Patent US3627239A successfully refreshed from Google Patents.
US3627239A
Expired / Lapsed
US
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Aircraft engine fuel system
Assignee: General Electric Co
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Filing: 1970-04-20
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Granted: 1971-12-14
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Expires: 1990-04-20
Abstract
Abstract An engine fuel system is disclosed for use in conjunction with an aircraft fuel transfer system wherein high-pressure fuel from the engine system is provided to power jet pumps for delivering fuel from the aircraft fuel tanks to the engine and for transferring fuel between two aircraft tanks. The engine fuel system includes means associated with the engine boost pump wherein clean fuel is withdrawn from the boost pump and provided to a jet motive flow pump, which pressurizes the extracted fuel and supplies it to the jet pumps of the aircraft fuel transfer system.
Inventors
- 👤 Thomas N Hull Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:18
CPC Classifications
B; B64; B64D; B64D37/00; B64D37/02; B64D37/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
121 words
An aircraft engine fuel system adapted to provide a quantity of pressurized fuel to operate the pumping system for an aircraft fuel transfer system, said fuel system comprising: centrifugal contaminant-separating means adapted for connection to a fuel supply line from the aircraft fuel tanks, said separating means having a cleaned flow outlet and an uncleaned flow outlet; means connected to said cleaned flow outlet for pressurizing fuel derived therefrom and delivering it to the aircraft fuel transfer system wherein the fuel so pressurized operates as the motive fluid for effecting a flow of fuel from said fuel tanks; combustion fuel delivery means connected to said uncleaned flow outlet for heating, cleaning, and metering fuel flow to the aircraft engine for combustion.
Claim 2
Dependent Claim
121 words
An aircraft engine fuel system adapted to provide a quantity of pressurized fuel to operate the pumping system for an aircraft fuel transfer system, said fuel system comprising: centrifugal contaminant-separating means adapted for connection to a fuel supply line from the aircraft fuel tanks, said separating means having a cleaned flow outlet and an uncleaned flow outlet; means connected to said cleaned flow outlet for pressurizing fuel derived therefrom and delivering it to the aircraft fuel transfer system wherein the fuel so pressurized operates as the motive fluid for effecting a flow of fuel from said fuel tanks; combustion fuel delivery means connected to said uncleaned flow outlet for heating, cleaning, and metering fuel flow to the aircraft engine for combustion.
Claim 3
Dependent Claim
27 words
The fuel system recited in claim 1 wherein said combustion fuel delivery means comprises in series a fuel heater, fuel-filtering means, high-pressure pumping means, and fuel-metering mEans.
Claim 4
Dependent Claim
25 words
The fuel system recited in claim 2 wherein said fuel heater is a heat exchanger adapted to derive its heating medium from the engine compressor.
Claim 5
Dependent Claim
35 words
The fuel system recited in claim 3 wherein said centrifugal contaminant separating means is a centrifugal pump which includes means for diverting fuel from its diffuser at a point radially inward from the diffuser periphery.
Claim 6
Dependent Claim
58 words
The fuel system recited in claim 1 wherein said pressurizing and delivering means includes a pressurizing pump for pressurizing fuel received from said cleaned flow outlet; conduit means for flowing said pressurized fuel to said fuel tanks and jet pump means within each fuel tank and operated by said pressurized fuel for flowing additional fuel from said tanks.
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) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |