Patent US3879940A successfully refreshed from Google Patents.
US3879940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine engine fuel delivery tube assembly
Assignee: General Electric Co
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Filing: 1973-07-30
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Granted: 1975-04-29
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Expires: 1993-07-30
Abstract
Abstract An improved fuel delivery tube assembly for use with a gas turbine engine having a double walled casing is adapted to deliver fuel from a manifold mounted externally of the outer casing to a combustor carbureting device mounted internally of the inner casing. The assembly includes a main body member, which provides a fuel inlet and passageway, an alignment collar adapted to surround the main body member and preclude misalignment of the fuel passageway with respect to the combustor, and first and second sealing means adapted to preclude the leakage of high temperature/high pressure gas around the main body member.
Inventors
- 👤 Richard E Stenger
- 👤 George Alfred St
- 👤 Peter F Kepf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:06
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/28; F23R3/283
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
184 words
In a gas turbine engine of the type including a compressor, a combustor having associated therewith at least one fuel/air carbureting device, a turbine operative to drive said compressor, and a low pressure fuel tube adapted to deliver fuel to said carbureting device, said fuel tube including an inlet for receiving fuel and an outlet for delivering fuel to said carbureting device, the improvement comprising: means for removably connecting said fuel tube to said combustor, said connecting means including alignment means for preventing connection of said tube to said combustor except when said outlet is properly aligned with said carbureting device, wherein said fuel tube includes a main body portion having a fuel passage located therein, said alignment means includes an alignment collar adapted to surround at least a portion of said main body portion, said collar further includes a pin, and said main body portion includes an opening for receiving at least a portion of said pin, said combustor is surrounded by casing means and said casing means includes a groove for receiving said pin when said pin is located within said opening.
Claim 2
Dependent Claim
184 words
In a gas turbine engine of the type including a compressor, a combustor having associated therewith at least one fuel/air carbureting device, a turbine operative to drive said compressor, and a low pressure fuel tube adapted to deliver fuel to said carbureting device, said fuel tube including an inlet for receiving fuel and an outlet for delivering fuel to said carbureting device, the improvement comprising: means for removably connecting said fuel tube to said combustor, said connecting means including alignment means for preventing connection of said tube to said combustor except when said outlet is properly aligned with said carbureting device, wherein said fuel tube includes a main body portion having a fuel passage located therein, said alignment means includes an alignment collar adapted to surround at least a portion of said main body portion, said collar further includes a pin, and said main body portion includes an opening for receiving at least a portion of said pin, said combustor is surrounded by casing means and said casing means includes a groove for receiving said pin when said pin is located within said opening.
Claim 3
Dependent Claim
21 words
The improvement recited in claim 1 further including a spherical plug adapted to surround a portion of said main body portion.
Claim 4
Dependent Claim
30 words
The improvement recited in claim 2 wherein said spherical plug includes a threaded portion and said combustor includes a threaded opening for receiving said threaded portion of said spherical plug.
Claim 5
Dependent Claim
34 words
The improvement recited in claim 3 wherein said pin is of sufficient length such that said threaded portion is incapable of engaging said threaded opening unless said pin is properly located within said groove.
Claim 6
Dependent Claim
37 words
The improvement recited in claim 2 wherein said spherical plug cooperates with a first sealing means to preclude the flow of fluid around said main body portion when said spherical plug is engaged by said threaded opening.
Claim 7
Dependent Claim
27 words
The improvement recited in claim 5 wherein said spherical plug further cooperates with second sealing means adapted to preclude the flow of fluiD around said spherical plug.
Claim 8
Dependent Claim
23 words
The improvement recited in claim 1 wherein said main body portion includes an outlet end and an inlet end and a calibration orifice.
Claim 9
Dependent Claim
70 words
The improvement recited in claim 7 further including a spherical plug adapted to surround a portion of said collar and a portion of said main body portion, said spherical plug including an externally threaded portion adapted to be received in a threaded opening within said combustor, and wherein said main body portion includes an enlarged platform member and said collar is captured between said spherical plug and said platform member.
Claim 10
Dependent Claim
28 words
The improvement recited in claim 8 wherein said collar includes a pin and said platform member includes an opening for receiving at least a portion of said pin.
Claim 11
Dependent Claim
33 words
The improvement recited in claim 9 wherein said combustor is surrounded by casing means and said casing means includes a groove for receiving said pin when said pin is located within said opening.
Claim 12
Dependent Claim
28 words
The improvement recited in claim 10 wherein said spherical plug and said collar cooperate to form a first sealing means between said fuel tube and said casing means.
Claim 13
Dependent Claim
52 words
The improvement recited in claim 11 further including second casing means surrounding said first casing means and adapted to provide an annular chamber therebetween, said spherical plug cooperating with second sealing means formed within said second casing means to preclude the flow of fluid from said annular chamber around said spherical plug.
Claim 14
Dependent Claim
181 words
A fuel tube assembly for a gas turbine engine combustor comprising a main body portion having an inlet and an outlet and a fuel passage located between said inlet and said outlet, said main body portion further including a platform member formed integrally therewith and located between said inlet and said outlet, an opening in said platform member, an alignment collar adapted to surround a portion of said main body portion, said alignment collar including a pin extending therefrom, a spherical plug adapted to surround a portion of said collar and a portion of said main body portion, said spherical plug including an externally threaded portion adapted to be received in a threaded opening within said combustor, said combustor comprising a groove for receiving said pin when said pin is located within said opening, said alignment collar further adapted to be captured between said platform member and said spherical plug, and said pin being characterized in that it precludes engagement of said threaded portion with the threaded opening except when said pin is located within said opening in said platform member.
Claim 15
Dependent Claim
181 words
A fuel tube assembly for a gas turbine engine combustor comprising a main body portion having an inlet and an outlet and a fuel passage located between said inlet and said outlet, said main body portion further including a platform member formed integrally therewith and located between said inlet and said outlet, an opening in said platform member, an alignment collar adapted to surround a portion of said main body portion, said alignment collar including a pin extending therefrom, a spherical plug adapted to surround a portion of said collar and a portion of said main body portion, said spherical plug including an externally threaded portion adapted to be received in a threaded opening within said combustor, said combustor comprising a groove for receiving said pin when said pin is located within said opening, said alignment collar further adapted to be captured between said platform member and said spherical plug, and said pin being characterized in that it precludes engagement of said threaded portion with the threaded opening except when said pin is located within said opening in said platform member.
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) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |