US3687374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swivelable jet nozzle
Assignee: General Electric Co
•
Filing: 1970-07-02
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Granted: 1972-08-29
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Expires: 1990-07-02
Abstract
Abstract A uniplanar swivelable jet exhaust nozzle having duct sections which are serially and rotatably connected in planes oblique to their longitudinal axes. The first duct section is rotatably connected to support structure and peripherally carries a speed reduction train. The first gear of the train engages a motor driven ring gear extending around and carried by the first duct, and the last gear of the train engages a ring gear carried by the second duct section to impart torque thereto. A first gear of a synchronizing gear train, peripherally carried by the first duct, engages the second duct ring gear and a last gear of that train engages a ring gear fixedly carried by the support structure. Suitable connecting means are provided to drive the remaining duct sections.
Inventors
- 👤 Dudley O Nash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:40
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/002; F02K1/004; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
206 words
In a swivelable jet nozzle of the type having a plurality of duct sections serially and rotatably connected in planes oblique to their longitudinal axes, with the first said duct section rotatably connected to supporting structure in a plane normal to its longitudinal axis, improved means for rotatably driving the first and second duct sections of such series from motor drive means carried by said supporting structure, comprising: a rotatable drive ring operably connected to said drive means, extending around said first duct, and including a first ring gear, speed reducer and power transmitting gear means carried by said first duct section for transmitting torque to said second duct section, and having a first gear engaged with said first ring gear, a second ring gear fixedly carried by said second duct section and engaged with a last gear of said speed reducer and power transmitting gear means, a third ring gear fixedly carried by said supporting structure, and synchronizing gear means carried by said first duct section and including a first gear engaging said second ring gear and a last gear engaging said third ring gear for synchronizing the rotation of said first and secoNd duct sections in opposite directions in response to said transmitted torque.
Claim 2
Dependent Claim
206 words
In a swivelable jet nozzle of the type having a plurality of duct sections serially and rotatably connected in planes oblique to their longitudinal axes, with the first said duct section rotatably connected to supporting structure in a plane normal to its longitudinal axis, improved means for rotatably driving the first and second duct sections of such series from motor drive means carried by said supporting structure, comprising: a rotatable drive ring operably connected to said drive means, extending around said first duct, and including a first ring gear, speed reducer and power transmitting gear means carried by said first duct section for transmitting torque to said second duct section, and having a first gear engaged with said first ring gear, a second ring gear fixedly carried by said second duct section and engaged with a last gear of said speed reducer and power transmitting gear means, a third ring gear fixedly carried by said supporting structure, and synchronizing gear means carried by said first duct section and including a first gear engaging said second ring gear and a last gear engaging said third ring gear for synchronizing the rotation of said first and secoNd duct sections in opposite directions in response to said transmitted torque.
Claim 3
Dependent Claim
53 words
The improved jet nozzle of claim 1 further characterized in that said duct sections are generally elliptical in cross-section, with said speed reducer and power transmitting gear means and said synchronizing gear means disposed on the periphery of said first duct section and generally in the plane of the minor elliptical axis thereof.
Claim 4
Dependent Claim
53 words
The improved jet nozzle of claim 1 further characterized in that said speed reducer and power transmitting gear means and said synchronizing gear means respectively comprise gear trains sized to cooperatively produce approximately a 28 to 1 reduction between the speed of said first ring gear and the speed of said second gear.
Claim 5
Dependent Claim
23 words
The improved jet nozzle of claim 1 further characterized in that said drive ring is journaled for rotation to said first duct section.
Claim 6
Dependent Claim
40 words
The improved jet nozzle of claim 1 further characterized in that said jet nozzle comprises three duct sections and means for operably connecting said first and third duct sections for rotation in the same direction and at the same speed.
Claim 7
Dependent Claim
21 words
The improved jet nozzle of claim 5 further characterized in that said connecting means comprise a pair of engaged ring gears.
References Cited (Backward Citations)
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US3260049A
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US3443758A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |