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:
May. 09, 1995
Filed:
Mar. 31, 1994
Tatsuya Wada, Kanagawa, JP;
Syouji Murayama, Kanagawa, JP;
Kazuhiko Kuroda, Kanagawa, JP;
Yukiyoshi Satomura, Kanagawa, JP;
Tadashi Matsuoka, Kanagawa, JP;
Mitsuharu Nonami, Kanagawa, JP;
Kozo Matsumoto, Kanagawa, JP;
Yukinori Kawamura, Kanagawa, JP;
Norikatsu Matsumoto, Kanagawa, JP;
Hiroshi Hikita, Kanagawa, JP;
Hideo Iwata, Kanagawa, JP;
Fuji Electric Co., Ltd., Kanagawa, JP;
Abstract
A piezo-electric actuator operated press in which piezo-electric actuators are employed as punch driving sources, and, with a workpiece held between an upper and lower die set, the punches are driven by the piezo-electric actuators to punch the workpiece; the punches and the piezo-electric actuators are built in the respective die sets, and the movable one of the die sets is coupled to a die shifting mechanism, so that it is driven to a die opening position or a die closing position, whereby the workpiece can be smoothly fed in and taken out of the press.