Patent US3165259A successfully refreshed from Google Patents.
US3165259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary piston internal combustion engine
Assignee: Daimler Benz AG
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Filing: 1962-03-14
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Granted: 1965-01-12
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Expires: 1982-03-14
Abstract
No abstract record available.
Inventors
- 👤 Alfred H Muller
- 👤 Muller Eberhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:02
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/06; F01C19/00; F01C19/08; F01C19/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
AN OIL SEAL CONSTRUCTION DISPOSED BETWEEN THE PISTON END WALLS AND THE LATERAL HOUSING WALLS OF ROTARY-PISTON INTERNAL COMBUSTION ENGINES, ESPECIALLY OF INTERNAL COMBUSTION ENGINES OF TROCHOIDAL CONSTRUCTION, COMPRISING ENGINE HOUSING MEANS INCLUDING LATERAL HOUSING WALLS, PISTON MEANS INCLUDING END WALLS AND PROVIDED WITH HUB PORTIONS, AND METALLIC SEALING DISK MEANS DISPOSED BETWEEN SAID PISTON END WALLS AND SAID LATERAL HOUSING WALLS AND OPERATIVELY CONNECTED RADIALLY INWARDLY THEREOF FOR COMMON ROTATION WITH THE HUB PORTIONS OF PISTON MEANS, SAID SEALING DISK MEANS BEING PROVIDED AT THE RADIAL EDGES THEREOF ON A RELATIVELY LARGE DIAMETER WITH SEALING EDGE MEANS SEALINGLY ABUTTING SUBSTANTIALLY IN THE AXIAL DIRECTION AGAINST SAID LATERAL HOUSING WALLS, AND THE WALL THICKNESS OF SAID SEALING DISK MEANS DECREASING PROGRESSIVELY IN THE RADIALLY OUTWARD DIRECTION.
Claim 2
Dependent Claim
126 words
AN OIL SEAL CONSTRUCTION DISPOSED BETWEEN THE PISTON END WALLS AND THE LATERAL HOUSING WALLS OF ROTARY-PISTON INTERNAL COMBUSTION ENGINES, ESPECIALLY OF INTERNAL COMBUSTION ENGINES OF TROCHOIDAL CONSTRUCTION, COMPRISING ENGINE HOUSING MEANS INCLUDING LATERAL HOUSING WALLS, PISTON MEANS INCLUDING END WALLS AND PROVIDED WITH HUB PORTIONS, AND METALLIC SEALING DISK MEANS DISPOSED BETWEEN SAID PISTON END WALLS AND SAID LATERAL HOUSING WALLS AND OPERATIVELY CONNECTED RADIALLY INWARDLY THEREOF FOR COMMON ROTATION WITH THE HUB PORTIONS OF PISTON MEANS, SAID SEALING DISK MEANS BEING PROVIDED AT THE RADIAL EDGES THEREOF ON A RELATIVELY LARGE DIAMETER WITH SEALING EDGE MEANS SEALINGLY ABUTTING SUBSTANTIALLY IN THE AXIAL DIRECTION AGAINST SAID LATERAL HOUSING WALLS, AND THE WALL THICKNESS OF SAID SEALING DISK MEANS DECREASING PROGRESSIVELY IN THE RADIALLY OUTWARD DIRECTION.
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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) | 1968-01-12 | 1968-07-13 | 1969-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-12 | 1972-07-13 | 1973-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-12 | 1976-07-13 | 1977-01-12 | $7700.00 | Window Closed / Lapsed |