US3758876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon dioxide laser
Assignee: Siemens AG
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Filing: 1971-07-26
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Granted: 1973-09-11
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Expires: 1991-07-26
Abstract
Abstract A carbon dioxide laser having an oxygen-providing agent incorporated therein comprised of a nickel oxide member arranged in the laser tube in association with a heater so that the nickel oxide reaches temperatures of about 400* to 500* C. during operation. A preferred form of nickel oxide member comprises an oxidized surface layer on a nickel metal base positioned in close proximity to an electrode and outside the discharge. In one form the cathode is formed of nickel and the outer surface thereof is oxidized to form the oxygen-providing agent. In another form a metallic mesh-like nickel screen is oxidized so that the outer surface thereof comprises nickel oxide and is positioned in close proximity to the cathode. Auxiliary heating means are provided in certain embodiments to attain a desired operating temperature.
Inventors
- 👤 E Klement
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:04
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/14; H01S3/22; H01S3/223; H01S3/2232; H01S3/02; H01S3/03; H01S3/036
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
23 words
A carbon-dioxide laser as defined in claim 1 wherein the oxygen-providing agent is arranged in close working proximity to one of the electrodes.
Claim 2
Dependent Claim
28 words
A carbon-dioxide laser as defined in claim 1 wherein an electrode of the laser is composed of nickel and the outer surface is provided with the oxygen-providing agent.
Claim 3
Dependent Claim
16 words
A carbon-dioxide laser as defined in claim 3 wherein the nickel electrode functions as a cathode.
Claim 4
Dependent Claim
36 words
A carbon-dioxide laser as defined in claim 1 including electrically insulated wires wound about an outer layer of the oxygen-providing agent and including means for connection with a voltage source to heat said agent during operation.
Claim 5
Dependent Claim
35 words
A carbon-dioxide laser as defined in claim 1 wherein the oxygen-providing agent comprises an outer layer of a mesh-like base, and said agent is positioned in close working proximity to an electrode of said laser.
Claim 6
Dependent Claim
22 words
A carbon-dioxide laser as defined in claim 1 wherein at least one of the electrodes of the laser is composed of nickel.
Claim 7
Dependent Claim
96 words
A carbon-dioxide laser comprised of a gas-impermeable envelope, a pair of electrodes mounted facing one another within said envelope, said electrodes including means for connection with a voltage source whereby one functions as a cathode and the other functions as an anode, a carbon-dioxide gas composition for producing laser radiation upon electrical discharge sealed within said envelope, and an oxygen-producing agent composed of nickel oxide arranged as an outer layer on at least one of the electrodes and positioned so as to attain a temperature in the range of about 400* to 500* C. during operation.
Claim 8
Dependent Claim
33 words
A carbon-dioxide laser as defined in claim 8 including a heating means positioned in contact with the oxygen-providing agent and being operationally connected to a voltage source so as to heat said agent.
Claim 9
Dependent Claim
124 words
A carbon-dioxide laser comprised of a gas-impermeable envelope, a pair of electrodes mounted facing one another within said envelope, said electrodes including means for connection with a voltage source whereby one functions as a cathode and the other functions as an anode, a carbon-dioxide gas composition for producing laser radiation upon electrical discharge sealed within said envelope, an oxygen-providing agent composed of nickel oxide coated on the surface of a base, said base being positioned in close working proximity to at least one of said electrodes, and a heating means positioned in contact with said oxygen-providing agent and including means for connection with a voltage source to heat said agent to a temperature in the range of about 400* to 500* C. during operation.
Claim 10
Dependent Claim
28 words
A carbon-dioxide laser as defined in claim 10 wherein the nickel oxide is coated on the surface of the base in a thickness of at least 1 millimicron.
References Cited (Backward Citations)
US2657325A
Cited
US3227911A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |