US3275061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel feeding systems
Assignee: Boeing Co
•
Filing: 1964-01-02
•
Granted: 1966-09-27
•
Expires: 1984-01-02
Abstract
No abstract record available.
Inventors
- 👤 Robert L Williams
- 👤 Howard E Corner
- 👤 William B Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:10
CPC Classifications
F; F02; F02M; F02M37/00; F02M37/0047; F02M37/007; B; B64; B64D; B64D37/00; B64D37/02; B64D37/14; B64D37/16; F02C; F02C7/00; F02C7/22; F02C7/236; F02M37/0076; F02M37/0088; F02M37/02; F02M37/025; Y; Y10; Y10T; Y10T137/00; Y10T137/4673; Y10T137/4807; Y10T137/8593; Y10T137/85978; Y10T137/86035
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A FUEL FEEDING SYSTEM FOR AN AIRCRAFT ENGINE COMPRISING: A FUEL TANK, A PUMP COMPRISING A FIRST AND SECOND STAGE ARRANGED IN SERIES, FIRST AND SECOND EJECTOR PUMP MEANS, THE FIRST OF SAID EJECTOR PUMP MEANS BEING DISPOSED IN SAID TANK AND FEEDING THROUGH A FUEL INTAKE LINE TO THE SECOND EJECTOR PUMP MEANS WHICH IN TURN FEEDS INTO THE INTAKE OF THE FIRST STAGE OF SAID PUMP, A FIRST PRESSURE BOOST FEEDBACK LINE DELIVERING FROM THE DISCHARGE OF THE FIRST STAGE TO NOZZLE MEANS OF THE FIRST PUMP EJECTOR MEANS, AND A SECOND PRESSURE BOOST FEEDBACK LINE DELIVERING FROM THE DISCHARGE OF THE SECOND STAGE TO NOZZLE MEANS OF THE SECOND EJECTOR PUMP MEANS.
Claim 2
Dependent Claim
115 words
A FUEL FEEDING SYSTEM FOR AN AIRCRAFT ENGINE COMPRISING: A FUEL TANK, A PUMP COMPRISING A FIRST AND SECOND STAGE ARRANGED IN SERIES, FIRST AND SECOND EJECTOR PUMP MEANS, THE FIRST OF SAID EJECTOR PUMP MEANS BEING DISPOSED IN SAID TANK AND FEEDING THROUGH A FUEL INTAKE LINE TO THE SECOND EJECTOR PUMP MEANS WHICH IN TURN FEEDS INTO THE INTAKE OF THE FIRST STAGE OF SAID PUMP, A FIRST PRESSURE BOOST FEEDBACK LINE DELIVERING FROM THE DISCHARGE OF THE FIRST STAGE TO NOZZLE MEANS OF THE FIRST PUMP EJECTOR MEANS, AND A SECOND PRESSURE BOOST FEEDBACK LINE DELIVERING FROM THE DISCHARGE OF THE SECOND STAGE TO NOZZLE MEANS OF THE SECOND EJECTOR PUMP MEANS.
References Cited (Backward Citations)
GB382592A
Cited
US2435982A
Cited
US2627812A
Cited
GB657083A
Cited
US2660232A
Cited
US2688925A
Cited
US2672880A
Cited
US3026929A
Cited
US2812715A
Cited
US2931381A
Cited
US2953156A
Cited
US3043104A
Cited
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 |