US4708833A
Expired / Lapsed
US
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Method for producing elastomeric optical fiber
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1986-05-13
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Granted: 1987-11-24
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Expires: 2006-05-13
Abstract
Abstract An elastomeric optical fiber comprising a core made of an elastomer with rubbery elasticity and a cladding surrounding the core and having low attenuation of light transmission is produced by a method comprising flowing down a liquid polymer for the core with cross-linking it, and simultaneously with or after the formation of the core, providing the cladding around the core.
Inventors
- 👤 Yoshitaka Ohsawa
- 👤 Yutaka Shibata
- 👤 Shin-ichiro Niwa
- 👤 Akira Nishimura
- 👤 Takafumi Uemiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:00
CPC Classifications
D; D01; D01F; D01F8/00; D01F8/04; B; B29; B29D; B29D11/00; B29D11/00663
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
58 words
A method for producing an elastomeric optical fiber comprising the steps of: flowing down a liquid polymer for the core and simultaneously cross-linking the polymer to form a core made of an elastomer with rubber elasticity, and applying the cladding around the core simultaneously with or after the formation of the core so as to surround the core.
Claim 2
Independent Claim
58 words
A method for producing an elastomeric optical fiber comprising the steps of: flowing down a liquid polymer for the core and simultaneously cross-linking the polymer to form a core made of an elastomer with rubber elasticity, and applying the cladding around the core simultaneously with or after the formation of the core so as to surround the core.
Claim 3
Dependent Claim
26 words
The method according to claim 1, wherein a liquid polymer for the cladding is simultaneously flowed down around the core polymer being flowed down, and cross-linked.
Claim 4
Dependent Claim
15 words
The method according to claim 1, wherein the cladding comprises an elastomer with rubber elasticity.
Claim 5
Dependent Claim
37 words
The method according to claim 1, wherein the liquid polymer for the core is one selected from the group consisting of liquid butadiene polymer, liquid fluorine-containing polymer, liquid siloxane polymer, liquid acrylonitrile-butadiene copolymer and a mixture thereof.
Claim 6
Dependent Claim
17 words
The method according to claim 4, wherein the liquid polymer for the core is liquid siloxane polymer.
Claim 7
Dependent Claim
14 words
The method according to claim 5, wherein the liquid siloxane polymer is dimethylsiloxane polymer.
Claim 8
Dependent Claim
20 words
The method according to claim 5, wherein the liquid siloxane polymer is liquid siloxane polymer having phenyl or naphthyl groups.
Claim 9
Dependent Claim
31 words
The method according to claim 2, wherein the liquid polymer for the cladding is one selected from the group consisting of liquid fluorine-containing polymer, liquid dimethylsiloxane polymer, and a mixture thereof.
Claim 10
Dependent Claim
31 words
The method according to claim 1, wherein the cladding is applied around the core by dip coating the core in a solution of a vinylidene fluoride/hexafluoropropylene/tetrafluoroethylene terpolymer in methyl ethyl ketone.
Claim 11
Dependent Claim
34 words
The method according to claim 1, wherein the core comprises a mixture of dimethylsiloxane polymer having vinyl groups at the chain ends, methylhydrogensiloxane-dimethylsiloxane copolymer, and a solution of H 2 PtCl 6 in isopropanol.
Claim 12
Dependent Claim
27 words
The method according to claim 1, wherein the core comprises a mixture of diphenyldimethylsiloxane polymer, methylhydrogensiloxane-dimethylsiloxane copolymer, and a solution of H 2 PtCl 6 in isopropanol.
Claim 13
Dependent Claim
27 words
The method according to claim 11, wherein the cladding comprises a mixture of dimethylsiloxane polymer, methylhydrogensiloxane-dimethylsiloxane copolymer, and a solution of H 2 PtCl 6 in isopropanol.
Claim 14
Dependent Claim
17 words
The method according to claim 12, wherein the cladding mixture simultaneously flows down with the core mixture.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-11-23 | 1991-05-25 | 1991-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-23 | 1995-05-25 | 1995-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-23 | 1999-05-25 | 1999-11-24 | $7700.00 | Window Closed / Lapsed |