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US3333763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing arrangement for rotary engines
Assignee: Audi AG
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Filing: 1967-01-30
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Granted: 1967-08-01
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Expires: 1987-01-30
Abstract
No abstract record available.
Inventors
- 👤 Jungbluth Georg
- 👤 Autrum Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:09
CPC Classifications
F; F01; F01C; F01C19/00; F01C19/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A ROTARY COMBUSTION ENGING COMPRISING: A HOUSING HAVING AXIALLY SPACED END WALLS INTERCONNECTED BY A PRIPHERAL WALL TO FORM A CAVITY THEREIN; A SHAFT EXTENDING THROUGH AND ROTATABLY MOUNTED IN THE HOUSING, THE SHAFT HAVING AN ECCENTRIC PORTION DISPOSED WITHIN THE CAVITY; A ROTOR SUPPORT COAXIALLY ON THE ECCENTRIC PORTION FOR ROTATION RELATIVE TO THE ECCENTRIC PORTION AND THE HOUSING; THE ROTOR IN COMBINATION WITH THE HOUSING WALLS FORMING A PLURALITY OF VARIABLE VOLUME WORKING CHAMBERS; THE ROTOR HAVING A CYLINDRICAL INNER SURFACE COAXIAL WITH THE AXIS OF THE ECCENTRIC PORTION; THE ROTOR, THE SHAFT, AND THE HOUSING TOGETHER HAVING PASSAGES FOR THE CIRCULATION OF OIL, THE PASSAGES IN COMMUNICATION WITH THE CYLINDRICAL SURFACE OF THE ROTOR; AND AN OIL SEALING ARRANGEMENT FOR RECTRICTING OIL FROM ENTERING THE WORKING CHAMBERS, COMPRISING: AT LEAST ONE ANNULAR, RAIDALLY EXPANDING SEAL ABOUT
Claim 2
Dependent Claim
139 words
A ROTARY COMBUSTION ENGING COMPRISING: A HOUSING HAVING AXIALLY SPACED END WALLS INTERCONNECTED BY A PRIPHERAL WALL TO FORM A CAVITY THEREIN; A SHAFT EXTENDING THROUGH AND ROTATABLY MOUNTED IN THE HOUSING, THE SHAFT HAVING AN ECCENTRIC PORTION DISPOSED WITHIN THE CAVITY; A ROTOR SUPPORT COAXIALLY ON THE ECCENTRIC PORTION FOR ROTATION RELATIVE TO THE ECCENTRIC PORTION AND THE HOUSING; THE ROTOR IN COMBINATION WITH THE HOUSING WALLS FORMING A PLURALITY OF VARIABLE VOLUME WORKING CHAMBERS; THE ROTOR HAVING A CYLINDRICAL INNER SURFACE COAXIAL WITH THE AXIS OF THE ECCENTRIC PORTION; THE ROTOR, THE SHAFT, AND THE HOUSING TOGETHER HAVING PASSAGES FOR THE CIRCULATION OF OIL, THE PASSAGES IN COMMUNICATION WITH THE CYLINDRICAL SURFACE OF THE ROTOR; AND AN OIL SEALING ARRANGEMENT FOR RECTRICTING OIL FROM ENTERING THE WORKING CHAMBERS, COMPRISING: AT LEAST ONE ANNULAR, RAIDALLY EXPANDING SEAL ABOUT
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |