An ultra light poppet valve (10) for an internal combustion engine. The valve is formed by cold forming a blank (12a) into an elongated cup having an extremely thin wall and a flared open end onto which a cap is welded, the bottom end (16) of the cup which defines the tip end of the valve having a wall section which is substantially of the thickness of the original blank. In accordance with one aspect of the invention, a keeper groove (26) is formed adjacent the tip end as part of the cold forming process. <IMAGE> <IMAGE>
申请公布号
DE69403843(T2)
申请公布日期
1998.01.29
申请号
DE1994603843T
申请日期
1994.03.23
申请人
EATON CORP., CLEVELAND, OHIO, US
发明人
LARSON, JAY MICHAEL, MARSHALL, MICHIGAN 49068, US;BONESTEEL, DAVID LOUIS, RICHLAND, MICHIGAN 49083, US