Patent US3359956A successfully refreshed from Google Patents.
US3359956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor construction for rotary engines
Assignee: John Deere Technologies International Inc
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Filing: 1966-04-19
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Granted: 1967-12-26
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Expires: 1986-04-19
Abstract
No abstract record available.
Inventors
- 👤 Bentele Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:10
CPC Classifications
F; F02; F02B; F02B55/00; F02B55/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
IN A ROTARY COMBUSTION ENGINE, A ROTOR SUPPORTED IN A HOLLOW OUTER BODY FOR RELATIVE ROTATION THEREWITH, SAID ROTOR INCLUDING A PERIPHERAL WALL HAVING AN OUTER PERIPHERAL SURFACE WITH SAID OUTER PERIPHERAL SURFACE BEING PERIODICALLY EXPOSED TO COMBUSTION TEMPERATURES DURING RELATIVE ROTATION OF SAID ROTOR; AND SAID OUTER PERIPHERAL SURFACE INCLUDING A COATING DISPOSED ON AT LEAST A PORTION OF SAID ROTOR PERIPHERAL WALL WITH COATING BEING COMPOSED OF A MATERIAL HAVING A RELATIVELY LOW THERMAL CONDUCTIVITY FOR MINIMIZING HEAT TRANSFER TO SAID ROTOR OUTER PERIPHERAL WALL SURFACE SUCH THAT THE EFFECTIVE TEMPERATURE OF THE OUTER SURFACE OF SAID ROTOR MAY BE INCREASED WITHOUT SUBSTANTIALLY INCREASING THE TEMPERATURE OF THE ROTOR INTERIOR.
Claim 2
Dependent Claim
112 words
IN A ROTARY COMBUSTION ENGINE, A ROTOR SUPPORTED IN A HOLLOW OUTER BODY FOR RELATIVE ROTATION THEREWITH, SAID ROTOR INCLUDING A PERIPHERAL WALL HAVING AN OUTER PERIPHERAL SURFACE WITH SAID OUTER PERIPHERAL SURFACE BEING PERIODICALLY EXPOSED TO COMBUSTION TEMPERATURES DURING RELATIVE ROTATION OF SAID ROTOR; AND SAID OUTER PERIPHERAL SURFACE INCLUDING A COATING DISPOSED ON AT LEAST A PORTION OF SAID ROTOR PERIPHERAL WALL WITH COATING BEING COMPOSED OF A MATERIAL HAVING A RELATIVELY LOW THERMAL CONDUCTIVITY FOR MINIMIZING HEAT TRANSFER TO SAID ROTOR OUTER PERIPHERAL WALL SURFACE SUCH THAT THE EFFECTIVE TEMPERATURE OF THE OUTER SURFACE OF SAID ROTOR MAY BE INCREASED WITHOUT SUBSTANTIALLY INCREASING THE TEMPERATURE OF THE ROTOR INTERIOR.
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) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |