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. 09, 2003
Filed:
Jun. 20, 2002
Applicant:
Inventors:
Akihisa Inoue, Sendai-shi, Miyagi-ken, JP;
Junkou Kurosaki, Aichi-ken, JP;
Kiyoshi Okumura, Aichi-ken, JP;
Kouji Kajita, Aichi-ken, JP;
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
B24C 1/100 ; C21D 8/00 ;
U.S. Cl.
CPC ...
B24C 1/100 ; C21D 8/00 ;
Abstract
A method for shot peening wherein peening shot having a Vickers hardness (Hv) in the range of 900-1100 and a Young's modulus of 200,000 MPa or less, is used, and wherein a treated article is obtained by such a method that has a maximum residual compressive stress of 1600 MPa or more and a surface roughness of 5 microns or less.