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:
Mar. 24, 1998
Filed:
Jun. 23, 1995
Applicant:
Inventors:
Hideo Yoshioka, Miura, JP;
Makoto Oiyama, Hiratsuka, JP;
Yujiro Ohara, Kamakura, JP;
Kiyoshi Takagi, Tokyo, JP;
Assignee:
Nissan Motor Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21B / ;
U.S. Cl.
CPC ...
295275 ; 2989432 ; 29894324 ; 72352 ; 72356 ;
Abstract
A method of producing a disc of an automotive road wheel by using an aluminum alloy as a material. The producing method comprising the following steps: (1) casting a disc material including an annular spoke section which has a ridge and is formed with a depression, the depression defined by a bottom wall; and (2) forging the disc material to obtain the forged disc by applying a processing degree of not less than 15% to the bottom wall of the spoke section and by applying a stress of not less than 50 MPa to the ridge of the spoke section.