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:
Dec. 03, 2019
Filed:
Oct. 03, 2017
Applicant:
Nippon Tungsten Co., Ltd., Fukuoka-shi, Fukuoka, JP;
Inventors:
Takahiro Yoshihara, Fukuoka, JP;
Shigeki Mouri, Fukuoka, JP;
Assignee:
NIPPON TUNGSTEN CO., LTD., Fukuoka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B26D 7/20 (2006.01); B26F 1/38 (2006.01); B26F 1/44 (2006.01);
U.S. Cl.
CPC ...
B26D 7/204 (2013.01); B26F 1/384 (2013.01); B26F 1/44 (2013.01); B26F 2001/4436 (2013.01);
Abstract
A rotary cutter includes a die cut roll having a cutting blade, and an anvil roll positioned so that a roll surface faces the cutting blade. The roll surface of the anvil roll is made of a hard material including at least either cemented carbide or cermet. The Young's modulus of the hard material is between 300 GPa and 400 GPa. The Vickers hardness (Hv) of the hard material is 800 or more.