US5138684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-strength isolated core cable
Assignee: W.L. Gore and Associates Inc
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Filing: 1991-01-14
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Granted: 1992-08-11
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Expires: 2011-01-14
Abstract
Abstract An isolated core cable for isolating a crush-sensitive core contained therein against a harsh environment, such as a fiber optic cable, a coaxial electric cable, a hydraulic line, or a pneumatic gas line, the cores therein being supported by a helically slit hard polymer tube inside a preferably braided fiber strength member. A resilient material may be wrapped around the cores inside the slit tube to further protect the cores from elongation and bending stresses.
Inventors
- 👤 Roddy M. Bullock
- 👤 Emile G. Sayegh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:41
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4429; G02B6/443; H; H01; H01B; H01B7/00; H01B7/17; H01B7/18; H01B7/1875
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
77 words
A cable which isolates a crush-resistive core therein comprising: (a) one or more crush-sensitive cores surrounded as a unit by a layer of resilient protective binder material which can be depressed under load, said crush-sensitive core selected from the group consisting of buffered fiber optic cables, coaxial electric cables, hydraulic lines, and pneumatic gas lines; (b) a helically slit crush-resistant polymer tube surrounding said cores and said binder material; and (c) a strength member surrounding said tube.
Claim 2
Dependent Claim
77 words
A cable which isolates a crush-resistive core therein comprising: (a) one or more crush-sensitive cores surrounded as a unit by a layer of resilient protective binder material which can be depressed under load, said crush-sensitive core selected from the group consisting of buffered fiber optic cables, coaxial electric cables, hydraulic lines, and pneumatic gas lines; (b) a helically slit crush-resistant polymer tube surrounding said cores and said binder material; and (c) a strength member surrounding said tube.
Claim 3
Dependent Claim
28 words
A cable of claim 1 wherein said layer of resilient binder material is selected from the group consisting of porous expanded polytetrafluoroethylene, textile fiber cloth, and polymer foam.
Claim 4
Dependent Claim
26 words
A cable of claim 1 wherein said polymer tube is selected from the group consisting of polyester, polypropylene, polyethylene, polyamide, aromatic polyamide, and acrylonitrile --butadiene--styrene terpolymer.
Claim 5
Dependent Claim
31 words
A cable of claim 1 wherein said strength member comprises braided fibers selected from the group consisting of aromatic polyamide, polyester-based liquid crystal polymer, expanded polytetrafluoroethylene, and combination of the above.
Claim 6
Dependent Claim
23 words
A cable of claim 1 having a friction and abrasion reducing binder between said slit polymer tube and said braided fiber strength member.
Claim 7
Dependent Claim
11 words
A cable of claim 5 wherein said binder comprises expanded polytetrafluoroethylene.
References Cited (Backward Citations)
US4695127A
Cited
US5002359A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-11 | 1996-02-10 | 1996-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-11 | 2000-02-10 | 2000-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-11 | 2004-02-10 | 2004-08-11 | $7700.00 | Window Closed / Lapsed |