- 专利标题: Hollow spring member and manufacturing method therefor
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申请号: US16146269申请日: 2018-09-28
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公开(公告)号: US11285776B2公开(公告)日: 2022-03-29
- 发明人: Akira Tange , Masato Sugawara , Yutaka Wakabayashi
- 申请人: NHK SPRING CO., LTD.
- 申请人地址: JP Yokohama
- 专利权人: NHK SPRING CO., LTD.
- 当前专利权人: NHK SPRING CO., LTD.
- 当前专利权人地址: JP Yokohama
- 代理机构: Holtz, Holtz & Volek PC
- 优先权: JPJP2016-068060 20160330
- 主分类号: B60G21/055
- IPC分类号: B60G21/055 ; F16F1/02 ; F16F1/14 ; B23P23/04
摘要:
A terminal sealed portion is formed on an end portion of a hollow rod made of steel. An enclosed space is formed on an inner side of the hollow rod. At an end of the enclosed space, a terminal gap is formed. A volatile powdered rust inhibitor is supplied in the enclosed space. As the volatile powdered rust inhibitor is vaporized, the enclosed space is turned into a rust-inhibiting atmosphere. As the vaporized component of the volatile powdered rust inhibitor is adsorbed to an inner surface of the enclosed space, an inner surface rust-inhibiting film is formed. The vaporized component also enters inside the terminal gap, and forms a terminal rust-inhibiting film.
公开/授权文献
- US20190030980A1 HOLLOW SPRING MEMBER AND MANUFACTURING METHOD THEREFOR 公开/授权日:2019-01-31