US3680371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Field test unit for a gas turbine fuel injection system
Assignee: Avco Corp
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Filing: 1971-02-16
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Granted: 1972-08-01
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Expires: 1991-02-16
Abstract
Abstract A unit is disclosed for field testing the nozzle manifold and fuel starting nozzles of a gas turbine engine. A portable case has a tank that is filled with fuel and pressurized to a predetermined level. The output of the tank is connected to the engine fuel nozzle manifold to test fuel distribution from the main nozzles. The engine starting nozzles are placed on a protractor nozzle support assembly to determine visually their spray pattern.
Inventors
- 👤 Roger A Marcio
- 👤 Orrin J Winton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:45
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/22
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
306 words
Apparatus for field testing the fuel injection system of a gas turbine engine, said apparatus comprising: a portable case; a tank mounted within said case; a valve element housing integral with one end of said tank, said valve housing having a longitudinal bore formed therein having a first closed end and a second end open to the interior of said tank and a pair of passageways extending from said longitudinal bore generally at right angles thereto; releasably attached caps for said right angle passageways, one permitting the entrance of fuel and the other permitting the entrance of air under pressure; a conduit spaced from the walls of and extending from the exterior of said valve element housing through the first end of said longitudinal bore and through the second end of said bore to a bottom portion of the tank; an operator-manipulated flow control valve series connected to and downstream of said tank for controlling flow of fuel therefrom; conduit means extending from said flow control valve and having a pair of outlets for enabling selective application of the output thereof to an engine main nozzle maNifold and to fuel starting nozzle whereby the flow characteristics of said assemblies may be tested; means on said case for releasably supporting a fuel nozzle at one outlet of said conduit means; a protractor having divergent sides with a predetermined angle therebetween; means for releasably supporting said protractor adjacent said nozzle support means in a first position extending outward from said casing for testing said nozzle and a second position fully contained within said case for transport therewith; said nozzle support means comprising a conduit extending from said conduit means and being pivotal from a first position extending outward from said casing for testing said nozzle and a second position wherein said nozzle is fully contained within said case.
Claim 2
Dependent Claim
306 words
Apparatus for field testing the fuel injection system of a gas turbine engine, said apparatus comprising: a portable case; a tank mounted within said case; a valve element housing integral with one end of said tank, said valve housing having a longitudinal bore formed therein having a first closed end and a second end open to the interior of said tank and a pair of passageways extending from said longitudinal bore generally at right angles thereto; releasably attached caps for said right angle passageways, one permitting the entrance of fuel and the other permitting the entrance of air under pressure; a conduit spaced from the walls of and extending from the exterior of said valve element housing through the first end of said longitudinal bore and through the second end of said bore to a bottom portion of the tank; an operator-manipulated flow control valve series connected to and downstream of said tank for controlling flow of fuel therefrom; conduit means extending from said flow control valve and having a pair of outlets for enabling selective application of the output thereof to an engine main nozzle maNifold and to fuel starting nozzle whereby the flow characteristics of said assemblies may be tested; means on said case for releasably supporting a fuel nozzle at one outlet of said conduit means; a protractor having divergent sides with a predetermined angle therebetween; means for releasably supporting said protractor adjacent said nozzle support means in a first position extending outward from said casing for testing said nozzle and a second position fully contained within said case for transport therewith; said nozzle support means comprising a conduit extending from said conduit means and being pivotal from a first position extending outward from said casing for testing said nozzle and a second position wherein said nozzle is fully contained within said case.
Claim 3
Dependent Claim
99 words
Apparatus as in claim 1 wherein said releasable mounting means comprises: a support having a passage therethrough opening on one side toward the exterior of said case and on the other side toward the interior of said case; an arm supporting said protractor and slidable into said passageway from either end; and a set screw releasably holding said arm in said passageway whereby in said first position said shaft is inserted in said passageway from the exterior of said case and in said second position said shaft is inserted in said passage from the interior portion of said case.
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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |