US4965412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coaxial electrical cable construction
Assignee: W.L. Gore and Associates Inc
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Filing: 1989-04-06
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Granted: 1990-10-23
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Expires: 2009-04-06
Abstract
Abstract A coaxial electric cable having a significant reduction in weight for equivalent electrical properties provided by wide spacing of braided or served shielding wires under metal foil, metal-laminated, or conductive tape shielding in a porous expanded polytetrafluoroethylene-insulated cable.
Inventors
- 👤 Vu A. Lai
- 👤 Carol A. Menefee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:42
CPC Classifications
H; H01; H01B; H01B11/00; H01B11/18; H01B11/1834; H01B11/1839; H01B11/1808
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A coaxial electric cable comprising in order: (a) a conductive metal center conductor surrounded by a layer of (b) porous expanded polytetrafluoroethylene electrical insulation; (b) surrounding said insulation a conductive wire shield having widely spaced wires wherein from about 10% to about 55% of the surface of said insulation is covered by said wires; (c) a wrapped conductive shield which comprises a material selected from the group comprising silver metal-filled polytetrafluoroethylene and carbon-filled polytetrafluoroethylene; and (d) a protective polymeric jacket.
Claim 2
Dependent Claim
80 words
A coaxial electric cable comprising in order: (a) a conductive metal center conductor surrounded by a layer of (b) porous expanded polytetrafluoroethylene electrical insulation; (b) surrounding said insulation a conductive wire shield having widely spaced wires wherein from about 10% to about 55% of the surface of said insulation is covered by said wires; (c) a wrapped conductive shield which comprises a material selected from the group comprising silver metal-filled polytetrafluoroethylene and carbon-filled polytetrafluoroethylene; and (d) a protective polymeric jacket.
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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) | 1993-10-22 | 1994-04-23 | 1994-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-22 | 1998-04-23 | 1998-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-22 | 2002-04-23 | 2002-10-23 | $7700.00 | Window Closed / Lapsed |