US3127880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for cooling the exhaust port wall in a poppet valve internal combustion engine
Assignee: MAN AG
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Filing: 1963-08-29
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Granted: 1964-04-07
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Expires: 1983-08-29
Abstract
No abstract record available.
Inventors
- 👤 Meurer Siegfried
- 👤 Barner Klaus Henning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:43
CPC Classifications
F; F01; F01L; F01L3/00; F01L3/12; F01P; F01P3/00; F01P3/12; F01P3/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
IN AN INTERNAL COMBUSTION ENGINE HAVING AN INTAKE POPPET VALVE, AN EXHAUST POPPET VALVE, A VALVE PORT WEB BETWEEN THESE VALVES, AND AT LEAST ONE AIR PASSAGEWAY THROUGH SAID WEB FOR BRINGING COOLING INTAKE AIR INTO CONTACT WITH THE WALL OF THE EXHAUST VALVE PORT, THE IMPROVEMENT COMPRISING A FIRST GUIDE ELEMENT ADJACENT THE INTAKE OPENING INTO SAID PASSAGEWAY FOR SCOOPING INTAKE AIR INTO SAID PASSAGEWAY, AND A SECOND GUIDE ELEMENT ADJACENT THE AIR OUTLET END OF SAID PASSAGEWAY FOR DISCHARGING AIR FROM SAID PASSAGEWAY IN THE DIRECTION OF THE EXHAUST GAS FLOW THROUGH THE EXHAUST VALVE PORT.
Claim 2
Dependent Claim
98 words
IN AN INTERNAL COMBUSTION ENGINE HAVING AN INTAKE POPPET VALVE, AN EXHAUST POPPET VALVE, A VALVE PORT WEB BETWEEN THESE VALVES, AND AT LEAST ONE AIR PASSAGEWAY THROUGH SAID WEB FOR BRINGING COOLING INTAKE AIR INTO CONTACT WITH THE WALL OF THE EXHAUST VALVE PORT, THE IMPROVEMENT COMPRISING A FIRST GUIDE ELEMENT ADJACENT THE INTAKE OPENING INTO SAID PASSAGEWAY FOR SCOOPING INTAKE AIR INTO SAID PASSAGEWAY, AND A SECOND GUIDE ELEMENT ADJACENT THE AIR OUTLET END OF SAID PASSAGEWAY FOR DISCHARGING AIR FROM SAID PASSAGEWAY IN THE DIRECTION OF THE EXHAUST GAS FLOW THROUGH THE EXHAUST VALVE PORT.
References Cited (Backward Citations)
GB548101A
Cited
US2816530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |