US4572609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling mechanism for optical fiber
Assignee: National Institute of Advanced Industrial Science and Technology
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Filing: 1984-12-07
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Granted: 1986-02-25
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Expires: 2004-12-07
Abstract
Abstract A mechanism for cooling optical fibers which include optical fibers, metal netting wound around the fibers to conduct heat therefrom, and a sheath in which the fibers and netting are inserted. In accordance with one embodiment, the sheath and netting are spaced from each other so as to permit cooling air to flow therebetween to cool the fibers. In another embodiment, the netting is connected to a cooler by a heat connected element so that heat in the fibers is drawn to the cooler through the heat conductive element to cool the fibers.
Inventors
- 👤 Shiro Sakuragi
- 👤 Mitsunori Saitoh
- 👤 Haruo Kotani
- 👤 Kyoshiro Imagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:05
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4296; G02B6/44; G02B6/4439; G02B6/36; G02B6/38; G02B6/3807; G02B6/381; G02B6/3814
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
76 words
A mechanism for cooling optical fibers, comprising: at least one infrared light transmitting optical fiber; metal netting wound about said at least one fiber to conduct heat from said at least one fiber; and a sheath, said at least one fiber on the periphery thereof and said netting being inserted in said sheath, said sheath and said netting being spaced so as to permit cooling air to flow therebetween to cool said at least one fiber.
Claim 2
Dependent Claim
76 words
A mechanism for cooling optical fibers, comprising: at least one infrared light transmitting optical fiber; metal netting wound about said at least one fiber to conduct heat from said at least one fiber; and a sheath, said at least one fiber on the periphery thereof and said netting being inserted in said sheath, said sheath and said netting being spaced so as to permit cooling air to flow therebetween to cool said at least one fiber.
Claim 3
Dependent Claim
23 words
A mechanism as in claim 1, wherein said netting is wound in direct contact with the periphery of said at least one fiber.
Claim 4
Dependent Claim
28 words
A mechanism as in claim 1, further comprising means for introducing cooling air between said sheath and said netting at one end of said at least one fiber.
Claim 5
Dependent Claim
23 words
A mechanism as in claim 3, wherein said netting is would in direct contact with the periphery of said at least one fiber.
Claim 6
Dependent Claim
91 words
A mechanism for cooling optical fibers, comprising: at least one infrared light transmitting optical fiber; metal netting wound about said at least one fiber on the periphery thereof to conduct heat from said at least one fiber; a sheath, said at least one fiber and said netting being inserted in said sheath; a cooler; and a heat conductive element connecting said cooler to said netting so that heat in said at least one fiber is drawn to said cooler through said netting and element to cool said at least one fiber.
Claim 7
Dependent Claim
91 words
A mechanism for cooling optical fibers, comprising: at least one infrared light transmitting optical fiber; metal netting wound about said at least one fiber on the periphery thereof to conduct heat from said at least one fiber; a sheath, said at least one fiber and said netting being inserted in said sheath; a cooler; and a heat conductive element connecting said cooler to said netting so that heat in said at least one fiber is drawn to said cooler through said netting and element to cool said at least one fiber.
Claim 8
Dependent Claim
23 words
A mechanism as in claim 5, wherein said netting is wound in direct contact with the periphery of said at least one fiber.
Claim 9
Dependent Claim
33 words
A mechanism as in claim 3, wherein said element comprises a metal wire connected at opposite ends to said netting and said cooler so that heat flows in said wire to said cooler.
Claim 10
Dependent Claim
23 words
A mechanism as in claim 7, wherein said netting is wound in direct contact with the periphery of said at least one fiber.
References Cited (Backward Citations)
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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 |