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.

Date of Patent:
Aug. 02, 2016

Filed:

Oct. 24, 2013
Applicant:

Hino Motors, Ltd., Hino-shi, JP;

Inventors:

Takashi Ishimori, Tokyo, JP;

Masayuki Okano, Tokyo, JP;

Assignee:

HINO MOTORS, LTD., Hino-shi, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D 5/16 (2006.01); B21D 53/00 (2006.01); B21D 35/00 (2006.01); B21D 5/01 (2006.01); B21D 53/06 (2006.01); F28F 1/42 (2006.01); F28F 1/02 (2006.01); B21D 28/02 (2006.01); B21D 53/04 (2006.01);
U.S. Cl.
CPC ...
B21D 5/16 (2013.01); B21D 5/015 (2013.01); B21D 28/02 (2013.01); B21D 35/001 (2013.01); B21D 35/002 (2013.01); B21D 53/04 (2013.01); B21D 53/06 (2013.01); F28F 1/025 (2013.01); F28F 1/426 (2013.01); F28F 2001/428 (2013.01); F28F 2255/08 (2013.01);
Abstract

A method for manufacturing a flat pipewith concave-convex shapes on inner and outer surfaces includes making incisions with an expanded shape of the flat pipein a metal thin platesuch that intermediate portions(middle portions) in the expanded shape of the flat pipewidthwise of the expanded shape are left uncut from the thin plate, machining the concave-convex shapes in a range of the expanded shape of the flat pipeand raising the expanded shape of the flat pipefrom the thin plateas cut-and-raised pieceswith the uncut intermediate portionsin between, closing tips of the cut-and-raised piecestogether to form an overall shape of the flat pipe, and separating the uncut intermediate portionsfrom the thin plateto obtain the flat pipe


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