Patent US3710070A successfully refreshed from Google Patents.
US3710070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low voltage, compact electrically augmented burner
Assignee: Northern Natural Gas Co
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Filing: 1971-06-09
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Granted: 1973-01-09
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Expires: 1991-06-09
Abstract
Abstract A compact, low voltage burner capable of supplying high gas temperatures by electrical augmentation provided by a diffuse discharge in the gas stream at substantially less than 1,000 operating volts, including two electrodes spacially separated by less than 2 inches, a pilot stage for supplying a conductive zone between the electrodes, a gas inlet to supply the main gas to be heated to the conductive zone, means for supplying RF energy to said electrodes, and means for supplying an operating voltage of substantially less than 1,000 volts to start and maintain a diffuse discharge in the burner.
Inventors
- 👤 K Frantzen
- 👤 T Hirt
- 👤 R Kissinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:00
CPC Classifications
H; H05; H05H; H05H1/00; H05H1/24; H05H1/26; H05H1/30
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
250 words
A low voltage, compact electrically augmented burner for heating gases to high temperatures comprising: a pilot tube having an input and output end for containing a pilot flame; a pilot gas inlet for supplying a pilot gas stream to the input end of said pilot tube; means, intermediate the input end of said pilot tube and said pilot gas inlet, for receiving said gas stream and creating said pilot flame at said tube input end; an upstream electrode at the output end of said tube for receiving said pilot flame, said upstream electrode having a passageway to enable said pilot gas stream to flow therethrough; means for introducing ionizing additives to said pilot flame to form a substantially uniformally distributed conductive zone through said passageway in said upstream electrode; a downstream electrode having a passageway therethrough for alignment and direct communication with the passageway through said upstream electrode, means for mounting said downstream electrode with respect to said upstream electrode such that the minimum longitudinal distance between said electrodes along an axis aligned along said passageways is about 2 inches or less; means for supplying a main gas stream to be heated to said conductive zone between said upstream and downstream electrodes; and diffuse discharge means for maintaining a uniformly distributed electrical discharge through said main gas stream in said conductive zone; said diffuse discharge means including means for connecting said electrodes to a power source for operating said burner at an operating voltage on the order of 100 volts.
Claim 2
Dependent Claim
250 words
A low voltage, compact electrically augmented burner for heating gases to high temperatures comprising: a pilot tube having an input and output end for containing a pilot flame; a pilot gas inlet for supplying a pilot gas stream to the input end of said pilot tube; means, intermediate the input end of said pilot tube and said pilot gas inlet, for receiving said gas stream and creating said pilot flame at said tube input end; an upstream electrode at the output end of said tube for receiving said pilot flame, said upstream electrode having a passageway to enable said pilot gas stream to flow therethrough; means for introducing ionizing additives to said pilot flame to form a substantially uniformally distributed conductive zone through said passageway in said upstream electrode; a downstream electrode having a passageway therethrough for alignment and direct communication with the passageway through said upstream electrode, means for mounting said downstream electrode with respect to said upstream electrode such that the minimum longitudinal distance between said electrodes along an axis aligned along said passageways is about 2 inches or less; means for supplying a main gas stream to be heated to said conductive zone between said upstream and downstream electrodes; and diffuse discharge means for maintaining a uniformly distributed electrical discharge through said main gas stream in said conductive zone; said diffuse discharge means including means for connecting said electrodes to a power source for operating said burner at an operating voltage on the order of 100 volts.
Claim 3
Dependent Claim
28 words
A low voltage, compact burner as claimed in claim 1, wherein said means for mounting said electrodes comprises means for maintaining said minimum longitudinal distance at about 3/16.
Claim 4
Dependent Claim
25 words
A low voltage, compact burner as claimed in claim 2, including RF means coupled to said electrode for supplying RF energy to said conductive zone.
Claim 5
Dependent Claim
24 words
A low voltage, coMpact burner as claimed in claim 2, including portable support means for enabling said burner to be hand supported during operation.
Claim 6
Dependent Claim
51 words
A low voltage, compact burner as claimed in claim 1 for use in applying coating materials to a workpiece, including inlet means for receiving and dispersing said coating material into said flame, said burner directing said flame and coating material to said workpiece for applying a layer of said material thereon.
Claim 7
Dependent Claim
46 words
A low voltage, compact burner as claimed in claim 5, including a container for said coating material, said container adapted for connection to said inlet means on said burner, said container including means for gravity feeding said coating material at a predetermined rate into said flame.
Claim 8
Dependent Claim
40 words
A low voltage, compact burner as claimed in claim 6, including a handle, and means for mounting said handle to said burner to enable said burner to be hand-held and portable during use in applying coating materials to a workpiece.
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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |