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:
Jul. 06, 2010
Filed:
Dec. 26, 2007
Satoru Kaimura, Oyama-shi, JP;
Yasuji Kawamata, Oyama-shi, JP;
Takashi Tamura, Oyama-shi, JP;
Ryoichi Hoshino, Oyama-shi, JP;
Noboru Ogasawara, Oyama-shi, JP;
Satoru Kaimura, Oyama-shi, JP;
Yasuji Kawamata, Oyama-shi, JP;
Takashi Tamura, Oyama-shi, JP;
Ryoichi Hoshino, Oyama-shi, JP;
Noboru Ogasawara, Oyama-shi, JP;
Showa Denko K.K., Tokyo, JP;
Abstract
A metal plate for producing a flat tube including a metal body having a joint portion, first and second flat wall forming portions connected by the joint portion, reinforcing wall forming portions projecting from the first and second flat wall forming portions and extending in a longitudinal direction of the first and second flat wall forming portions, and side wall forming portions projecting from opposite side edges of the metal body, respectively. The joint portion has a ridge which makes the joint portion thicker than the first and second flat wall forming portions. The ridge, the reinforcing wall forming portions and the side wall forming portions are projecting in a same direction. The metal body bends into a hairpin shape at boundaries formed between the ridge of the joint portion and the first and second flat wall forming portions.