US3842594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Governors for gas turbines
Assignee: Safran Aircraft Engines SAS
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Filing: 1973-04-18
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Granted: 1974-10-22
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Expires: 1993-04-18
Abstract
Abstract A governor for controlling the fuel feed of a gas turbine and in particular an aviation turbojet engine, comprising a housing containing hydromechanical elements, electromechanical elements and electronic elements immersed in a fuel bath which is renewed by a circulation of fuel between leakage or return flows caused by the operation of the said hydromechanical elements and a fuel return conduit, the said electronic elements being housed in a removable cover of the housing and fixed to the upper part of a support, the lower part of which supports the electromechanical elements.
Inventors
- 👤 W Grunert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:53
CPC Classifications
F; F02; F02C; F02C9/00; F02C9/26; F02C9/32
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
170 words
A governor for controlling the fuel feed of a gas turbine and in particular an aviation turbojet engine, comprising a housing having a removable cover and containing a fuel bath; hydromechanical elements contained in the housing and immersed in said fuel bath, said hydromechanical elements having fuel return and leakage orifices opening into the said housing; a pumping device for feeding said hydromechanical elements with fuel; a return conduit for fuel leaving said housing; a support arranged in the housing and defining a space contained in the cover, said support having an upper part and a lower part; electromechanical elements contained in the housing and supported by the lower part of said support in such manner as to be immersed in the fuel bath; mechanical connections connecting said hydromechanical elements to said electromechanical elements; electronic elements supported by the upper part of said support in the said space in such manner as to be immersed in the fuel bath; and electrical connections connecting the electromechanical elements to the electronic elements.
Claim 2
Dependent Claim
170 words
A governor for controlling the fuel feed of a gas turbine and in particular an aviation turbojet engine, comprising a housing having a removable cover and containing a fuel bath; hydromechanical elements contained in the housing and immersed in said fuel bath, said hydromechanical elements having fuel return and leakage orifices opening into the said housing; a pumping device for feeding said hydromechanical elements with fuel; a return conduit for fuel leaving said housing; a support arranged in the housing and defining a space contained in the cover, said support having an upper part and a lower part; electromechanical elements contained in the housing and supported by the lower part of said support in such manner as to be immersed in the fuel bath; mechanical connections connecting said hydromechanical elements to said electromechanical elements; electronic elements supported by the upper part of said support in the said space in such manner as to be immersed in the fuel bath; and electrical connections connecting the electromechanical elements to the electronic elements.
Claim 3
Dependent Claim
21 words
A governor as claimed in claim 1, in which said electrical connections comprise printed circuits which form part of the support.
Claim 4
Dependent Claim
30 words
A governor as claimed in claim 1, in which the support comprises a board fixed between said cover and a rim surrounding an opening at the top of the housing.
Claim 5
Dependent Claim
15 words
A governor as claimed in claim 1, in which the mechanical connections comprise removable couplings.
Claim 6
Dependent Claim
18 words
A governor as claimed in claim 1, in which the electronic elements comprise modules protected by fluid-tight casing.
Claim 7
Dependent Claim
31 words
A governor as claimed in claim 5, comprising means for plugging said modules into said support, and electrical connections on the fluid-tight casings for directly securing continuity of the electrical connections.
Claim 8
Dependent Claim
25 words
A governor as claimed in claim 6, in which said hydromechanical elements comprise a plurality of independent devices and hydraulic connections between said independent devices.
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) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |