Patent US3572609A successfully refreshed from Google Patents.
US3572609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Static discharged from jet aircraft
Assignee: Lockheed Martin Corp
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Filing: 1969-05-02
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Granted: 1971-03-30
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Expires: 1989-05-02
Abstract
Abstract A static discharger for an aircraft is described which employs a stream of gas passing between and over spaced, charged electrodes on the aircraft. One of the electrodes is perforated and is located around the other of the electrodes. To obtain best performance the gas stream contains finely divided carbon or smoke particles.
Inventors
- 👤 Roy G R Slawson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:08
CPC Classifications
B; B64; B64D; B64D45/00; B64D45/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
70 words
An aircraft static discharge apparatus for use on the body of an aircraft which comprises: a first rodlike electrode; a second perforate electrode located concentrically around said first electrode; said electrodes being located on said aircraft where a stream of gas will pass between and over them during the operation of said aircraft; and means for oppositely charging said electrodes located on said aircraft body and connected to said electrodes.
Claim 2
Dependent Claim
70 words
An aircraft static discharge apparatus for use on the body of an aircraft which comprises: a first rodlike electrode; a second perforate electrode located concentrically around said first electrode; said electrodes being located on said aircraft where a stream of gas will pass between and over them during the operation of said aircraft; and means for oppositely charging said electrodes located on said aircraft body and connected to said electrodes.
Claim 3
Dependent Claim
28 words
An aircraft static discharge apparatus as claimed in claim 1 wherein said apparatus is mounted within the exhaust manifold of a jet aircraft engine on said aircraft body.
Claim 4
Dependent Claim
43 words
An aircraft static discharge apparatus as claimed in claim 2 wherein: said electrodes are both from about 5 to about 15 inches long; and said second electrode is spaced from said first electrode a distance of from about 1 to about 3 inches.
Claim 5
Dependent Claim
30 words
An aircraft static discharge apparatus as claimed in claim 3 wherein said means for charging is capable of placing a potential differential on said electrodes of at least 5,000 volts.
Claim 6
Dependent Claim
46 words
An aircraft static discharge apparatus as claimed in claim 1 including means for locating finely divided carbon particles in the gas which passes between and over said electrodes during the operation of said aircraft, said means for locating being located on said body of said aircraft.
Claim 7
Dependent Claim
42 words
An aircraft static discharge apparatus as claimed in claim 5 wherein: said electrodes are both from about 5 to about 15 inches long; and said second electrode is spaced from said first electrode a distance of about 1 to about 3 inches.
Claim 8
Dependent Claim
30 words
An aircraft static discharge apparatus as claimed in claim 6 wherein said means for charging is capable of placing a potential differential on said electrodes of at least 5,000 volts.
Claim 9
Independent Claim
69 words
A method for discharging a static charge from the body of an aircraft which comprises creating a gas plasma in a stream of gas moving past said aircraft body by passing said stream of gas between spaced concentric, oppositely charged electrodes, the outermost of said electrodes being perforated, and injecting finely divided carbon particles into said stream of gas prior to passing said stream of gas between said electrodes.
Claim 10
Independent Claim
69 words
A method for discharging a static charge from the body of an aircraft which comprises creating a gas plasma in a stream of gas moving past said aircraft body by passing said stream of gas between spaced concentric, oppositely charged electrodes, the outermost of said electrodes being perforated, and injecting finely divided carbon particles into said stream of gas prior to passing said stream of gas between said electrodes.
References Cited (Backward Citations)
US2539163A
Cited
US3035208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |