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:
Feb. 13, 2007
Filed:
Dec. 14, 2004
Yoshihiko Funakoshi, Fukuoka, JP;
Takeshi Tsunezumi, Fukuoka, JP;
Naohiro Mizuno, Fukuoka, JP;
Katsuhiko Tokuno, Fukuoka, JP;
Chikayuki Matsumoto, Fukuoka, JP;
Yoshiharu Taura, Hiroshima, JP;
Shigenori Shirogane, Hiroshima, JP;
Katsunari Ohsono, Hyogo, JP;
Toshihiro Matsuoka, Hyogo, JP;
Yoshihiko Funakoshi, Fukuoka, JP;
Takeshi Tsunezumi, Fukuoka, JP;
Naohiro Mizuno, Fukuoka, JP;
Katsuhiko Tokuno, Fukuoka, JP;
Chikayuki Matsumoto, Fukuoka, JP;
Yoshiharu Taura, Hiroshima, JP;
Shigenori Shirogane, Hiroshima, JP;
Katsunari Ohsono, Hyogo, JP;
Toshihiro Matsuoka, Hyogo, JP;
Mitsubishi Heavy Industries Ltd., Tokyo, JP;
Abstract
In the metal billet to be used for hot dilation forming, a forward side with respect to the pressing direction has a quadrate section and its diagonal length is not more than an inner diameter of a container. Moreover, a backward side with respect to the pressing direction has a circular section and its diameter is substantially same as the inner diameter of the container. The metal billet is heated to a temperature suitable for press working and is set into a container for press forming. While a center of a workpiece of the metal billet is being bored by a boring punch to be operated by a pressing machine, the metal billet is hot-dilated so that a bottomed container for a cask is formed.