Patent US5113407A successfully refreshed from Google Patents.
US5113407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Discharge tube for laser oscillator
Assignee: Fanuc Corp
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Filing: 1990-05-15
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Granted: 1992-05-12
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Expires: 2010-05-15
Abstract
Abstract At least one pair of electrodes (5a, 5b) are provided on the surface of a dielectric discharge tube (1), and radiating fins (2a, 2b) are attached to a part of the electrodes (5a, 5b). A ceramic clamp (3) and a stainless-steel backup plate (4) are engaged with recessed portions of the radiating fins (2a, 2b), to thereby fix the radiating fins (2a, 2b) in position. Accordingly, a rise in the temperature of the electrodes is reduced by radiating heat through the radiating fins, whereby a separation or deterioration of the electrodes (5a, 5b) is prevented.
Inventors
- 👤 Eiji Kobayashi
- 👤 Akira Egawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:39
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/04; H01S3/041; H01S3/03; H01S3/038; H01S3/0385; H01S3/0387
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
62 words
A discharge tube for a laser oscillator, comprising: at least one pair of electrodes formed on a surface of a dielectric discharge tube; and radiating fins attached to respective end portions of said electrodes, said radiating fins each having a recessed portion in the center, said recessed portion being fixed to said discharge tube by a clamp and a tenacious backup plate.
Claim 2
Dependent Claim
62 words
A discharge tube for a laser oscillator, comprising: at least one pair of electrodes formed on a surface of a dielectric discharge tube; and radiating fins attached to respective end portions of said electrodes, said radiating fins each having a recessed portion in the center, said recessed portion being fixed to said discharge tube by a clamp and a tenacious backup plate.
Claim 3
Dependent Claim
102 words
Discharge tube structure for a laser oscillator comprising: a dielectric discharge tube; a first electrode having a first end portion; a second electrode having a second end portion, said first and second end potions being disposed in spaced relationship relative to one another on the outer surface of said discharge tube; a first heat radiating fin assembly mounted on said tube and including a segment disposed in close heat conducting contact with said first end portion; and a second heat radiating fin assembly mounted on said tube and including a segment disposed in close heat conducting contact with said second end portion.
Claim 4
Dependent Claim
102 words
Discharge tube structure for a laser oscillator comprising: a dielectric discharge tube; a first electrode having a first end portion; a second electrode having a second end portion, said first and second end potions being disposed in spaced relationship relative to one another on the outer surface of said discharge tube; a first heat radiating fin assembly mounted on said tube and including a segment disposed in close heat conducting contact with said first end portion; and a second heat radiating fin assembly mounted on said tube and including a segment disposed in close heat conducting contact with said second end portion.
Claim 5
Dependent Claim
23 words
A discharge tube structure as set forth in claim 2, wherein said end portions are disposed on opposite sides of said discharge tube.
Claim 6
Dependent Claim
41 words
A discharge tube structure as set forth in claim 3, wherein is included a single clamp device for holding said segments of the first and second assemblies on said tube in said close heat conducting contact with said electrode end portions.
Claim 7
Dependent Claim
22 words
A discharge tube structure as set forth in claim 2, wherein each of said electrodes is formed by a metal deposition process.
Claim 8
Dependent Claim
21 words
A discharge tube structure as set forth in claim 2, wherein each of said electrodes is formed of a metallic tape.
Claim 9
Dependent Claim
18 words
A discharge tube structure as set forth in claim 2, wherein said radiating fins are formed of aluminum.
Claim 10
Dependent Claim
45 words
A discharge tube structure as set forth in claim 4, wherein each of said segments comprises a recessed portion in the center of the respective assembly, said device including a clamp and a tenacious backup plate for holding the segments against the corresponding end portion.
Claim 11
Dependent Claim
20 words
A discharge tube structure as set forth in claim 2, wherein is included a fan for air-cooling said radiating fins.
References Cited (Backward Citations)
JPS543491A
Cited
JPS6017975A
Cited
JPS61287285A
Cited
JPS6288384A
Cited
EP0254747A1
Cited
JPS62209878A
Cited
US4953176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-05-12 | 1995-11-11 | 1996-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-12 | 1999-11-11 | 2000-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-12 | 2003-11-11 | 2004-05-12 | $7700.00 | Window Closed / Lapsed |