Patent US3220388A successfully refreshed from Google Patents.
US3220388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary internal combustion engine
Assignee: Individual
•
Filing: 1963-06-21
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Granted: 1965-11-30
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Expires: 1983-06-21
Abstract
No abstract record available.
Inventors
- 👤 George H Trotter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:18
CPC Classifications
F; F02; F02B; F02B53/00; F02B75/00; F02B75/02; F02B2075/022; F02B2075/027; F02B2730/00; F02B2730/01; F02B2730/015; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A ROTARY INTERNAL COMBUSTION ENGINE COMPRISING A CYLINDRICAL HOUSING, AN AXIAL DRIVE SHAFT JOURNALED ACROSS THE HOUSING AND HAVING A CRANK THROW WITHIN THE HOUSING, A CYLINDRICAL ROTOR SMALLER IN DIAMETER AND AXIALLY JOURNALED ON THE THROW, SAID HOUSING HAVING A CYLINDRICAL PERIPHERAL SIDE WALL AGAINST WHICH THE PERIPHERAL EDGE OF THE ROTOR IS IN ROLLING CONTACT, SAID SIDE WALL HAVING A RADIAL EXTENSION DEFINING A COMBUSTION CHAMBER, MEANS CONNECTED TO THE CHAMBER FOR INTRODUCING FUEL THEREIN, IGNITING MEANS IN THE CHAMBER FOR IGNITING A MIXTURE OF FUEL AND AIR THEREIN, SAID HOUSING SIDE WALL HAVING EX-
Claim 2
Dependent Claim
97 words
A ROTARY INTERNAL COMBUSTION ENGINE COMPRISING A CYLINDRICAL HOUSING, AN AXIAL DRIVE SHAFT JOURNALED ACROSS THE HOUSING AND HAVING A CRANK THROW WITHIN THE HOUSING, A CYLINDRICAL ROTOR SMALLER IN DIAMETER AND AXIALLY JOURNALED ON THE THROW, SAID HOUSING HAVING A CYLINDRICAL PERIPHERAL SIDE WALL AGAINST WHICH THE PERIPHERAL EDGE OF THE ROTOR IS IN ROLLING CONTACT, SAID SIDE WALL HAVING A RADIAL EXTENSION DEFINING A COMBUSTION CHAMBER, MEANS CONNECTED TO THE CHAMBER FOR INTRODUCING FUEL THEREIN, IGNITING MEANS IN THE CHAMBER FOR IGNITING A MIXTURE OF FUEL AND AIR THEREIN, SAID HOUSING SIDE WALL HAVING EX-
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |