Internal-combustion engines – Valve – Valve head cooperates with manifold
Patent
1987-10-14
1989-05-30
Shoap, Allan N.
Internal-combustion engines
Valve
Valve head cooperates with manifold
277152, 277189, 277206A, 277212C, 277227, 277DIG6, F01L 308, F16J 1532, F16J 1556
Patent
active
048340375
ABSTRACT:
A unitary molded valve seal assembly includes a plastic body and an elastomeric seal which is molded in-situ within the plastic body. The plastic seal body preferably fabricated of Hytrel plastic and includes a plurality of obliquely oriented ribs or lips on its inside surface which seal against an engine valve guide. The elastomeric seal is preferably fabricated of Viton rubber and defines an irregular surface having curved regions which retain it within the seal body and a pair of spaced apart lips which sealingly engage the value stem.
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Dana Corporation
Shoap Allan N.
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