Patent US3274980A successfully refreshed from Google Patents.
US3274980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary piston internal combustion engine
Assignee: Kloeckner Humboldt Deutz AG
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Filing: 1963-08-23
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Granted: 1966-09-27
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Expires: 1983-08-23
Abstract
No abstract record available.
Inventors
- 👤 Abermeth Hubert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:42
CPC Classifications
F; F01; F01C; F01C1/00; F01C1/02; F01C1/063; F01C1/077; F02; F02B; F02B53/00; F02B2730/00; F02B2730/03; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
IN A ROTARY PISTON MACHINE, ESPECIALLY ROTARY PISTON INTERNAL COMBUSTION ENGINE: A ROTATABLE SHAFT WITH AN ECCENTRIC, A PISTON JOURNALLED ON SAID ECCENTRIC AND PROVIDED WITH FIRST GEAR MEANS, HOUSING MEANS SURROUNDING SAID PISTON AND PROVIDED WITH SECOND GEAR MEANS, AND A GEAR SET SUPPORTED BY SAID ECCENTRIC AND COMPRISING TWO PINIONS RESPECTIVELY MESHING WITH SAID FIRST AND SECOND GEAR MEANS, SAID GEAR SET ALSO INCLUDING TORSION SPRING MEANS INTERCONNECTING SAID PINIONS.
Claim 2
Dependent Claim
72 words
IN A ROTARY PISTON MACHINE, ESPECIALLY ROTARY PISTON INTERNAL COMBUSTION ENGINE: A ROTATABLE SHAFT WITH AN ECCENTRIC, A PISTON JOURNALLED ON SAID ECCENTRIC AND PROVIDED WITH FIRST GEAR MEANS, HOUSING MEANS SURROUNDING SAID PISTON AND PROVIDED WITH SECOND GEAR MEANS, AND A GEAR SET SUPPORTED BY SAID ECCENTRIC AND COMPRISING TWO PINIONS RESPECTIVELY MESHING WITH SAID FIRST AND SECOND GEAR MEANS, SAID GEAR SET ALSO INCLUDING TORSION SPRING MEANS INTERCONNECTING SAID PINIONS.
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |