Two-piece valve stem seal
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Nov 22, 2016
Grant Date -
Nov 25, 2010
app pub date -
May 20, 2009
filing date -
May 20, 2009
priority date (Note) -
In Force
status (Latency Note)
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Abstract
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.
First Claim
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Family
- No Family data available.
International Classification(s)
- 2009 Application Filing Year
- F01L Class
- 329 Applications Filed
- 210 Patents Issued To-Date
- 63.83 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 2 Citation Count
- F01L Class
- 15.12 % this patent is cited more than
- 9 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 22, 2028 |
