Invention Grant
- Patent Title: Hollow shaft member and rolling device
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Application No.: US17601154Application Date: 2020-03-10
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Publication No.: US11959516B2Publication Date: 2024-04-16
- Inventor: Toru Takahashi , Junzo Shimbe , Hidetada Suzuki
- Applicant: THK CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: THK CO., LTD.
- Current Assignee: THK CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: WHDA, LLP
- Priority: JP 19072503 2019.04.05
- International Application: PCT/JP2020/010252 2020.03.10
- International Announcement: WO2020/203090A 2020.10.08
- Date entered country: 2021-10-04
- Main IPC: F16C3/02
- IPC: F16C3/02 ; B21D41/04 ; B21D51/10 ; B21D53/10 ; F16C29/06

Abstract:
This hollow shaft member 10 includes paired diameter-reduced sections 11 respectively formed at both shaft ends of a hollow shaft-like tubular material by performing swaging processing on both the shaft ends, and an intermediate section 12 located between the paired diameter-reduced sections, and having an outer diameter larger than an outer diameter of the paired diameter-reduced sections. Shapes of connection boundaries between the intermediate section 12 and the diameter-reduced sections 11 are formed as perpendicular step-shaped sections 13 stepped substantially perpendicular to an axial direction, and the perpendicular step-shaped sections 13 are formed by the swaging processing.
Public/Granted literature
- US20220178401A1 HOLLOW SHAFT MEMBER AND ROLLING DEVICE Public/Granted day:2022-06-09
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