Patent US4672623A successfully refreshed from Google Patents.
US4672623A
Expired / Lapsed
US
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Cathode construction for a laser
Assignee: Honeywell Inc
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Filing: 1985-08-16
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Granted: 1987-06-09
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Expires: 2005-08-16
Abstract
Abstract Disclosed is a cathode for a ring laser comprising a housing composed of substantially a nickel-iron composition having an inner cavity with a coating of a low sputtering electrically conductive material thereon.
Inventors
- 👤 Lowell C. Mellum
- 👤 Theodore J. Podgorski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:13
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/03; H01S3/038; G; G01; G01C; G01C19/00; G01C19/58; G01C19/64; G01C19/66; G01C19/661; H01S3/0388; H01S3/05; H01S3/08; H01S3/081; H01S3/083; H01S3/0835
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
47 words
A cathode for a gas discharge device comprising: a housing composed substantially of a nickle-iron composition, said housing including an outer mounting surface and an inner surface forming a cavity extending from said outer mounting surface; a low sputtering, electrically conductive material coating on said interior surface.
Claim 2
Dependent Claim
47 words
A cathode for a gas discharge device comprising: a housing composed substantially of a nickle-iron composition, said housing including an outer mounting surface and an inner surface forming a cavity extending from said outer mounting surface; a low sputtering, electrically conductive material coating on said interior surface.
Claim 3
Dependent Claim
18 words
The cathode of claim 1 wherein said conductive material is selected from the group of aluminum and beryllium.
Claim 4
Dependent Claim
99 words
A ring laser angular rate sensor comprising: a substantially thermally and mechanically stable block having a plurality of interconnected gas containing tunnels forming an optical closed-loop path cavity therein; at least one anode mounted on said block and in communication with said gas; a cathode mounted on said block and in communication with said gas, said cathode having a housing composed substantially of a nickel-iron composition, said housing including an outer mounting surface and an inner surface forming a cavity extending from said outer mounting surface, said cavity interior surface having a low sputtering electrically conductive material coating thereon.
Claim 5
Dependent Claim
99 words
A ring laser angular rate sensor comprising: a substantially thermally and mechanically stable block having a plurality of interconnected gas containing tunnels forming an optical closed-loop path cavity therein; at least one anode mounted on said block and in communication with said gas; a cathode mounted on said block and in communication with said gas, said cathode having a housing composed substantially of a nickel-iron composition, said housing including an outer mounting surface and an inner surface forming a cavity extending from said outer mounting surface, said cavity interior surface having a low sputtering electrically conductive material coating thereon.
References Cited (Backward Citations)
US4575855A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-08 | 1990-12-08 | 1991-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-08 | 1994-12-08 | 1995-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-08 | 1998-12-08 | 1999-06-09 | $7700.00 | Window Closed / Lapsed |