Patent US2007436A successfully refreshed from Google Patents.
Patent US3075505A successfully refreshed from Google Patents.
US3075505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Port construction for rotary combustion engine
Assignee: Wankel GmbH
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Filing: 1960-04-13
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Granted: 1963-01-29
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Expires: 1980-04-13
Abstract
No abstract record available.
Inventors
- 👤 Froede Walter
- 👤 Hoppner Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:59
CPC Classifications
F; F02; F02B; F02B55/00; F02B55/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A ROTATING INTERNAL COMBUSTION ENGINE HAVING A CYCLE WHICH INCLUDES THE FOUR PHASES OF INTAKE, A COMPRESSION, EXPANSION AND EXHAUST AND COMPRISING A HOLLOW OUTER BODY HAVING AN AXIS, AXIALLY-SPACED END WALLS, AND A PERIPHERAL WALL INTERCONNECTING THE END WALLS; A ROTOR MOUNTED WITHIN THE OUTER BODY ON AN AXIS ECCENTRIC TO THE AXIS OF THE OUTER BODY AND ROTATABLE RELATIVE TO THE OUTER BODY, THE ROTOR HAVING END FACES DISPOSED ADJACENT TO THE END WALLS AND A PLURALITY OF CIRCUMFERENTIALLY-SPACED APEX PORTIONS, SAID APEX PORTIONS HAVING APEX EDGES IN SUBSTANTIALLY CONTINUOUS SLIDING AND SEALING ENGAGEMENT WITH THE INNER SURFACE OF THE PERIPHERAL WALL TO FORM A PLURALITY OF WORKING CHAMBERS BETWEEN THE ROTOR AND PERIPHERAL WALL WHICH VARY IN VOLUME UPON RELATIVE ROTA-
Claim 2
Dependent Claim
124 words
A ROTATING INTERNAL COMBUSTION ENGINE HAVING A CYCLE WHICH INCLUDES THE FOUR PHASES OF INTAKE, A COMPRESSION, EXPANSION AND EXHAUST AND COMPRISING A HOLLOW OUTER BODY HAVING AN AXIS, AXIALLY-SPACED END WALLS, AND A PERIPHERAL WALL INTERCONNECTING THE END WALLS; A ROTOR MOUNTED WITHIN THE OUTER BODY ON AN AXIS ECCENTRIC TO THE AXIS OF THE OUTER BODY AND ROTATABLE RELATIVE TO THE OUTER BODY, THE ROTOR HAVING END FACES DISPOSED ADJACENT TO THE END WALLS AND A PLURALITY OF CIRCUMFERENTIALLY-SPACED APEX PORTIONS, SAID APEX PORTIONS HAVING APEX EDGES IN SUBSTANTIALLY CONTINUOUS SLIDING AND SEALING ENGAGEMENT WITH THE INNER SURFACE OF THE PERIPHERAL WALL TO FORM A PLURALITY OF WORKING CHAMBERS BETWEEN THE ROTOR AND PERIPHERAL WALL WHICH VARY IN VOLUME UPON RELATIVE ROTA-
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) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |