Two-piece valve stem seal

Details Two-piece valve stem seal Two-piece valve stem seal

1995-11-14

1996-09-24

Solis, Erick R.

Internal-combustion engines

Valve

Packing

F01L 308

Patent

active

055580564

ABSTRACT:
An improved valve stem seal assembly for use in an internal combustion engine, including a rigid cylindrical shell having a flange portion and a seal retainer wall at the top portion. The valve stem seal assembly also includes a seal body having an integral spring molded within the body. The seal body having at least one annular lip to engage a reciprocating valve stem and a ridge or lip on the bottom portion of the seal body to engage and center the seal body in its proper position on the valve guide. The seal body being disposed within the rigid shell to form a valve stem seal assembly.

REFERENCES:
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patent: 2207400 (1940-07-01), Gass
patent: 2418674 (1947-04-01), Steiner
patent: 3162185 (1964-12-01), Knoblock
patent: 3306621 (1967-02-01), Fisher
patent: 3554180 (1971-01-01), Lesser
patent: 3554182 (1971-01-01), Whitacre
patent: 3554562 (1971-01-01), Davis, Jr.
patent: 4798181 (1989-01-01), Beer et al.
patent: 4822061 (1989-04-01), Kammeraad
patent: 4909202 (1990-03-01), Binford et al.
patent: 4919090 (1990-04-01), Deuring et al.
patent: 4947811 (1990-08-01), Binford

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