US3179331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Annular side seal for rotors of rotary engines
Assignee: Wankel GmbH
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Filing: 1964-02-24
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Granted: 1965-04-20
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Expires: 1984-02-24
Abstract
No abstract record available.
Inventors
- 👤 Paschke Hanns-Dieter
- 👤 Maurhoff Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:33
CPC Classifications
F; F01; F01C; F01C19/00; F01C19/08; F01C19/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
ANNULAR SIDE SEAL FOR HOUSED ROTORS OF ROTARY MECHANISMS, SAID SEAL BEING INSERTED IN AN END FACE OF THE ROTOR AND ADAPTED TO SLIDE ALONG THE ADJACENT END WALL OF THE ROTOR HOUSING, SAID SEAL SERVING TO DIVIDE THE SPACE BE TWEEN SAID ROTOR END FACE AND THE HOUSING END WALL INTO TWO ANNULAR SPACES OF WHICH THE RADIALLY INNER SPACE CONTAINS LUBRICATING MEANS AND THE RADIALLY OUTER SPACE CONTAINS WORKING FLUID, THE ANNULAR SEAL COMPRISING AN ANNU-
Claim 2
Dependent Claim
78 words
ANNULAR SIDE SEAL FOR HOUSED ROTORS OF ROTARY MECHANISMS, SAID SEAL BEING INSERTED IN AN END FACE OF THE ROTOR AND ADAPTED TO SLIDE ALONG THE ADJACENT END WALL OF THE ROTOR HOUSING, SAID SEAL SERVING TO DIVIDE THE SPACE BE TWEEN SAID ROTOR END FACE AND THE HOUSING END WALL INTO TWO ANNULAR SPACES OF WHICH THE RADIALLY INNER SPACE CONTAINS LUBRICATING MEANS AND THE RADIALLY OUTER SPACE CONTAINS WORKING FLUID, THE ANNULAR SEAL COMPRISING AN ANNU-
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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |