US3787781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
External cathode/internal anode figure eight laser
Assignee: United States Department of the Air Force
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Filing: 1972-08-07
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Granted: 1974-01-22
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Expires: 1992-08-07
Abstract
Abstract A transverse-discharge slotted hollow cathode gaseous laser having an external cathode with the anode contained within the confines of the cathode provides an easily cooled, stabilized (non-thermionic-emitting) cold-cathode, rugged, ''''all metal'''' laser.
Inventors
- 👤 G Medicus
- 👤 O Breaux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:26
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/04; H01S3/041; H01S3/03; H01S3/038
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
110 words
An electrode structure for use in a transverse discharge, gaseous laser comprising: a. an elongated tubular cathode electrode member having a cross section substantially in the form of the figure 8 with a slot between the lobes of the ''''eight''''; b. a tubular anode electrode member positioned in axial spaced apart relationship in one of the said lobes of the cathode member; c. an insulating material coated on the inner surface of the wall of the said lobe containing the anode; d. means for providing a flow of heat transfer media through the said anode; and e. means for providing electrical connection to the said anode and the said cathode.
Claim 2
Dependent Claim
110 words
An electrode structure for use in a transverse discharge, gaseous laser comprising: a. an elongated tubular cathode electrode member having a cross section substantially in the form of the figure 8 with a slot between the lobes of the ''''eight''''; b. a tubular anode electrode member positioned in axial spaced apart relationship in one of the said lobes of the cathode member; c. an insulating material coated on the inner surface of the wall of the said lobe containing the anode; d. means for providing a flow of heat transfer media through the said anode; and e. means for providing electrical connection to the said anode and the said cathode.
Claim 3
Dependent Claim
31 words
The apparatus as claimed in claim 1 wherein the said means for providing electrical connection with the said anode cooperates with said means for providing a flow of heat transfer media.
References Cited (Backward Citations)
US3496489A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |