Patent US3313277A successfully refreshed from Google Patents.
US3313277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid cooled valve for internal combustion engines
Assignee: Individual
•
Filing: 1966-06-07
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Granted: 1967-04-11
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Expires: 1986-06-07
Abstract
No abstract record available.
Inventors
- 👤 Adolfsson Rune Gerren
- 👤 Haagen Thomas Eugen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:26
CPC Classifications
F; F01; F01P; F01P3/00; F01P3/12; F01P3/14; F01L; F01L3/00; F01L3/12; F01L3/16; F01L3/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
105 words
A LIQUID COOLED DISK LIKE VALVE FOR AN INTERNAL COMBUSTION ENGINE COMPRISING IN COMBINATION: (A) A HOLLOW VALVE STEM, (B) A VALVE HEAD MOUNTED ON SAID STEM, THE INNER WALLS OF SAID VALVE DEFINING A COOLING CHAMBER, (C) AN ANNULAR INSULATING JACKET COAXIALLY MOUNTED WITHIN SAID VALVE STEM AND ADJACENT TO THE INNER WALLS OF SAID VALVE STEM, AND (D) A COOLANT SUPPLY TUBE COAXIALLY MOUNTED WITHIN SAID INSULATING JACKET TO SUPPLY A COOLANT TO SAID VALVE HEAD, THE EXTERIOR WALL OF SAID SUPPLY TUBE AND THE INTERIOR WALL OF SAID INSULATING JACKET DEFINING AN ANNULAR RETURN PASSAGE FOR A COOLANT FROM SAID VALVE HEAD,
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) | 1970-04-10 | 1970-10-10 | 1971-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-10 | 1974-10-10 | 1975-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-10 | 1978-10-10 | 1979-04-11 | $7700.00 | Window Closed / Lapsed |