US4972041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ribbon cables having wrapped drain wires
Assignee: W.L. Gore and Associates Inc
•
Filing: 1989-07-18
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Granted: 1990-11-20
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Expires: 2009-07-18
Abstract
Abstract A multi-conductor flat ribbon cable for transmission of data signals having firmly-held accurately spaced apart drain wires wrapped with spaced-apart coils of polymer fibers.
Inventors
- 👤 Jerald M. Crawley
- 👤 John C. Hostler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:45
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/08; H01B7/0861
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
101 words
A flat multi-conductor ribbon electrical cable comprising: (a) a multiplicity of metal signal conductors separated and spaced apart at predetermined distances by webs of insulation which surround and insulate said conductors; (b) metallic shielding adjacent and surrounding said webs and said conductors on at least one side; (c) at least one conductive drain wire wrapped with coils of a polymer fiber, each said coil of said wrapped fiber being spaced apart at a predetermined distance from each other said coil of said fiber; and (d) a layer of insulation surrounding said conductors, said at least one drain wire, and said shielding.
Claim 2
Dependent Claim
101 words
A flat multi-conductor ribbon electrical cable comprising: (a) a multiplicity of metal signal conductors separated and spaced apart at predetermined distances by webs of insulation which surround and insulate said conductors; (b) metallic shielding adjacent and surrounding said webs and said conductors on at least one side; (c) at least one conductive drain wire wrapped with coils of a polymer fiber, each said coil of said wrapped fiber being spaced apart at a predetermined distance from each other said coil of said fiber; and (d) a layer of insulation surrounding said conductors, said at least one drain wire, and said shielding.
Claim 3
Dependent Claim
22 words
A cable of claim 1 wherein said polymer fiber coils are spirally or helically wrapped around said at least one drain wire.
Claim 4
Dependent Claim
13 words
A cable of claim 2 wherein said polymer fiber coils are therone plastic.
Claim 5
Dependent Claim
32 words
A cable of claim 2 wherein said polymer fiber coils are selected from the group comprising expanded polytetrafluoroethylene, fluorinated ethylene-propylene copolymer, copolymer of ethylene and tetrafluorethylene, fluorinated vinyl ethers, and polyvinyl chloride.
Claim 6
Dependent Claim
24 words
A cable of claim 1 wherein said web of insulation surrounding said conductors and said at least one drain wire comprises porous expanded polytetrafluoroethylene.
Claim 7
Dependent Claim
24 words
A cable of claim 2 wherein said webs of insulation surrounding said conductors and said at least one drain wire comprises porous expanded polytetrafluoroethylene.
Claim 8
Dependent Claim
23 words
A cable of claim 6 wherein said insulation surrounding said conductors, said at least one drain wire, and said shielding comprises polymer fibers.
Claim 9
Dependent Claim
25 words
A cable of claim 7 wherein said braided polymer fibers are selected from porous expanded polytetrafluoroethylene, fluorinated ethylene-propylene copolymer, polyvinylidine fluoride, polyvinyl chloride, or polyurethane.
Claim 10
Dependent Claim
30 words
A cable of claim 1 wherein said metallic shielding is selected from solid copper foil, perforated copper foil, copper mesh, braided copper wires, braided metal-plated copper wires, or aluminized polyester.
References Cited (Backward Citations)
DE1048619B
Cited
DE2644252A1
Cited
US4287385A
Cited
USRE31197E
Cited
US4443657A
Cited
US4490574A
Cited
US4481379A
Cited
US4492815A
Cited
US4564723A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-11-19 | 1994-05-21 | 1994-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-19 | 1998-05-21 | 1998-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-19 | 2002-05-21 | 2002-11-20 | $7700.00 | Window Closed / Lapsed |