Two-piece valve stem seal

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9500106
APP PUB NO 20100295252A1
SERIAL NO

12469195

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Importance

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Abstract

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A valve stem seal utilizes a multi-piece construction to reduce the required manufactured tolerances and/or improve the stress handling capabilities. The valve stem seal can include a first member or can which can be assembled to a second member or spring seat. The can and/or spring seat can have a plurality of axially extending resilient fingers that are biased such that when assembled the fingers are bent against the bias due to the engagement between the can and the spring seat. The fingers on the spring seat allow the spring seat to bend or move relative to the can to accommodate the loading of a valve spring on the spring seat. The use of resilient fingers on the can and/or the spring seat reduces the manufacturing tolerances required for the valve stem seal.

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Patent Owner(s)

Patent OwnerAddress
FREUDENBERG-NOK GENERAL PARTNERSHIP47690 E ANCHOR COURT PLYMOUTH MI 48170-2455

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
London, John A Cornelia, US 9 38
Pawl, Rory S Waterford, US 7 26
Scheib, Patrick L Cornelia, US 16 59

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