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. 13, 2011
Filed:
Aug. 10, 2006
Katsumi Kojima, Tokyo, JP;
Yuka Nishihara, Tokyo, JP;
Hiroshi Kubo, Tokyo, JP;
Yoshihiko Yasue, Tokyo, JP;
Yasuhide Oshima, Tokyo, JP;
Hiroki Iwasa, Tokyo, JP;
Katsumi Kojima, Tokyo, JP;
Yuka Nishihara, Tokyo, JP;
Hiroshi Kubo, Tokyo, JP;
Yoshihiko Yasue, Tokyo, JP;
Yasuhide Oshima, Tokyo, JP;
Hiroki Iwasa, Tokyo, JP;
JFE Steel Corrporation, , JP;
Abstract
We manufacture a two-piece can by the method using a laminated steel sheet as the base material, having the steps of: drawing a cylindrical blank for several times to form a can body in a shape of cylinder integrated with bottom; forming a tapered part extending outward from the can body in the radial direction thereof at the tip of the opening of the can body; applying diametral reduction to the tapered part to the diameter of the can body; and applying diametral reduction to the opening side of the can body to a diameter smaller than the diameter of the can body, while satisfying the formulae (1) and (2),1.5≦/()  (1)≦0.25  (2)where h is the height from the can bottom to the tip of the opening, R is the circular blank positional radius, r is the radius of the can bottom, and d is the radius of the tip of the opening.