- 专利标题: Method for producing a hollow valve for internal combustion engines
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申请号: US17437762申请日: 2020-02-10
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公开(公告)号: US11813658B2公开(公告)日: 2023-11-14
- 发明人: Thorsten Matthias , Antonius Wolking , Johannes Knust
- 申请人: FEDERAL-MOGUL VALVETRAIN GMBH
- 申请人地址: DE Barsinghausen
- 专利权人: Federal-Mogul Valvetrain GmbH
- 当前专利权人: Federal-Mogul Valvetrain GmbH
- 当前专利权人地址: DE Barsinghausen
- 代理机构: Dickinson Wright PLLC
- 代理商 Robert L. Stearns
- 优先权: DE 2019106214.4 2019.03.12
- 国际申请: PCT/EP2020/053348 2020.02.10
- 国际公布: WO2020/182387A 2020.09.17
- 进入国家日期: 2021-09-09
- 主分类号: B21D53/84
- IPC分类号: B21D53/84 ; B21K1/22 ; F01L3/20 ; B21D51/10 ; B23P15/00
摘要:
A method for producing a valve body of a hollow valve includes providing a workpiece blank or semi-finished product, spin extruding the workpiece to produce a preform having a cup with a hollow shape formed by the cup wall. A hollow valve produced by this method is also provided.
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