US 12,214,825 B2
Flanged member
Satoshi Shimizu, Ehime (JP); Masayuki Ishizuka, Ehime (JP); Masayuki Saika, Ehime (JP); and Norieda Ueno, Ehime (JP)
Assigned to Sumitomo Heavy Industries, Ltd., Tokyo (JP)
Filed by SUMITOMO HEAVY INDUSTRIES, LTD., Tokyo (JP)
Filed on May 16, 2022, as Appl. No. 17/745,531.
Application 17/745,531 is a continuation of application No. PCT/JP2020/045851, filed on Dec. 9, 2020.
Claims priority of application No. 2020-006717 (JP), filed on Jan. 20, 2020.
Prior Publication US 2022/0274651 A1, Sep. 1, 2022
Int. Cl. B21D 26/047 (2011.01); B21D 22/02 (2006.01); B21D 53/88 (2006.01); B62D 25/08 (2006.01); B62D 29/00 (2006.01); B62D 25/14 (2006.01); F16L 9/00 (2006.01)
CPC B62D 25/08 (2013.01) [B21D 22/02 (2013.01); B21D 26/047 (2013.01); B21D 53/88 (2013.01); B62D 29/007 (2013.01); B62D 25/14 (2013.01); F16L 9/003 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A flanged member that is obtained by hot blow forming a tubular body, has a tubular shape, and includes a flange portion, the flanged member comprising:
a cross-section changing portion of which a cross-sectional shape changes along an axial direction of the flanged member,
wherein the cross-section changing portion includes the flange portion,
the flange portion is formed along the axial direction and has a width changing along the axial direction, and
in any two cross-sections in the cross-section changing portion, a perimeter of one cross-section is 1.25 times or less a perimeter of the other cross-section.