发明授权
- 专利标题： Valve spring retainer for an internal combustion engine and a method of manufacturing the same
- 专利标题（中）： 用于内燃机的阀弹簧保持器及其制造方法
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申请号： US13265125申请日： 2010-04-27
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公开(公告)号： US08899200B2公开(公告)日： 2014-12-02
- 发明人: Takayuki Aoki , Takeshi Sassa
- 申请人： Takayuki Aoki , Takeshi Sassa
- 申请人地址： JP Shizuoka
- 专利权人： Fuji Oozx Inc.
- 当前专利权人： Fuji Oozx Inc.
- 当前专利权人地址： JP Shizuoka
- 代理机构： Zarley Law Firm, P.L.C.
- 国际申请： PCT/JP2010/057477 WO 20100427
- 国际公布： WO2011/135676 WO 20111103
- 主分类号： F01L3/10
- IPC分类号： F01L3/10 ; F01L1/46 ; F16F1/12
摘要：
Oxide film formed on a spring-retaining flange by heat treatment gets unlikely to peel off, thereby improving wear resistance of a contact surface of the spring-retaining flange with a valve spring. The oxide film 15 of the part of the spring-retaining flange 3 with the valve spring 7 is at least partially removed to make thickness of the oxide film to 0.00 to 0.02 μm.