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US4573159A
Expired / Lapsed
US
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Temperature-controlled laser apparatus
Assignee: Fujifilm Holdings Corp
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Filing: 1984-07-12
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Granted: 1986-02-25
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Expires: 2004-07-12
Abstract
Abstract A laser apparatus comprises a laser tube supported by a plurality of mounts on a supporting plate, a case housing the laser tube, temperature sensors positioned on the mounts or the supporting plate near the mounts or the laser tube, and a plurality of fans positioned on a wall of the case. The fans are positioned to generate air streams passing over the respective sections the temperatures of which are detected by the temperature sensors and operated in accordance with electric outputs of the temperature sensors, thereby maintaining the temperatures at the respective sections at a predetermined level.
Inventors
- 👤 Toshitaka Aagano
- 👤 Yoshimi Takasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:45
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/04; H01S3/041
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
130 words
A temperature-controlled laser apparatus provided with a laser tube supported by a plurality of mounts on a supporting plate, a case housing said laser tube, a plurality of temperature sensors positioned on said mounts, on said supporting plate near said mounts or on said laser tube for detecting the temperatures of said mounts or said supporting plate near said mounts or said laser tube, and a plurality of ventilation means positioned on said case, wherein the improvement comprises positioning said ventilation means to generate air streams passing over respective sections the temperatures of which are detected by said temperature sensors or near said respective sections, and operating said ventilation means in accordance with outputs of said temperature sensors, thereby maintaining the temperatures at said respective sections at a predetermined level.
Claim 2
Dependent Claim
130 words
A temperature-controlled laser apparatus provided with a laser tube supported by a plurality of mounts on a supporting plate, a case housing said laser tube, a plurality of temperature sensors positioned on said mounts, on said supporting plate near said mounts or on said laser tube for detecting the temperatures of said mounts or said supporting plate near said mounts or said laser tube, and a plurality of ventilation means positioned on said case, wherein the improvement comprises positioning said ventilation means to generate air streams passing over respective sections the temperatures of which are detected by said temperature sensors or near said respective sections, and operating said ventilation means in accordance with outputs of said temperature sensors, thereby maintaining the temperatures at said respective sections at a predetermined level.
Claim 3
Dependent Claim
35 words
An apparatus as defined in claim 1 wherein said temperature sensors are thermistors electrically connected to an input side of a control circuit system the output side of which is connected to said ventilation means.
Claim 4
Dependent Claim
26 words
An apparatus as defined in claim 2 wherein the rotation speeds of said ventilation means are controlled in proportion to the output levels of said thermistors.
Claim 5
Dependent Claim
27 words
An apparatus as defined in claim 1 further comprising a means for preheating said laser tube and said mounts before starting the operation of said laser apparatus.
References Cited (Backward Citations)
EP0060631A2
Cited
US4387462A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-02-24 | 1989-08-26 | 1990-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-24 | 1993-08-26 | 1994-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-24 | 1997-08-26 | 1998-02-25 | $7700.00 | Window Closed / Lapsed |