Valve stem seal

Details Valve stem seal Valve stem seal

1988-03-07

1989-03-14

Cross, E. Rollins

Internal-combustion engines

Valve

Valve head cooperates with manifold

277152, F01L 308

Patent

active

048117048

ABSTRACT:
A valve stem seal for an intake or an exhaust valve in an internal combustion engine consists of an elastomeric portion, an insert and a retaining member. The elastomeric portion and insert are interconnected and the elastomeric portion has a cylindrical wall engaging the valve stem. Both the elastomeric portion and insert portion are positioned on the top surface of the valve guide boss and retained thereon by a retaining member which engages the boss.

REFERENCES:
patent: 3480286 (1969-11-01), Kosatka
patent: 3498621 (1970-03-01), Wilson
patent: 4125265 (1978-11-01), Grzesiak
patent: 4198062 (1980-04-01), Grzesiak
patent: 4317436 (1982-03-01), Barnhart et al.
patent: 4531483 (1985-07-01), Vossieck et al.

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