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. 08, 2016
Filed:
May. 12, 2011
Akira Tange, Yokohama-Shi, JP;
Kiyoshi Kurimoto, Yokohama-Shi, JP;
Yurika Goto, Yokohama-Shi, JP;
Iwao Shigeoka, Tokyo, JP;
Tadakazu Kato, Tokyo, JP;
Shinichi Inoguchi, Tokyo, JP;
Akira Tange, Yokohama-Shi, JP;
Kiyoshi Kurimoto, Yokohama-Shi, JP;
Yurika Goto, Yokohama-Shi, JP;
Iwao Shigeoka, Tokyo, JP;
Tadakazu Kato, Tokyo, JP;
Shinichi Inoguchi, Tokyo, JP;
NHK SPRING CO., LTD., Yokohama-shi, JP;
Abstract
A method for producing a leaf spring having a leaf portion and an eye portion formed at the leaf portion including: forming a gap between a leading end of the eye and a facing surface facing the leading end, and shot peening an inner surface of the eye via a reflection member, wherein, at a cross section perpendicular to an axial direction of the eye portion, the leading end of the eye faces the facing surface so a straight line does not cross the leading end of the eye, the straight line connecting an intersection point and a center point of a reflection member surface, the intersection point being the intersection of a line perpendicular to the facing surface extending through an endpoint of the leaf side of the leading end of the eye to the surface.