US3289646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder-heads for rotary engines
Assignee: Renault SA
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Filing: 1964-06-25
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Granted: 1966-12-06
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Expires: 1984-06-25
Abstract
No abstract record available.
Inventors
- 👤 Peras Lucien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:41
CPC Classifications
F; F02; F02B; F02B55/00; F02B55/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
INPROVEMENTS IN CYLINDER-HEADS OF ROTARY ENGINES HAVING A ROTOR WITH N-LOBES ROTATING ECCENTRICALLY IN A STATOR WITH N+1 LOBES FORMING N+1 WORKING CHAMBERS, WITH WHICH ARE RESPECTIVELY ASSOCIATED COMBUSTION CHAMBERS INTO WHICH THE VALVES OPEN, CHARACTERIZED IN THAT IN THE FLUSHING SURFACE OF THE CYLINDER-HEADS ASSOCIATED WITH EACH WORKING CHAMBER ARE PROVIDED HOLLOWED OUT PORTIONS OPENING INTO THE COMBUSTION CHAMBERS, THESE HOLLOW PORTIONS HAVING A SHAPE SUCH THAT THE AIR WHICH IS COMPRESSED BETWEEN THE SURFACE OF THE ROTOR AND THE SAID FLUSHING SURFACE IS CHANNELLED BY THE HOLLOWS AND FLOWS THROUGH
Claim 2
Dependent Claim
92 words
INPROVEMENTS IN CYLINDER-HEADS OF ROTARY ENGINES HAVING A ROTOR WITH N-LOBES ROTATING ECCENTRICALLY IN A STATOR WITH N+1 LOBES FORMING N+1 WORKING CHAMBERS, WITH WHICH ARE RESPECTIVELY ASSOCIATED COMBUSTION CHAMBERS INTO WHICH THE VALVES OPEN, CHARACTERIZED IN THAT IN THE FLUSHING SURFACE OF THE CYLINDER-HEADS ASSOCIATED WITH EACH WORKING CHAMBER ARE PROVIDED HOLLOWED OUT PORTIONS OPENING INTO THE COMBUSTION CHAMBERS, THESE HOLLOW PORTIONS HAVING A SHAPE SUCH THAT THE AIR WHICH IS COMPRESSED BETWEEN THE SURFACE OF THE ROTOR AND THE SAID FLUSHING SURFACE IS CHANNELLED BY THE HOLLOWS AND FLOWS THROUGH
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |