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. 19, 2003
Filed:
Sep. 20, 2001
Applicant:
Inventors:
Takahiro Sanada, Kashihara, JP;
Yoshiro Sakai, Kyotanabe, JP;
Narito Shimizu, Nagoya, JP;
Jun Yatazawa, Toukai, JP;
Shigeru Iwasa, Toukai, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21K 2/112 ;
U.S. Cl.
CPC ...
B21K 2/112 ;
Abstract
Described is a method of manufacturing a crown-shaped component having a plurality of axially extending protrusions which are formed at an end of a cylindrical portion The method comprises the steps of: upsetting the cylindrical portion into a cylindrical blank having protrusions arrayed on and along the inner circumferential surface of a remaining part annealing the cylindrical blank; removing the remaining part by cutting; and subjecting the resultant blank to a shot blasting process, whereby a magnetic characteristic of the resultant crown-shaped component is improved.