US3740662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser discharge tube
Assignee: Alcatel Lucent SAS
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Filing: 1971-03-17
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Granted: 1973-06-19
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Expires: 1991-03-17
Abstract
Abstract Disclosed are devices for causing electrical discharges in gases. The devices are characterized by the fact that the cathode includes sharp edged protuberances.
Inventors
- 👤 Serra J Rocca
- 👤 J Farcy
- 👤 R Dumanchin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:47
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/03; H01S3/038; H01S3/0385; H01S3/0387
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
69 words
In a gas laser generator including a discharge tube having an anode and a cathode, the improvement comprising: a. said cathode including at least one plate, having a sharp beveled edge, and b. at least one auxiliary electrical conductor arranged adjacent said sharp edge of said plate, whereby said sharp edged plate and said auxiliary conductor aids in the creation of a discharge between said cathode and said anode.
Claim 2
Dependent Claim
69 words
In a gas laser generator including a discharge tube having an anode and a cathode, the improvement comprising: a. said cathode including at least one plate, having a sharp beveled edge, and b. at least one auxiliary electrical conductor arranged adjacent said sharp edge of said plate, whereby said sharp edged plate and said auxiliary conductor aids in the creation of a discharge between said cathode and said anode.
Claim 3
Dependent Claim
35 words
The discharge tube of claim 1 further including insulation means separating said auxiliary conductor from said cathode and means for causing said auxiliary conductor to obtain an electric potential positive with respect to said cathode.
Claim 4
Dependent Claim
40 words
The discharge tube of claim 2 wherein said cathode is cylindrical and comprises a plurality of said sharp edge plates spaced along the circumference thereof and a plurality of said auxiliary conductors, one spaced between each successive pair of plates.
Claim 5
Dependent Claim
20 words
The discharge tube of claim 3 wherein said sharp edged plates are spaced along the inside circumference of said cathode.
Claim 6
Dependent Claim
20 words
The discharge tube of claim 3 wherein said sharp edged plates are spaced along the outside circumference of said cathode.
Claim 7
Dependent Claim
15 words
The discharge tube of claim 3 wherein said cathode and anode form a coaxial structure.
Claim 8
Dependent Claim
34 words
The discharge tube of claim 2 wherein said cathod and anode are each of a planar structure, said sharp edge of said plate being arranged essentially normal to one planar surface of said cathode.
Claim 9
Dependent Claim
30 words
The discharge tube of claim 7 further comprising a plurality of said plates and said auxiliary conductors, each of said auxiliary conductors being spaced between a pair of said plates.
Claim 10
Dependent Claim
34 words
The discharge tube of claim 1 wherein said cathode and anode form a coaxial structure said plate are formed by the edge of a single helicoidal plate arranged on the surface of said cathode.
Claim 11
Dependent Claim
13 words
The discharge tube of claim 9 wherein said auxiliary conductor is a helical.
Claim 12
Dependent Claim
33 words
The discharge tube of claim 1 wherein said auxiliary conductors and said plates are plural in number and wherein said auxiliary conductors are arranged essentiAlly coplanar with said sharp edges of said plates.
Claim 13
Dependent Claim
26 words
The discharge tube of claim 2 wherein said auxiliary conductor is cylindrical and said insulating means includes a solid insulating material disposed around said auxiliary conductor.
Claim 14
Dependent Claim
16 words
The discharge tube of claim 1 wherein said auxiliary conductor is tubular and surrounds said plate.
Claim 15
Dependent Claim
34 words
The discharge tube of claim 2 wherein said insulation means includes a solid insulating material and said cathode is a metallic deposit formed on said insulating material which terminates in a sharp tapered edge.
Claim 16
Dependent Claim
20 words
The discharge tube of claim 14 wherein said solid insulating material is a tube with an essentially cylindrical cross section.
Claim 17
Dependent Claim
18 words
The discharge tube of claim 15 wherein said auxiliary conductor is embedded in said tube shaped insulating material.
Claim 18
Dependent Claim
15 words
The discharge tube of claim 14 wherein said insulating material is essentially planar in structure.
Claim 19
Dependent Claim
31 words
The discharge tube of claim 17 wherein said auxiliary conductor is a metallic deposit on said planar insulating material on the face opposite the one on which is deposited said cathode.
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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |