US4096449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing an electric glow discharge in a flowing gas
Assignee: UNIVERSAL LASER CORP
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Filing: 1977-01-14
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Granted: 1978-06-20
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Expires: 1997-01-14
Abstract
Abstract Apparatus is described for producing an electric glow discharge in gas flowing along a channel with the discharge extending in a direction generally transverse to the flow, such apparatus including a first electrode disclosed adjacent a first wall of the flow channel and a generally planar second electrode disposed adjacent a second wall of the flow channel opposed to the first wall, the second electrode being formed of a material having a resistivity in the range of 10 2 to 10 6 ohm-centimeters. Means for electrically energizing the first and second electrodes to establish the glow discharge are also provided.
Inventors
- 👤 Jack D. Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:55
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/09; H01S3/097; H01S3/0979; B; B01; B01J; B01J19/00; B01J19/08; B01J19/087; B01J19/088
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
158 words
In a flowing gas high power glow discharge device in which a gas is moved in a predetermined direction along a channel where an electric glow discharge is maintained, apparatus for producing an electric glow discharge in said flowing gas in a direction generally transverse to said flow direction, comprising a first electrode disposed adjacent a first wall of said flow channel and extending in a direction generally transverse to said flow and generally transverse to the direction of said electric discharge, a generally planar second electrode disposed adjacent a second wall of said flow channel opposed to said first wall, said second electrode being formed of a material having a resistivity in the range of 10 2 to 10 6 ohm-centimeters and extending along said second wall generally opposite said first electrode, and means for electrically energizing said first and second electrodes to establish a glow discharge through said flowing gas between said first and second electrodes.
Claim 2
Dependent Claim
158 words
In a flowing gas high power glow discharge device in which a gas is moved in a predetermined direction along a channel where an electric glow discharge is maintained, apparatus for producing an electric glow discharge in said flowing gas in a direction generally transverse to said flow direction, comprising a first electrode disposed adjacent a first wall of said flow channel and extending in a direction generally transverse to said flow and generally transverse to the direction of said electric discharge, a generally planar second electrode disposed adjacent a second wall of said flow channel opposed to said first wall, said second electrode being formed of a material having a resistivity in the range of 10 2 to 10 6 ohm-centimeters and extending along said second wall generally opposite said first electrode, and means for electrically energizing said first and second electrodes to establish a glow discharge through said flowing gas between said first and second electrodes.
Claim 3
Dependent Claim
19 words
Apparatus according to claim 1 wherein said first electrode comprises a cathode and said second electrode comprises an anode.
Claim 4
Dependent Claim
22 words
Apparatus according to claim 1 wherein said second electrode is imbedded generally flush with the gas-contacting portion of said channel second wall.
Claim 5
Dependent Claim
26 words
Apparatus according to claim 1 wherein said first electrode extends across substantially the full width of said flow channel transverse to said direction of gas flow.
Claim 6
Dependent Claim
19 words
Apparatus according to claim 1 wherein said second electrode extends opposite substantially the full length of said first electrode.
Claim 7
Dependent Claim
24 words
Apparatus according to claim 1 wherein said second electrode material has a resistivity in the range of 1×10 4 ohm-centimeters to 2×10 4 ohm-centimeters.
Claim 8
Dependent Claim
28 words
Apparatus according to claim 1 wherein said second electrode includes a cavity extending internally thereof along its length, whereby a coolant may be circulated through the second electrode.
Claim 9
Dependent Claim
33 words
Apparatus according to claim 1 wherein said glow discharge device is a gas laser having an internal, closed loop fluid path, and wherein said flow channel comprises a portion of said fluid path.
Claim 10
Dependent Claim
22 words
Apparatus according to claim 1 wherein said second electrode material is formed from a mixture of carbon, aluminum oxide and sodium silicate.
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) | 1981-06-19 | 1981-12-19 | 1982-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-19 | 1985-12-19 | 1986-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-19 | 1989-12-19 | 1990-06-20 | $7700.00 | Window Closed / Lapsed |