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:
Apr. 29, 1997
Filed:
May. 15, 1996
Kazunari Kirii, Aichi-ken, JP;
Abstract
Pressing method and system wherein a drawing operation on blank is performed by die and punch while the blank is held between the die and a pressure ring by a blank holding force which is generated based on a movement resistance of the cushion platen and which is transmitted to the pressure ring through first cylinders and cushion pins, and wherein during a downward movement of the die toward the pressure ring, the cushion platen is moved down against the movement resistance before holding of the blank between the die and the pressure ring, by cooperation of second cylinders disposed on the cushion platen and communicating with the first cylinders, and shock absorbers disposed between the second cylinders and the die or a member moving with the die, so that the speed at which the die collides with the pressure ring is reduced by the downward movement of the pressure ring with the cushion platen.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile