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:
Jun. 09, 2009
Filed:
Apr. 28, 2006
Hideyuki Ogawa, Nagano, JP;
Koichi Saito, Nagano, JP;
Nagamitsu Takashima, Nagano, JP;
Nobuyuki Soma, Nagano, JP;
Katsunori Ono, Nagano, JP;
Hideyuki Ogawa, Nagano, JP;
Koichi Saito, Nagano, JP;
Nagamitsu Takashima, Nagano, JP;
Nobuyuki Soma, Nagano, JP;
Katsunori Ono, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A punching apparatus forms a hole at a bottom portion of each of recesses which are formed in a metal plate in advance and arrayed in a first direction. A female die supports the metal plate. A male die is opposed to the recess and provided with a punch array in which a plurality of punches in the first direction. The male die is movable in a second direction perpendicular to the first direction to form the hole with each of the punches. The punches include first punches each having a distal end face which is slant in the second direction. A slant angle of the distal end face corresponds to a warp of the plate member due to the formation of the recesses.