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. 12, 2005
Filed:
Feb. 27, 2001
Applicants:
Akihiro Kubota, Shibata, JP;
Shuji Mori, Shibata, JP;
Masamichi Fujimoto, Shibata, JP;
Inventors:
Assignee:
Fujitsu Limited, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
B26D007/26 ;
U.S. Cl.
CPC ...
Abstract
A press punching apparatus makes many holes at the same time and changes an arrangement of the holes without changing a punch block and a die block. A punching mold is provided with a plurality of punches having different lengths. A travel distance of the mold is adjusted so that a first part of the punches penetrates a work piece to be punched in a first stroke. Then, the travel distance of the mold is changed so that the work piece is punched by a second part of the punches other than the first part of the punches in a second stroke.