Patent US3286701A successfully refreshed from Google Patents.
US3286701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust port cooling structure for rotary engines
Assignee: Curtiss Wright Corp
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Filing: 1964-11-18
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Granted: 1966-11-22
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Expires: 1984-11-18
Abstract
No abstract record available.
Inventors
- 👤 Frederick A Kling
- 👤 Roland L Bowlby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:48
CPC Classifications
F; F02; F02B; F02B55/00; F02B55/08; F02B55/10; F02B55/12; F02B55/16; F02B53/00; F02B2053/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
AN OUTER BODY STRUCTURE FOR A ROTARY COMBUSTION ENGINE HAVING A PLURALITY OF WORKING CHAMBERS WHICH CARRY A WORKING FLUID AROUND THE OUTER BODY AXIS FOR COMBUSTION IN ONE REGION OF SAID OUTER BODY AND FOR DISCHARGE OF THE COMBUSTION GASES IN A SECOND REGION OF SAID OUTER BODY; SAID OUTER BODY STRUCTURE INCLUDING A PERIPHERAL WALL HAVING AN EXHAUST PORT FORMED THEREIN IN SAID SECOND REGION OF SAID OUTER BODY, AIR COOLING MEANS FOR THE WALLS OF SAID EXHAUST PORT INCLUDING A PLURALITY OF ENCLOSED PASSAGES PROVIDED IN SAID PERIPHERAL WALL WITH SAID PASSAGES BEING SPACED ALONG THE EXHAUST PORT AXIS AND DISPOSED BETWEEN THE INNER AND OUTER PERIPHERY OF SAID PERIPHERAL WALL, SAID PASSAGES BEING IN CLOSE PROXIMITY TO THE WALLS OF SAID EXHAUST PORT SO THAT SAID PASSAGES SURROUND A SUBSTANTIAL PORTION OF THE OUTER WALL OF SAID EXHAUST PORT AND SAID PASSAGES HAVING SUPPLY OPENING AT
Claim 2
Dependent Claim
150 words
AN OUTER BODY STRUCTURE FOR A ROTARY COMBUSTION ENGINE HAVING A PLURALITY OF WORKING CHAMBERS WHICH CARRY A WORKING FLUID AROUND THE OUTER BODY AXIS FOR COMBUSTION IN ONE REGION OF SAID OUTER BODY AND FOR DISCHARGE OF THE COMBUSTION GASES IN A SECOND REGION OF SAID OUTER BODY; SAID OUTER BODY STRUCTURE INCLUDING A PERIPHERAL WALL HAVING AN EXHAUST PORT FORMED THEREIN IN SAID SECOND REGION OF SAID OUTER BODY, AIR COOLING MEANS FOR THE WALLS OF SAID EXHAUST PORT INCLUDING A PLURALITY OF ENCLOSED PASSAGES PROVIDED IN SAID PERIPHERAL WALL WITH SAID PASSAGES BEING SPACED ALONG THE EXHAUST PORT AXIS AND DISPOSED BETWEEN THE INNER AND OUTER PERIPHERY OF SAID PERIPHERAL WALL, SAID PASSAGES BEING IN CLOSE PROXIMITY TO THE WALLS OF SAID EXHAUST PORT SO THAT SAID PASSAGES SURROUND A SUBSTANTIAL PORTION OF THE OUTER WALL OF SAID EXHAUST PORT AND SAID PASSAGES HAVING SUPPLY OPENING AT
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) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |