US3733038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Discharge device for electrostatic charges
Assignee: United States Department of the Army
•
Filing: 1971-05-04
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Granted: 1973-05-15
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Expires: 1991-05-04
Abstract
Abstract This disclosure relates to aircraft and particularly to devices for reducing the triboelectric or electrostatic charge on an aircraft. More particularly, this disclosure relates to a device for penetrating the gaseous dielectric insulation around an aircraft to discharge the accumulated charge on said aircraft. More particularly, this disclosure relates to the projection of a stream of conductive gases, at high velocity, through the air surrounding an aircraft, towards ground or any point of high potential gradient with respect to the aircraft, to provide a conductive discharge path through the air to neutralize any electrostatic charge on the aircraft.
Inventors
- 👤 K Ikrath
- 👤 K Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:17
CPC Classifications
H; H05; H05F; H05F3/00; B; B64; B64D; B64D45/00; B64D45/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
66 words
A device for discharging an electrostatic charge from an aircraft comprising at least one small gas producing cartridge in addition to the flight-controlling power means of said aircraft, said cartridge having an exhaust-jet-nozzle and containing ignitable fuel; means for attaching said gas producing cartridge to the surface of said aircraft with the said jet nozzle directed away from said aircraft, and means for igniting said fuel.
Claim 2
Independent Claim
66 words
A device for discharging an electrostatic charge from an aircraft comprising at least one small gas producing cartridge in addition to the flight-controlling power means of said aircraft, said cartridge having an exhaust-jet-nozzle and containing ignitable fuel; means for attaching said gas producing cartridge to the surface of said aircraft with the said jet nozzle directed away from said aircraft, and means for igniting said fuel.
Claim 3
Dependent Claim
39 words
A device for discharging an electrostatic charge from an aircraft as in claim 1 having a plurality of said small gas producing cartridges, and means for igniting two or more of saId gas producing cartridges at the same time.
Claim 4
Dependent Claim
34 words
A device for discharging an electrostatic charge from an aircraft as in claim 1 having a plurality of said small gas producing cartridges and separate means for igniting each of said gas producing cartridges.
Claim 5
Dependent Claim
78 words
A device for discharging an electrostatic charge from an aircraft as in claim 1 wherein said means for igniting said fuel comprises a heating element, a source of electric current, and a switch connected in series; and a jet wick extending between said heating element and said ignitable fuel; said switch positioned inside of said aircraft and connecting said source of electric current to said heating coil to ignite said jet wick, which, in turn, ignites said fuel.
References Cited (Backward Citations)
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Cited
US2985104A
Cited
US2921521A
Cited
US3278138A
Cited
US3249049A
Cited
US3600632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |