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:
May. 17, 2022

Filed:

Jan. 28, 2020
Applicant:

Futaba Industrial Co., Ltd., Aichi, JP;

Inventor:

Hirotaka Niinomi, Aichi, JP;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B21D 5/00 (2006.01); B21D 5/10 (2006.01); B21D 51/16 (2006.01); B21D 51/10 (2006.01); B21D 5/01 (2006.01); B21D 37/10 (2006.01);
U.S. Cl.
CPC ...
B21D 5/10 (2013.01); B21D 5/015 (2013.01); B21D 37/10 (2013.01); B21D 51/10 (2013.01); B21D 51/16 (2013.01);
Abstract

A pipe is formed by press molding a U-shaped member including a U-shaped cross section. The U-shaped cross section includes at least five curved portions. The curved portions include a center curved portion facing an opening of the U-shaped cross section defined by both edges of the U-shaped cross section; a first right curved portion; a second right curved portion; a first left curved portion; and a second left curved portion. At least the center curved portion, the first right curved portion, and the first left curved portion each have a radius of curvature smaller than a radius of curvature of a corresponding portion of the pipe cross section.


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