Patent US3174280A successfully refreshed from Google Patents.
US3174280A
Expired / Lapsed
US
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Ramjet power plants
Assignee: Bristol Siddeley Engines Ltd
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Filing: 1963-02-12
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Granted: 1965-03-23
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Expires: 1983-02-12
Abstract
No abstract record available.
Inventors
- 👤 Ackland Douglas Edward
- 👤 Wright Geoffrey Harry Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:13
CPC Classifications
F; F02; F02K; F02K7/00; F02K7/10; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A RAMJET POWER PLANT INCLUDING A RAM AIR TURBINE COUPLED TO DRIVE A FUEL PUMP HAVING A DISCHARGE PIPE CONNECTED TO A FUEL INJECTOR SYSTEM IN A RAMJET ENGINE COMBUSTION CHAMBER, AND INCLUDING IN THE FUEL SYSTEM A SPRINGLOADED CHECK VALVE BETWEEN THE PUMP AND THE INJECTION SYSTEM SO THAT THE FUEL PRESSURE BETWEEN THE PUMP AND THE CHECK VALVE WILL BE HIGHER THAN THE PRESSURE OF FUEL DELIVERED TO THE INJECTION SYSTEM, THE CHECK VALVE COMPRISING A VALVE BODY FIXED IN RELATION TO THE ENGINE, A SPRING-LOADED CLOSURE MEMBER OPENABLE BY FUEL PUMP DISCHARGE PRESSURE, AND A MASS MOUNTED FOR MOVEMENT IN A FORE AND AFT DIRECTION RELATIVELY TO THE ENGINE, THE MASS
Claim 2
Dependent Claim
114 words
A RAMJET POWER PLANT INCLUDING A RAM AIR TURBINE COUPLED TO DRIVE A FUEL PUMP HAVING A DISCHARGE PIPE CONNECTED TO A FUEL INJECTOR SYSTEM IN A RAMJET ENGINE COMBUSTION CHAMBER, AND INCLUDING IN THE FUEL SYSTEM A SPRINGLOADED CHECK VALVE BETWEEN THE PUMP AND THE INJECTION SYSTEM SO THAT THE FUEL PRESSURE BETWEEN THE PUMP AND THE CHECK VALVE WILL BE HIGHER THAN THE PRESSURE OF FUEL DELIVERED TO THE INJECTION SYSTEM, THE CHECK VALVE COMPRISING A VALVE BODY FIXED IN RELATION TO THE ENGINE, A SPRING-LOADED CLOSURE MEMBER OPENABLE BY FUEL PUMP DISCHARGE PRESSURE, AND A MASS MOUNTED FOR MOVEMENT IN A FORE AND AFT DIRECTION RELATIVELY TO THE ENGINE, THE MASS
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) | 1968-03-22 | 1968-09-21 | 1969-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-22 | 1972-09-21 | 1973-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-22 | 1976-09-21 | 1977-03-23 | $7700.00 | Window Closed / Lapsed |