Patent US3285235A successfully refreshed from Google Patents.
US3285235A
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Valve seat insert
Assignee: General Electric Co
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Filing: 1964-12-24
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Granted: 1966-11-15
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Expires: 1984-12-24
Abstract
No abstract record available.
Inventors
- 👤 Hubert J Ueberschaer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:31
CPC Classifications
F; F01; F01L; F01L3/00; F01L3/22; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49298; Y10T29/49306
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A VALVE SEAT INSERT FOR AN INTERNAL COMBUSTION ENGINE COMPRISING: A CYLINDRICAL METAL RING HAVING A VALVE SEAT FORMED IN ONE END THEREOF, SAID CYLINDRICAL METAL RING BEING ADAPTED TO BE SEATED INTO A COUNTERBORE OF AN ENGINE VALVE PORT WITH AT LEAST A LINE-TO-LINE AND NO GREATER THAN A LIGHT INTERFERENCE FIT; AND AN INTEGRAL ANNULAR FLANGE PROXIMATE THE END OF SAID RING REMOTE FROM SAID VALVE SEAT AND HAVING AN OUTSIDE DIAMETER GREATER THAN THE INSIDE DIAMETER OF SAID COUNTERBORE WITH WHICH IT IS ASSOCIATED SO THAT SAID FLANGE AFTER BEING FORCED THROUGH SAID COUNTERBORE IS ADAPTED TO ENGAGE AN ANNULAR GROOVE IN THE BASE OF SAID COUNTERBORE TO PREVENT SAID RING FROM FALLING OUT OF ITS POSITION WHILE ALLOWING FOR THE NON-DESTRUCTIVE REMOVAL THEREOF FROM SAID COUNTERBORE.
Claim 2
Dependent Claim
130 words
A VALVE SEAT INSERT FOR AN INTERNAL COMBUSTION ENGINE COMPRISING: A CYLINDRICAL METAL RING HAVING A VALVE SEAT FORMED IN ONE END THEREOF, SAID CYLINDRICAL METAL RING BEING ADAPTED TO BE SEATED INTO A COUNTERBORE OF AN ENGINE VALVE PORT WITH AT LEAST A LINE-TO-LINE AND NO GREATER THAN A LIGHT INTERFERENCE FIT; AND AN INTEGRAL ANNULAR FLANGE PROXIMATE THE END OF SAID RING REMOTE FROM SAID VALVE SEAT AND HAVING AN OUTSIDE DIAMETER GREATER THAN THE INSIDE DIAMETER OF SAID COUNTERBORE WITH WHICH IT IS ASSOCIATED SO THAT SAID FLANGE AFTER BEING FORCED THROUGH SAID COUNTERBORE IS ADAPTED TO ENGAGE AN ANNULAR GROOVE IN THE BASE OF SAID COUNTERBORE TO PREVENT SAID RING FROM FALLING OUT OF ITS POSITION WHILE ALLOWING FOR THE NON-DESTRUCTIVE REMOVAL THEREOF FROM SAID COUNTERBORE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |