Invention Grant
- Patent Title: Valve spring retainer for an internal combustion engine and a method of manufacturing the same
- Patent Title (中): 用于内燃机的阀弹簧保持器及其制造方法
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Application No.: US13265125Application Date: 2010-04-27
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Publication No.: US08899200B2Publication Date: 2014-12-02
- Inventor: Takayuki Aoki , Takeshi Sassa
- Applicant: Takayuki Aoki , Takeshi Sassa
- Applicant Address: JP Shizuoka
- Assignee: Fuji Oozx Inc.
- Current Assignee: Fuji Oozx Inc.
- Current Assignee Address: JP Shizuoka
- Agency: Zarley Law Firm, P.L.C.
- International Application: PCT/JP2010/057477 WO 20100427
- International Announcement: WO2011/135676 WO 20111103
- Main IPC: F01L3/10
- IPC: F01L3/10 ; F01L1/46 ; F16F1/12
Abstract:
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.
Public/Granted literature
- US20120132841A1 VALVE SPRING RETAINER FOR AN INTERNAL COMBUSTION ENGINE AND A METHOD OF MANUFACTURING THE SAME Public/Granted day:2012-05-31
Information query
