces have grinding flaws which make an angle &phgr; of 50°-90° to ridgelines defining the top smooth portion.