Patent US4064076A successfully refreshed from Google Patents.
Patent US4288758A successfully refreshed from Google Patents.
US4288758A
Expired / Lapsed
US
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High power laser and cathode structure thereof
Assignee: 283377 ALBERTA Ltd 12639 - 52 AVENUE EDMONTON ALBERTA CANADA T6H OP6 A BODY CORPORATE Inc OF PROVINCE OF ALBERTA
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Filing: 1979-08-06
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Granted: 1981-09-08
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Expires: 1999-08-06
Abstract
Abstract A cathode structure for gas lasers comprising a flat plate of non-conducting material positioned in the laser in spaced relation to the laser anode to define a discharge region therebetween, a two-dimensional array of metal sub-electrode rods passing through the plate and having their upper ends lying flush with the surface of the plate, a block of dielectric material positioned below the plate and containing a series of transverse channels therein, electric current conductors lying in the channels and adapted for connection to a power supply, the lower ends of the said rods passing through openings in the block into the channels to define a predetermined uniform gap between the ends of the rods and the electrical conductor, and a liquid electrolyte solution filling the channels and electrically connecting the sub-electrode rods and the conductors.
Inventors
- 👤 Herb J. J. Seguin
- 👤 John Tulip
- 👤 Kyong H. Nam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:01
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/03; H01S3/038; H01S3/09; H01S3/097; H01S3/0971
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
144 words
In an electric discharge gas laser, the improvement comprising: (a) a flat plate of non-conducting material positioned in the laser in spaced relation to the laser anode to define a discharge region therebetween, (b) a two-dimensional array of metal sub-electrode rods passing through the plate and having (c) their upper ends lying flush with the surface of the plate, (d) a block of dielectric material positioned below the plate and containing a series of transverse channels therein, (e) electric current conductors lying in the channels and adapted for connection to a power supply, (f) the lower ends of the said rods passing through openings in the block into the channels to define a predetermined uniform gap between the ends of the rods and the electrical conductor, and (g) a liquid electrolyte solution filling the channels and electrically connecting the sub-electrode rods and the conductors.
Claim 2
Dependent Claim
144 words
In an electric discharge gas laser, the improvement comprising: (a) a flat plate of non-conducting material positioned in the laser in spaced relation to the laser anode to define a discharge region therebetween, (b) a two-dimensional array of metal sub-electrode rods passing through the plate and having (c) their upper ends lying flush with the surface of the plate, (d) a block of dielectric material positioned below the plate and containing a series of transverse channels therein, (e) electric current conductors lying in the channels and adapted for connection to a power supply, (f) the lower ends of the said rods passing through openings in the block into the channels to define a predetermined uniform gap between the ends of the rods and the electrical conductor, and (g) a liquid electrolyte solution filling the channels and electrically connecting the sub-electrode rods and the conductors.
Claim 3
Dependent Claim
22 words
A cathode structure for gas lasers as in claim 1 wherein the liquid electrolyte is a solution of potassium carbonate in water.
Claim 4
Dependent Claim
26 words
A cathode structure for gas lasers as in claim 2 wherein the potassium carbonate solution has a concentration of about 1 to 0.1 grams per liter.
Claim 5
Dependent Claim
19 words
A cathode structure for gas lasers as in claim 1 wherein the sub-electrode rods are made of stainless steel.
Claim 6
Dependent Claim
46 words
A cathode structure for gas lasers as in claim 1 wherein the sub-electrode rods pass through the openings in the block via sealing and clamping means adapted to allow movement of the rods in relation to the current conductors such as to change gap distance therebetween.
References Cited (Backward Citations)
US4080578A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-07 | 1985-03-09 | 1985-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-07 | 1989-03-09 | 1989-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-07 | 1993-03-09 | 1993-09-08 | $7700.00 | Window Closed / Lapsed |