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:
Mar. 10, 2015
Filed:
Feb. 18, 2011
Toshiyuki Nanaarashi, Tokyo, JP;
Keiichi Morishita, Tokyo, JP;
Toshiyuki Nanaarashi, Tokyo, JP;
Keiichi Morishita, Tokyo, JP;
Hidaka Seiki Kabushiki Kaisha, Tokyo, JP;
Abstract
A corrugate fin manufacturing apparatus includes: a die; a machining punch inserted into a concave in the die to form a rib, wherein on entering the concave, the machining punch does not contact a part of a plate-like body that has not been machined into ribs or does not cause resistance to drawing in of the unmachined part during formation of a rib even when there is contact; a mounting portion provided on the die; and a flat punch provided upstream of the machining punch, wherein when a rib is being formed, the flat punch is positioned to not contact the unmachined part or shaped to not cause resistance to drawing in of the machined part even when there is contact, and wherein after formation of a rib, the flat punch presses down the unmachined part and flattens the unmachined part in combination with the mounting portion.