US3331359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder head of an internal combustion engine comprising two intake and two exhaustvalves for each cylinder
Assignee: Individual
•
Filing: 1965-07-21
•
Granted: 1967-07-18
•
Expires: 1985-07-21
Abstract
No abstract record available.
Inventors
- 👤 Skatsche Othmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:58
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/24; F02F1/42; F02F1/4214; F02B; F02B2275/00; F02B2275/14; F02B2275/34; F02B3/00; F02B3/06; F02F2001/244; F02F2001/247; F02F2200/00; F02F2200/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
105 words
A CYLINDER HEAD OF AN INTERNAL COMBUSTION ENGINE COMPRISING A PLURALITY OF CYLINDERS, EACH CYLINDER COMPRISING TWO INTAKE VALVES AND TWO EXHAUST VALVES, THE SAID VALVES EXTENDING IN PERPENDICULAR RELATION TO A CRANKSHAFT OF THE INTERNAL COMBUSTION ENGINE, THE LOCATION OF THE INTAKE VALVES AND EXHAUST VALVES BEING REVERSED WITH EVERY SECOND CYLINDER OF THE INTERNAL COMBUSTION ENGINE, EACH INTAKE VALVE COMPRISING AN INLET PORT DESIGNED AS A SPIRAL DUCT, AND A SUCTION PORT IN THE TOP OF THE CYLINDER HEAD, THE FOUR SPIRAL DUCTS OF TWO ADJACENT CYLINDERS EACH ASCENDING TO THE TOP OF THE CYLINDER HEAD AND TERMINATING IN THE SAID SUCTION PORT.
References Cited (Backward Citations)
US3125075A
Cited
US2318914A
Cited
US2909971A
Cited
GB844352A
Cited
FR1201809A
Cited
GB899760A
Cited
US3054390A
Cited
US3020896A
Cited
US3240190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |