Invention Grant
- Patent Title: Fastening member
-
Application No.: US16495466Application Date: 2018-03-02
-
Publication No.: US11286972B2Publication Date: 2022-03-29
- Inventor: Noriyoshi Kaneda , Takeshi Suzuki
- Applicant: NHK Spring Co., Ltd.
- Applicant Address: JP Yokohama
- Assignee: NHK Spring Co., Ltd.
- Current Assignee: NHK Spring Co., Ltd.
- Current Assignee Address: JP Yokohama
- Agency: Locke Lord LLP
- Priority: JPJP2017-058387 20170324
- International Application: PCT/JP2018/008161 WO 20180302
- International Announcement: WO2018/173705 WO 20180927
- Main IPC: F16B33/02
- IPC: F16B33/02 ; F16B35/04 ; F16B33/06 ; C22C21/00
Abstract:
A fastening member includes a screw thread formed therein. A portion including a crest portion of the screw thread is formed of a first alloy material and includes: a thick portion where the portion is maximized in thickness in a circumferential direction; and a thin portion where the portion is minimized in thickness in the circumferential direction. A portion including a root of the screw thread is formed of a second alloy material having a tensile strength higher than that of the first alloy material.
Public/Granted literature
- US20200072272A1 FASTENING MEMBER Public/Granted day:2020-03-05
Information query
