Patent US5002359A successfully refreshed from Google Patents.
US5002359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Buffered insulated optical waveguide fiber cable
Assignee: W.L. Gore and Associates Inc
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Filing: 1990-05-22
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Granted: 1991-03-26
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Expires: 2010-05-22
Abstract
Abstract A polymer-insulated glass optical waveguide fiber cable is buffered by an adhesively bound soft porous polytetrafluoroethylene taper layer to minimize stress on the glass fiber core and provide 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
2026-11-08 16:12
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4429; G02B6/443
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
56 words
A buffered insulated optical waveguide fiber cable comprising in order from the inside to the outside of said cable, the layers: (a) a glass fiber core coated in order with a cladding and a hard polymer coating surrounding said cladding; and (b) a layer of porous polytetrafluoroethylene adhered to said hard polymer coating by an adhesive.
Claim 2
Dependent Claim
56 words
A buffered insulated optical waveguide fiber cable comprising in order from the inside to the outside of said cable, the layers: (a) a glass fiber core coated in order with a cladding and a hard polymer coating surrounding said cladding; and (b) a layer of porous polytetrafluoroethylene adhered to said hard polymer coating by an adhesive.
Claim 3
Dependent Claim
26 words
The cable of claim 1 which additionally contains in order a heat-resistant first polymer jacket, a polymer fiber strength member sheath, and a second polymer jacket.
Claim 4
Dependent Claim
55 words
A cable of claim 2 wherein said glass fiber core is coated with a polyimide protective cladding and a polyimide hard polymer coating, said adhesive adhering said porous polytetrafluoroethylene layer to said hard coating comprises fluorinated ethylene propylene copolymer, said first jacket comprises polytetrafluoroethylene, said strength member comprises polyester, and said second jacket comprises polytetrafluoroethylene.
Claim 5
Dependent Claim
23 words
A cable of claim 1 wherein said hard polymer coating is selected from the group of polymers comprising polyimide and polyether ether ketone.
Claim 6
Dependent Claim
39 words
A cable of claim 1 wherein said adhesive is selected from the group comprising polyether ether ketone, fluorinated ethylene propylene copolymers, polymers of perfluoroalkoxy tetrafluoroethylene, polyvinyl fluoride, polyester, polyurethane, and organopolysiloxaneimide polymer (block copolymers of diorganosiloxane and polyimide units).
Claim 7
Dependent Claim
23 words
A cable of claim 2 wherein said strength member sheath comprises braided fibers selected from the group polyester, polytetrafluoroethylene, polysulfone, and polyamide fibers.
Claim 8
Dependent Claim
32 words
A cable of claim 2 wherein said first polymer jacket is selected from the group polyimide tape, polyether ether ketone, organopolysiloxane-imide, polyester, full density polytetrafluoroethylene tape, and copolymer of ethylene and tetrafluoroethylene.
Claim 9
Dependent Claim
27 words
A cable of claim 2 wherein said second polymer jacket is selected from the group polyvinyl chloride, rubber, silicone rubber, urethane rubber, and full density polytetrafluoroethylene tape.
Claim 10
Dependent Claim
21 words
A cable of claim 2 wherein said first polymer jacket, said strength member sheath, and said second 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) | 1994-03-25 | 1994-09-24 | 1995-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-25 | 1998-09-24 | 1999-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-25 | 2002-09-24 | 2003-03-26 | $7700.00 | Window Closed / Lapsed |