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公开(公告)号：US20210245636A1
公开(公告)日：2021-08-12
申请号：US17167924
申请日：2021-02-04
Applicant: NHK SPRING CO., LTD.
Inventor： Shunichiro OSA , Junichiro HORII , Takuma OKI , Kousuke YONEMOCHI
Abstract: A columnar body including: plural elongated plate shaped panel members extending in one direction; and plural weld portions where two width direction end portions of respective panel members out of the plural panel members are welded together to configure a closed cross-section.
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