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. 21, 2012
Filed:
Mar. 31, 2006
Keisuke Mishima, Tokyo, JP;
Hirofumi Kuroda, Tokyo, JP;
Keisuke Mishima, Tokyo, JP;
Hirofumi Kuroda, Tokyo, JP;
Kayaba Industry Co., Ltd., Tokyo, JP;
Abstract
A press-molding device () press molds a bottom portion of a work piece () having a closed-end shape between an, inner die () inserted into the work piece () and an outer die () disposed on an outside of the work piece (). A chuck position switching mechanism () grips the work piece () so that the work piece () can move in an axial direction. An inner die moving mechanism () inserts the inner die () into the inside end of the work piece (). A stopper mechanism () supports the inner die () in a processing position by restricting movement of the inner die (). An outer die moving mechanism () press-molds the bottom portion of the work piece () between the outer die () and the inner die (), thereby press-molding the workpiece () smoothly without damaging an inner peripheral surface of the workpiece ().