US4725693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power cable and laminate providing moisture barrier for power cable
Assignee: Hargro Lamcote Inc
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Filing: 1986-09-08
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Granted: 1988-02-16
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Expires: 2006-09-08
Abstract
Abstract An electrically-conductive sheet-form laminate is disclosed and a power cable made thereof. The laminate has a resistivity of no more than about 10 6 ohm-centimeters across the thickness dimension thereof. The sheet-form laminate comprises an electrically-conductive non-metallic layer, an electrically-conductive metal foil layer in juxtaposition thereto, and a discontinuous but electrically non-conductive bonding layer therebetween. The electrically-conductive non-metallic layer is constituted by a particulate conductive material-filled polymeric resin; and the electrically non-conductive bonding layer comprises a cured polymeric substance, preferably a polyurethane-based adhesive.
Inventors
- 👤 Arthur Hirsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:34
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B15/20; B32B7/00; B32B7/04; B32B7/12; B32B7/14; H; H01; H01B; H01B7/00; H01B7/17; H01B7/28; H01B7/282; H01B7/2825; H01B9/00; H01B9/02; B32B2264/00; B32B2264/10; B32B2264/107; B32B2264/108; B32B2307/00; B32B2307/20; B32B2307/202; B32B2307/206; B32B2311/00; B32B2311/12; B32B2311/14; B32B2311/24; B32B2323/00; B32B2323/04; B32B2457/00; Y; Y02; Y02A; Y02A30/00; Y02A30/14; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2944; Y10T428/31504; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
62 words
An electrically-conductive sheet-form laminate having a resistivity of no more than about 10 6 ohm-centimeters across the thickness dimension thereof and comprising: an electrically-conductive non-metallic layer; a metal foil layer in juxtaposition thereto; and a discontinuous but non-conductive bonding layer therebetween; said non-metallic layer being constituted by a particulate conductive material-filled polymeric resin; and said bonding layer comprising a cured polymeric substance.
Claim 2
Dependent Claim
62 words
An electrically-conductive sheet-form laminate having a resistivity of no more than about 10 6 ohm-centimeters across the thickness dimension thereof and comprising: an electrically-conductive non-metallic layer; a metal foil layer in juxtaposition thereto; and a discontinuous but non-conductive bonding layer therebetween; said non-metallic layer being constituted by a particulate conductive material-filled polymeric resin; and said bonding layer comprising a cured polymeric substance.
Claim 3
Dependent Claim
20 words
The electrically-conductive laminate of claim 1 wherein the polymeric resin is polyethylene, and wherein the particulate conductive material is carbon.
Claim 4
Dependent Claim
15 words
The electrically-conductive laminate of claim 1 wherein the cured polymeric substance is a polyurethane-based adhesive.
Claim 5
Dependent Claim
24 words
The electrically-conductive laminate of claim 1 wherein the metal in the foil layer is selected from the group consisting of aluminum, copper and lead.
Claim 6
Dependent Claim
112 words
In a power cable which includes an electrically-conductive core, insulation surrounding the core, and a jacket surrounding the insulation, the improvement which comprises: an electrically-conductive sheet-form laminate having a resistivity of no more than about 10 6 ohm-centimeters across the thickness dimension thereof, the laminate being positioned between the insulation and the jacket and providing a moisture barrier therebetween, the electrically-conductive laminate layer comprising: an electrically-conductive non-metallic layer; a metal foil layer in juxtaposition thereto, and a discontinuous but non-conductive bonding layer between said non-metallic layer and said metal foil layer; said non-metallic layer being constituted by a particulate conductive material-filled polymeric resin; and said bonding layer comprising a cured polymeric substance.
Claim 7
Dependent Claim
112 words
In a power cable which includes an electrically-conductive core, insulation surrounding the core, and a jacket surrounding the insulation, the improvement which comprises: an electrically-conductive sheet-form laminate having a resistivity of no more than about 10 6 ohm-centimeters across the thickness dimension thereof, the laminate being positioned between the insulation and the jacket and providing a moisture barrier therebetween, the electrically-conductive laminate layer comprising: an electrically-conductive non-metallic layer; a metal foil layer in juxtaposition thereto, and a discontinuous but non-conductive bonding layer between said non-metallic layer and said metal foil layer; said non-metallic layer being constituted by a particulate conductive material-filled polymeric resin; and said bonding layer comprising a cured polymeric substance.
Claim 8
Dependent Claim
20 words
The power cable of claim 5 wherein the polymeric resin is polyethylene, and wherein the particulate conductive material is carbon.
Claim 9
Dependent Claim
15 words
The power cable of claim 5 wherein the cured polymeric substance is a polyurethane-based adhesive.
Claim 10
Dependent Claim
24 words
The power cable of claim 5 wherein the metal in said foil layer is selected from the group consisting of aluminum, copper and lead.
References Cited (Backward Citations)
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US4454379A
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US4511626A
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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) | 1991-02-15 | 1991-08-17 | 1992-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-15 | 1995-08-17 | 1996-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-15 | 1999-08-17 | 2000-02-16 | $7700.00 | Window Closed / Lapsed |