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US4868565A Expired / Lapsed US ⏱️ 0.0 years remaining

Shielded cable

Assignee: Schlumberger Technology Corp
•
Filing: 1988-01-20
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Granted: 1989-09-19
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Expires: 2008-01-20
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Abstract

Abstract A broad band electrical signal transmission system comprising: a first central conductor comprising: a plurality of conductive wire strands, a first insulating layer surrounding said wire strands, a conductive sheath surrounding said first insulating layer, and a second insulating layer surrounding said conductive sheath; a second central conductor identical to said first central conductor; a third insulating layer surrounding said first and second central conductors; a tubular shield surrounding said third insulating layer, said tubular shield comprising a braid of composite wire wherein said composite wire comprises: a central core of an amorphous metal material, a conductive cladding surrounding said central core, and a layer of silver surrounding said conductive cladding; and a dielectric sheath surrounding said tubular shield.

Inventors

  • 👤 Hal J. Mettes
  • 👤 Richard L. Bocock

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 16:10
CPC Classifications
H; H01; H01B; H01B11/00; H01B11/02; H01B11/06; H01B11/10; H01B11/1033; H01B11/18; H01B11/20

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 119 words
A broad band electrical signal transmission system comprising: a first central conductor comprising: a plurality of conductive wire strands, a first insulating layer surrounding said wire strands, a conductive sheath surrounding said first insulating layer, and a second insulating layer surrounding said conductive sheath; a second central conductor identical to said first central conductor; a third insulating layer surrounding said first and second central conductors; a tubular shield surrounding said third insulating layer, said tubular shield comprising a braid of composite wire wherein said composite wire comprises: a central core of an amorphous metal material, a conductive cladding surrounding said central core, and a layer of silver surrounding said conductive cladding; and a dielectric sheath surrounding said tubular shield.
Claim 2
Dependent Claim 119 words
A broad band electrical signal transmission system comprising: a first central conductor comprising: a plurality of conductive wire strands, a first insulating layer surrounding said wire strands, a conductive sheath surrounding said first insulating layer, and a second insulating layer surrounding said conductive sheath; a second central conductor identical to said first central conductor; a third insulating layer surrounding said first and second central conductors; a tubular shield surrounding said third insulating layer, said tubular shield comprising a braid of composite wire wherein said composite wire comprises: a central core of an amorphous metal material, a conductive cladding surrounding said central core, and a layer of silver surrounding said conductive cladding; and a dielectric sheath surrounding said tubular shield.
Claim 3
Dependent Claim 13 words
The system of claim 1 wherein said conductive cladding is formed of copper.

References Cited (Backward Citations)

US4028660A Cited
US4126287A Cited
US4355310A Cited
US4189618A Cited
US4642417A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-09-18 1993-03-20 1993-09-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-09-18 1997-03-20 1997-09-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-09-18 2001-03-20 2001-09-19 $7700.00 Window Closed / Lapsed

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