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US4425475A Expired / Lapsed US ⏱️ 0.0 years remaining

High-strength flexible twin-lead cable

Assignee: Cooper Industries LLC
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Filing: 1981-09-28
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Granted: 1984-01-10
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Expires: 2001-09-28
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Abstract

Abstract A high-strength textile ribbon disposed against the webbing of the core of a parallel lead cable significantly enhances the breaking strength of the incorporating cable without significantly affecting its flexibility or electrical properties. Breaking strength may be further enhanced by bonding the ribbon to the webbing and the adjacent portion of the cable sheath.

Inventors

  • 👤 Robert E. Ward
  • 👤 James A. Lasley
  • 👤 John C. Young

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 18:44
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/18; H01B7/182; H01B7/04; H01B7/08; H01B7/0807

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 89 words
An electrical cable comprising: at least two conductor wires, said wires being parallel and spaced from one another; an inner jacket encasing said conductor wires and forming a webbing therebetween; a flat, unitary ribbon composed of a plurality of interconnected high-strength textile fibers disposed against one side of the webbing, said ribbon having a width approximately equal to the width of said webbing, said ribbon extending longitudinally of the cable; and an outer sheath extending longitudinally of said cable and surrounding said conductors, said inner jacket, and said ribbon.
Claim 2
Dependent Claim 89 words
An electrical cable comprising: at least two conductor wires, said wires being parallel and spaced from one another; an inner jacket encasing said conductor wires and forming a webbing therebetween; a flat, unitary ribbon composed of a plurality of interconnected high-strength textile fibers disposed against one side of the webbing, said ribbon having a width approximately equal to the width of said webbing, said ribbon extending longitudinally of the cable; and an outer sheath extending longitudinally of said cable and surrounding said conductors, said inner jacket, and said ribbon.
Claim 3
Dependent Claim 27 words
The cable of claim 1 further characterized in that the textile fibers of the ribbon are of a material with a tensile strength greater than 300,000 psi.
Claim 4
Dependent Claim 23 words
The cable of claim 1 or claim 2 further characterized in that said ribbon is bonded to the webbing and the outer sheath.
Claim 5
Dependent Claim 22 words
The cable of claim 1 or claim 2 further characterized in that the textile material of the ribbon is of an aramid.
Claim 6
Dependent Claim 26 words
The cable of claim 1 or claim 2 further characterized in that said ribbon includes parallel strands of aramid fibers which strands are bonded together side-by-side.
Claim 7
Dependent Claim 160 words
An electrical cable particularly adapted for the transmission of high frequency electrical energy, the cable comprising: two parallel spaced conductors, an inner jacket of polyethylene encasing the conductors and forming a webbing therebetween, the thickness of said webbing being less than the diameter of the jacket about said conductors, leaving a channel shaped recess between the conductors, an extruded outer jacket of foamed polyethylene surrounding said conductors and said inner jacket, and an elongated ribbon of textile fibers of high tensile strength extending longitudinally along the cable, one side of said ribbon being disposed against a portion of the outer sheath, the other side of the ribbon being disposed against the webbing, the width of said ribbon being approximately equal to the width of the webbing and the ribbon being disposed in said channel shaped recess, whereby the strength of the cable is increased by at least a factor of two without substantially affecting the electrical performance of the cable.
Claim 8
Dependent Claim 160 words
An electrical cable particularly adapted for the transmission of high frequency electrical energy, the cable comprising: two parallel spaced conductors, an inner jacket of polyethylene encasing the conductors and forming a webbing therebetween, the thickness of said webbing being less than the diameter of the jacket about said conductors, leaving a channel shaped recess between the conductors, an extruded outer jacket of foamed polyethylene surrounding said conductors and said inner jacket, and an elongated ribbon of textile fibers of high tensile strength extending longitudinally along the cable, one side of said ribbon being disposed against a portion of the outer sheath, the other side of the ribbon being disposed against the webbing, the width of said ribbon being approximately equal to the width of the webbing and the ribbon being disposed in said channel shaped recess, whereby the strength of the cable is increased by at least a factor of two without substantially affecting the electrical performance of the cable.
Claim 9
Dependent Claim 27 words
The article of claim 6 further characterized in that the textile fibers of the ribbon are of a material with a tensile strength greater than 300,000 psi.
Claim 10
Dependent Claim 20 words
The article of claim 6 further characterized in that said ribbon is bonded to the webbing and the outer sheath.
Claim 11
Dependent Claim 19 words
The article of claim 6 further characterized in that the textile material of the ribbon is of an aramid.
Claim 12
Dependent Claim 23 words
The article of claim 6 further characterized in that said ribbon includes parallel strands of aramid fibers which strands are bonded together side-by-side.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1987-01-09 1987-07-11 1988-01-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1991-01-09 1991-07-11 1992-01-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1995-01-09 1995-07-11 1996-01-10 $7700.00 Window Closed / Lapsed

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