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:
Apr. 18, 2006
Filed:
May. 09, 2003
Applicants:
Rikiya Takahashi, Shizuoka, JP;
Tomoyoshi Tamura, Shizuoka, JP;
Inventors:
Rikiya Takahashi, Shizuoka, JP;
Tomoyoshi Tamura, Shizuoka, JP;
Assignee:
NSK-Warner Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D 53/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of manufacturing a friction plate including a plurality of frictional material segments which are punched into a predetermined shape, and a core plate onto which the plurality of frictional material segments are annularly bonded, comprising step of punching out the frictional material segment in such manner that an edge portion thereof along the predetermined shape is given a punching load earlier than the other portions thereof in the process of punching.