US4945457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cool light source for optic fibres
Assignee: MARI IV INDUSTRIES Ltd
•
Filing: 1989-01-23
•
Granted: 1990-07-31
•
Expires: 2009-01-23
Abstract
Abstract A light source in a transparent envelope is contained in a sleeve which mounts the light input ends of optic fibres. Liquid coolant is caused to flow between the envelope and the fibres and is then cooled for recirculation.
Inventors
- 👤 Armand Yazdani
- 👤 Morris Anidjar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:00
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/36; G02B6/40; G02B6/0001; G02B6/0005; G02B6/0006; G02B6/26; G02B6/32; G02B6/322; G02B6/3616; G02B6/3624; G02B6/42; G02B6/4298; G02B6/38; G02B6/3807; G02B6/3873; G02B6/3874; G02B6/3878
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
97 words
Transmission source for synthetic optic fibres comprising: light source contained in a transparent envelope, sleeve surrounding said envelope, apertures in said sleeve directed inwardly toward said light source, synthetic optical fibres projecting through said apertures, to ends spaced from said envelope, means for causing liquid flow between said fibre ends and said envelope, such liquid being transparent, and non-reactive with its environs and having a refractive index at least as great as that of water, heat exchange means for cooling liquid existing from between said fibre ends and said envelope, means for returning liquid flow causing means.
Claim 2
Dependent Claim
97 words
Transmission source for synthetic optic fibres comprising: light source contained in a transparent envelope, sleeve surrounding said envelope, apertures in said sleeve directed inwardly toward said light source, synthetic optical fibres projecting through said apertures, to ends spaced from said envelope, means for causing liquid flow between said fibre ends and said envelope, such liquid being transparent, and non-reactive with its environs and having a refractive index at least as great as that of water, heat exchange means for cooling liquid existing from between said fibre ends and said envelope, means for returning liquid flow causing means.
Claim 3
Dependent Claim
31 words
Transmission source as claimed in claim 1 where said lamp envelope is cylindrical and said sleeve is approximately coaxial therewith and provided with means for spacing said sleeve from said envelope.
Claim 4
Dependent Claim
52 words
Transmission source as claimed in claim 1 wherein mounting means surround a plurality of said fibres and cooperating means are provided on said sleeve and said mounting means for locating the inner ends of said mounting means relative to said sleeve whereby the fibre end spacing from said envelope may be controlled.
Claim 5
Dependent Claim
52 words
Transmission source as claimed in claim 2 wherein mounting means enclose a plurality of said fibres and cooperating means are provided on said sleeve and said mounting means for locating the inner ends of said mounting means relative to said sleeve whereby the fibre end spacing from said envelope may be controlled.
Claim 6
Dependent Claim
58 words
Transmission source as claimed in claim 1 wherein a liquid tank surrounds said sleeve, a liquid inlet port is provided in one wall of said tank, below the intended liquid level therein, one end of said sleeve being coupled to said one wall, surrounding said port whereby liquid entering said tank through said port passes through said sleeve.
Claim 7
Dependent Claim
58 words
Transmission source as claimed in claim 2 wherein a liquid tank surrounds said sleeve, a liquid inlet port is provided in one wall of said tank, below the intended liquid level therein, one end of said sleeve being coupled to said one wall, surrounding said port whereby liquid entering said tank through said port passes through said sleeve.
Claim 8
Dependent Claim
12 words
Transmission source as claimed in claim 1 wherein said fibre is acrylic.
Claim 9
Dependent Claim
12 words
Transmission source as claimed in claim 2 wherein said fibre is acrylic.
Claim 10
Dependent Claim
12 words
Transmission source as claimed in claim 1 wherein said liquid is silicone.
Claim 11
Dependent Claim
12 words
Transmission source as claimed in claim 2 wherein said liquid is silicone.
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) | 1993-07-30 | 1994-01-29 | 1994-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-30 | 1998-01-29 | 1998-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-30 | 2002-01-29 | 2002-07-31 | $7700.00 | Window Closed / Lapsed |