Patent US2364505A successfully refreshed from Google Patents.
US5293442A
Expired / Lapsed
US
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Crush-resistant high-strength buffered optical waveguide fiber cable
Assignee: W.L. Gore and Associates Inc
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Filing: 1992-07-15
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Granted: 1994-03-08
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Expires: 2012-07-15
Abstract
Abstract A polymer-insulated crush-resistant high-strength optical waveguide fiber cable buffered by a braided layer of porous polytetrafluoroethylene fibers to provide strength, a low thermal expansion coefficient buffer, and strong environmental protection.
Inventors
- 👤 Emile G. Sayegh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:12
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4429; G02B6/443; B; B29; B29C; B29C48/00; B29C48/03; B29C48/06; G02B6/4402; G02B6/4432
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
77 words
An optical fiber cable assembly comprising: (a) a light-transmitting fiber core comprising an optical fiber surrounded by a cladding of lower refractive index than said fiber and a protective layer of higher refractive index than said cladding; (b) a braided expanded porous polytetrafluoroethylene layer surrounding said core; (c) an inner jacket of heat resistant polymer surrounding said braided fiber buffer layer; (d) a braided fiber strength member surrounding said inner jacket; and (e) an outer protective jacket.
Claim 2
Dependent Claim
77 words
An optical fiber cable assembly comprising: (a) a light-transmitting fiber core comprising an optical fiber surrounded by a cladding of lower refractive index than said fiber and a protective layer of higher refractive index than said cladding; (b) a braided expanded porous polytetrafluoroethylene layer surrounding said core; (c) an inner jacket of heat resistant polymer surrounding said braided fiber buffer layer; (d) a braided fiber strength member surrounding said inner jacket; and (e) an outer protective jacket.
Claim 3
Dependent Claim
13 words
An assembly of claim 1 wherein said optical fiber comprises glass or silica.
Claim 4
Dependent Claim
30 words
An assembly of claim 1 wherein said protective layer of higher refractive index than said cladding is selected from the group consisting of polyamide, acrylic, and polyether ether ketone polymers.
Claim 5
Dependent Claim
17 words
An assembly of claim 1 wherein said braided fiber buffered layers coated with a thermoplastic polymer adhesive.
Claim 6
Dependent Claim
15 words
An assembly of claim 4 wherein said adhesive comprises a fluorocarbon polymer or a polyester.
Claim 7
Dependent Claim
24 words
An assembly of claim 1 wherein said braided fiber strength member comprises braided fibers selected from the group polyester, polytetrafluoroethylene, polysulfone, and polyamide fibers.
Claim 8
Dependent Claim
35 words
An assembly of claim 1 wherein said heat resistant polymer inner jacket is selected from the group polyimide tape, polyether ether ketone, organopolysiloxane-imide, polyester, full density polytetrafluoroethylene tape, tetrafluoroethylene-hexafluoropropylene copolymer, ethylene-tetrafluoroethylene copolymer, and perfluoroalkoxy tetrafluoroethylene.
Claim 9
Dependent Claim
34 words
An assembly of claim 1 wherein said protective outer polymer jacket is selected from the group polyvinyl chloride, rubber, silicone rubber, urethane rubber, full density polytetrafluoroethylene tape, tetrafluoroethylene-hexafluoropropylene copolymer, ethylene-tetrafluoroethylene copolymer, and perfluoroalkoxy tetrafluoroethylene.
Claim 10
Dependent Claim
21 words
An assembly of claim 1 wherein said protective layer, said braided fiber strength member, and said protective polymer jacket comprise polytetrafluoroethylene.
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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) | 1997-03-07 | 1997-09-06 | 1998-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-03-07 | 2001-09-06 | 2002-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-03-07 | 2005-09-06 | 2006-03-08 | $7700.00 | Window Closed / Lapsed |