Patent US4466240A successfully refreshed from Google Patents.
US4466240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel nozzle for gas turbine engine with external and internal removal capability
Assignee: RTX Corp
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Filing: 1981-10-26
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Granted: 1984-08-21
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Expires: 2001-10-26
Abstract
Abstract This invention relates to the mounting and support of fuel nozzles for gas turbine engines with the capability of removal externally and internally so that external removal capability negates the necessity of turbine and combustor teardown and allows access without engine removal from the aircraft.
Inventors
- 👤 Guy W. Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:09
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/28; F23R3/283
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
162 words
A fuel nozzle attachment system for an annular combustor for a gas turbine engine including a generally conically shaped ring-like member having a plurality of spaced apertures each of which are adapted to receive at least one fuel nozzle, a plate retractably supported to said ring-like member having a main body portion spanning said aperture, a flange portion extending about the peripheral edge of said main body overlying said ring-like member about said aperture, securing means accessible from the exterior of said combustor retractably supporting said fuel nozzle in said combustor for permitting removal of said fuel nozzle externally of said combustor when said securing means are retracted, a fuel line having a passage communicating with said fuel nozzle for delivering fuel to said combustor, additional securing means accessible externally of said combustor for retractably securing said fuel nozzle to said main body portion for permitting removal of said fuel nozzle internally of said combustor when said additional securing means are retracted.
Claim 2
Dependent Claim
162 words
A fuel nozzle attachment system for an annular combustor for a gas turbine engine including a generally conically shaped ring-like member having a plurality of spaced apertures each of which are adapted to receive at least one fuel nozzle, a plate retractably supported to said ring-like member having a main body portion spanning said aperture, a flange portion extending about the peripheral edge of said main body overlying said ring-like member about said aperture, securing means accessible from the exterior of said combustor retractably supporting said fuel nozzle in said combustor for permitting removal of said fuel nozzle externally of said combustor when said securing means are retracted, a fuel line having a passage communicating with said fuel nozzle for delivering fuel to said combustor, additional securing means accessible externally of said combustor for retractably securing said fuel nozzle to said main body portion for permitting removal of said fuel nozzle internally of said combustor when said additional securing means are retracted.
Claim 3
Dependent Claim
54 words
A fuel nozzle attachment system as in claim 1 wherein said fuel nozzle includes a pedestal adapted to extend into said combustor and a base at the foot of said pedestal, said base having a complimentary surface bearing against said main body and tapped holes in said base for receiving said additional securing means.
Claim 4
Dependent Claim
29 words
A fuel nozzle system as in claim 2 including a pintle member extending from said base through an opening in said main body member and into said fuel line.
Claim 5
Dependent Claim
25 words
A fuel nozzle system as in claim 3 including seal means surrounding said pintle member adjacent said main body member and adjacent said fuel line.
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) | 1987-08-21 | 1988-02-20 | 1988-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-21 | 1992-02-20 | 1992-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-21 | 1996-02-20 | 1996-08-21 | $7700.00 | Window Closed / Lapsed |