Patent US4986372A successfully refreshed from Google Patents.
US4986372A
Expired / Lapsed
US
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Electrical cable with spirally wrapped wires
Assignee: Hubbell Inc
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Filing: 1989-09-12
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Granted: 1991-01-22
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Expires: 2009-09-12
Abstract
Abstract An electric cable with spirally wrapped wires and wire-retaining strips thereon. The cable includes an insulated electrical conductor, an extruded semiconductive insulation shield overlying the insulated electrical conductor, a plurality of strips extruded and fused onto the insulation shield, and a plurality of wires wrapped around the insulation shield and the strips with sufficient tension to partially embed them into the strips to retain them therein and resist slippage. This arrangement also permits the selection of a first material having predetermined properties for the insulation shield and a second material for the strips having different properties from the first material composing the insulation shield. In one embodiment, the material selected for the strips has a higher softening or melting point than the softening or melting point of the material selected for the insulation shield. This embodiment reduces the pressure of the wires on the insulation shield to prevent indentation of the insulation shield. In another embodiment, the material selected for the strips has a higher coefficient of friction than the coefficient of friction of the material of the insulation shield and/or is a softer material than the material composing the insulation shield to further decrease the chances of slippage of the wires.
Inventors
- 👤 Robert C. Ganssle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:31
CPC Classifications
H; H01; H01B; H01B9/00; H01B9/02; H01B9/025
Claims Analysis
Total Claims: 47
Claim 1
Independent Claim
73 words
A method of making an electrical cable, comprising the steps of extruding an insulation shield, composed of a first material, about an insulated electrical conductor, extruding and bonding a plurality of strips, composed of a second material which is different from the first material, onto the insulation shield, and spirally wrapping a plurality of wires about the insulation shield and the strips with sufficient tension to partially embed the wires into the strips.
Claim 2
Independent Claim
73 words
A method of making an electrical cable, comprising the steps of extruding an insulation shield, composed of a first material, about an insulated electrical conductor, extruding and bonding a plurality of strips, composed of a second material which is different from the first material, onto the insulation shield, and spirally wrapping a plurality of wires about the insulation shield and the strips with sufficient tension to partially embed the wires into the strips.
Claim 3
Dependent Claim
22 words
The method according to claim 1, wherein the steps of extruding the insulation shield and the plurality of strips are conducted simultaneously.
Claim 4
Dependent Claim
26 words
The method according to claim 1, wherein the second material composing the strips has a higher softening point than the first material composing the insulation shield.
Claim 5
Dependent Claim
27 words
The method according to claim 3, and further comprising the step of extruding an additional layer of material overlying the wires, the strips and the insulation shield.
Claim 6
Dependent Claim
32 words
The method according to claim 1, wherein the step of extruding the insulation shield is preceded by the step of extruding a first layer of a high permittivity material over the conductor.
Claim 7
Dependent Claim
44 words
The method according to claim 1, wherein the second material composing the strips is softer than the first material composing the insulation shield, has a higher coefficient of friction than the coefficient of friction of the first material composing the insulation shield, or both.
Claim 8
Dependent Claim
22 words
The method according to claim 6, wherein the steps of extruding the insulation shield and the plurality of strips are conducted simultaneously.
Claim 9
Dependent Claim
27 words
The method according to claim 7, and further comprising the step of extruding an additional layer of material over the wires, the strips and the insulation shield.
Claim 10
Dependent Claim
32 words
The method according to claim 8, wherein the step of extruding the insulation shield is preceded by the step of extruding a first layer of a high permittivity material over the conductor.
Claim 11
Dependent Claim
36 words
The method according to claim 9, wherein the step of extruding the insulation shield is preceded by the step of extruding a second layer of non-conductive material over the first layer of a high permittivity material.
Claim 12
Dependent Claim
18 words
The method according to claim 10, wherein the first material composing the insulation shield is a semiconductive material.
Claim 13
Dependent Claim
24 words
The method according to claim 1, wherein the strips extend axially along the insulation shield and are circumferentially spaced apart about the insulation shield.
Claim 14
Dependent Claim
30 words
The method according to claim 1, wherein the step of extruding and bonding the strips onto the insulation shield includes the step of fusing the strips onto the insulation shield.
Claim 15
Dependent Claim
20 words
The method according to claim 13, wherein the steps of extruding the insulation shield and the strips are conducted simultaneously.
Claim 16
Independent Claim
101 words
A method of making an electrical cable, comprising the steps of extruding a first layer of a high permittivity material over an electrical conductor, extruding a second layer of non-conductive material over the first layer of a high permittivity material, extruding an insulation shield, composed of a first material, about the electrical conductor, extruding and bonding a plurality of strips, composed of a second material which is different from the first material, onto the insulation shield, and spirally wrapping a plurality of wires about the insulation shield and the strips with sufficient tension to partially embed the wires into the strips.
Claim 17
Independent Claim
101 words
A method of making an electrical cable, comprising the steps of extruding a first layer of a high permittivity material over an electrical conductor, extruding a second layer of non-conductive material over the first layer of a high permittivity material, extruding an insulation shield, composed of a first material, about the electrical conductor, extruding and bonding a plurality of strips, composed of a second material which is different from the first material, onto the insulation shield, and spirally wrapping a plurality of wires about the insulation shield and the strips with sufficient tension to partially embed the wires into the strips.
Claim 18
Dependent Claim
18 words
The method according to claim 15, wherein the first material composing the insulation shield is a semiconductive material.
Claim 19
Dependent Claim
20 words
The method according to claim 16, wherein the semiconductive material comprises ethyl vinyl acetate/polyethylene copolymer with carbon black contained therein.
Claim 20
Dependent Claim
26 words
The method according to claim 15, wherein the second material composing the strips has a higher softening point than the first material composing the insulation shield.
Claim 21
Dependent Claim
18 words
The method according to claim 18, wherein the second material composing the strips is a high density polyethylene.
Claim 22
Dependent Claim
22 words
The method according to claim 19, wherein the steps of extruding the insulation shield and the plurality of strips are conducted simultaneously.
Claim 23
Dependent Claim
69 words
An electrical cable, the combination comprising: an insulated electrical conductor; an insulation shield overlying said conductor and being composed of a first material; a plurality of strips overlying said insulation shield, composed of a second material which is different from said first material, and fused to said insulation shield; and a plurality of wires spirally wrapped about said insulation shield and said strips, and partially embedded into said strips.
Claim 24
Dependent Claim
69 words
An electrical cable, the combination comprising: an insulated electrical conductor; an insulation shield overlying said conductor and being composed of a first material; a plurality of strips overlying said insulation shield, composed of a second material which is different from said first material, and fused to said insulation shield; and a plurality of wires spirally wrapped about said insulation shield and said strips, and partially embedded into said strips.
Claim 25
Dependent Claim
27 words
An electrical cable according to claim 21, wherein said second material composing said strips has a higher softening point than said first material composing said insulation shield.
Claim 26
Dependent Claim
19 words
An electrical cable according to claim 22, wherein said second material composing said strips comprises a high density polyethylene.
Claim 27
Dependent Claim
25 words
An electrical cable according to claim 23, and further comprising an additional layer of material extruded over said insulation shield, said strips, and said wires.
Claim 28
Dependent Claim
19 words
An electrical cable according to claim 23, wherein said first material composing said insulation shield is a semiconductive material.
Claim 29
Dependent Claim
22 words
An electrical cable according to claim 25, wherein said semiconductive material comprises an ethyl vinyl acetate/polyethylene copolymer with carbon black contained therein.
Claim 30
Dependent Claim
32 words
An electrical cable according to claim 25, wherein each of said strips is about 0.300 inch to about 0.500 inch in width and about 0.010 inch in height at its highest point.
Claim 31
Dependent Claim
25 words
An electrical cable according to claim 27, wherein each of said wires is partially embedded into said strips about 0.004 inch to about 0.005 inch.
Claim 32
Dependent Claim
45 words
An electrical cable according to claim 21, wherein said second material composing said strips is softer than said first material composing said insulation shield, has a higher coefficient of friction than the coefficient of friction of said first material composing said insulation shield, or both.
Claim 33
Dependent Claim
16 words
An electrical cable according to claim 29, wherein said first material is composed of a copolymer.
Claim 34
Dependent Claim
16 words
An electrical cable according to claim 30, wherein said second material is composed of a copolymer.
Claim 35
Dependent Claim
19 words
An electrical cable according to claim 31, wherein said first material composing said insulation shield is a semiconductive material.
Claim 36
Dependent Claim
26 words
An electrical cable according to claim 21, and further comprising a first layer of a high permittivity material positioned between said conductor and said insulation shield.
Claim 37
Dependent Claim
22 words
An electrical cable according to claim 21, wherein each of said strips has a convexly curved outer surface for engage said wires.
Claim 38
Dependent Claim
35 words
An electrical cable according to claim 34, wherein each of said strips has a pair of substantially parallel end walls extending axially along said insulation shield, said curved outer surface extending between said end walls.
Claim 39
Dependent Claim
25 words
An electrical cable according to claim 21, wherein said strips extend axially along said insulation shield and are evenly spaced circumferentially about said insulation shield.
Claim 40
Dependent Claim
17 words
An electrical cable according to claim 21, wherein said wires are evenly spaced apart from each other.
Claim 41
Dependent Claim
104 words
An electrical cable, the combination comprising: an electrical conductor; an insulation shield overlying said conductor and being composed of a first material; a first layer of a high permittivity material positioned between said conductor and said insulation shield; a second layer of non-conductive material positioned between said first layer of a high permittivity material and said insulation shield; a plurality of strips overlying said insulation shield, composed of a second material which is different from said first material, and fused to said insulation shield; and a plurality of wires spirally wrapped about said insulation shield and said strips, and partially embedded into said strips.
Claim 42
Dependent Claim
104 words
An electrical cable, the combination comprising: an electrical conductor; an insulation shield overlying said conductor and being composed of a first material; a first layer of a high permittivity material positioned between said conductor and said insulation shield; a second layer of non-conductive material positioned between said first layer of a high permittivity material and said insulation shield; a plurality of strips overlying said insulation shield, composed of a second material which is different from said first material, and fused to said insulation shield; and a plurality of wires spirally wrapped about said insulation shield and said strips, and partially embedded into said strips.
Claim 43
Dependent Claim
25 words
An electrical cable according to claim 38, and further comprising an additional layer of material extruded over said insulation shield, said strips, and said wires.
Claim 44
Independent Claim
70 words
A method of making an electrical cable, comprising the steps of extruding a layer, composed of a first material, about an insulated electrical conductor, extruding and bonding a plurality of strips, composed of a second material, which is different from the first material onto the layer, and spirally wrapping a plurality of wires about the layer and the strips with sufficient tension to partially embed the wires into the strips.
Claim 45
Independent Claim
70 words
A method of making an electrical cable, comprising the steps of extruding a layer, composed of a first material, about an insulated electrical conductor, extruding and bonding a plurality of strips, composed of a second material, which is different from the first material onto the layer, and spirally wrapping a plurality of wires about the layer and the strips with sufficient tension to partially embed the wires into the strips.
Claim 46
Dependent Claim
65 words
An electrical cable, the combination comprising; an insulated electrical conductor; a layer overlying said conductor and being composed of a first material; a plurality of strips overlying said layer, composed of a second material which is different from said first material, and fused to said layer; and a plurality of wires spirally wrapped about said layer and said strips, and partially embedded into said strips.
Claim 47
Dependent Claim
65 words
An electrical cable, the combination comprising; an insulated electrical conductor; a layer overlying said conductor and being composed of a first material; a plurality of strips overlying said layer, composed of a second material which is different from said first material, and fused to said layer; and a plurality of wires spirally wrapped about said layer and said strips, and partially embedded into said strips.
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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) | 1994-01-21 | 1994-07-23 | 1995-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-21 | 1998-07-23 | 1999-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-21 | 2002-07-23 | 2003-01-22 | $7700.00 | Window Closed / Lapsed |