US3115125A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine cooling system
Assignee: Individual
•
Filing: 1961-09-25
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Granted: 1963-12-24
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Expires: 1981-09-25
Abstract
No abstract record available.
Inventors
- 👤 Charles O Spencer
- 👤 Boyd L Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:48
CPC Classifications
F; F01; F01L; F01L3/00; F01L3/12; F01L3/22; F01P; F01P3/00; F01P3/12; F01P3/14; F02; F02F; F02F1/00; F02F1/02; F02F1/10; F02F1/16; F02F1/166; F02F1/24; F02F1/26; F02F1/36; F02F1/40; F02F2001/244; F02F2001/247
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
IN AN INTERNAL COMBUSTION ENGINE, A CYLINDER BLOCK PROVIDED WITH A CYLINDER BORE, A CYLINDER HEAD ATTACHED TO SAID BLOCK OVER SAID BORE, SAID HEAD BEING RECESSED IN AN AREA THEREOF OVER SAID BORE, AND AN INSERT REMOVABLY MOUNTED IN SAID RECESS, SAID INSERT BEING HOLLOW AND HAVING INLET AND OUTLET MEANS CONNECTED THERETO LEADING EXTERNALLY OF SAID CYLINDER HEAD FOR CONNECTION TO AN EXTERNAL COOLANT SUPPLY SYSTEM, SAID HEAD HAVING INTAKE AND EXHAUST VALVE PORTS LEADING TO SAID INSERT, SAID INSERT HAVING PASSAGES THERETHROUGH EFFECTING CONTINUATION OF SAID VALVE PORTS, SAID INSERT HAVING DIVIDER MEANS THEREIN PROVIDING COMMUNICATING CHAMBERS INDIVIDUALLY CONTAINING THE INSERT WALLS FORMING SAID PASSAGES, SAID INLET AND OUTLET MEANS COMMUNICATING RESPECTIVELY WITH SAID CHAMBERS, SAID EXHAUST PASSAGE WALL TRAVERSING AND SAID COOLANT INLET MEANS BEING IN COMMUNICATION WITH THE SAME CHAMBER WITHIN SAID INSERT.
Claim 2
Dependent Claim
138 words
IN AN INTERNAL COMBUSTION ENGINE, A CYLINDER BLOCK PROVIDED WITH A CYLINDER BORE, A CYLINDER HEAD ATTACHED TO SAID BLOCK OVER SAID BORE, SAID HEAD BEING RECESSED IN AN AREA THEREOF OVER SAID BORE, AND AN INSERT REMOVABLY MOUNTED IN SAID RECESS, SAID INSERT BEING HOLLOW AND HAVING INLET AND OUTLET MEANS CONNECTED THERETO LEADING EXTERNALLY OF SAID CYLINDER HEAD FOR CONNECTION TO AN EXTERNAL COOLANT SUPPLY SYSTEM, SAID HEAD HAVING INTAKE AND EXHAUST VALVE PORTS LEADING TO SAID INSERT, SAID INSERT HAVING PASSAGES THERETHROUGH EFFECTING CONTINUATION OF SAID VALVE PORTS, SAID INSERT HAVING DIVIDER MEANS THEREIN PROVIDING COMMUNICATING CHAMBERS INDIVIDUALLY CONTAINING THE INSERT WALLS FORMING SAID PASSAGES, SAID INLET AND OUTLET MEANS COMMUNICATING RESPECTIVELY WITH SAID CHAMBERS, SAID EXHAUST PASSAGE WALL TRAVERSING AND SAID COOLANT INLET MEANS BEING IN COMMUNICATION WITH THE SAME CHAMBER WITHIN SAID INSERT.
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) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |