发明授权
- 专利标题： Valve guide
- 专利标题（中）： 阀门指导
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申请号： US584124申请日： 1990-09-18
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公开(公告)号： US5062908A公开(公告)日： 1991-11-05
- 发明人: Charles G. Purnell , Andrew R. Baker
- 申请人： Charles G. Purnell , Andrew R. Baker
- 申请人地址： GB2 Coventry
- 专利权人： Brico Engineering Limited
- 当前专利权人： Brico Engineering Limited
- 当前专利权人地址： GB2 Coventry
- 优先权： GBX8921826 19890927
- 主分类号： B22F3/26
- IPC分类号： B22F3/26 ; B22F5/12 ; C22C33/02 ; C22C38/00 ; C22C38/16 ; C22F1/00 ; C22F1/08 ; F01L3/08
摘要：
A valve guide and a method for the manufacture thereof are described. The valve guide is a tubular article having a length to outer diameter ratio greater than about 1.5 and is made of a ferrous material by a PM route. The pressed guide is infiltrated by preparing a sheet of the infiltrant alloy, rolling the sheet into a cylinder and inserting it into the guide bore followed preferably by, simultaneous sintering and infiltration.
公开/授权文献
- US5793100A Lead frame for semiconductor device 公开/授权日：1998-08-11
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