Patent US4440974A successfully refreshed from Google Patents.
US4440974A
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Electromechanical cable for withstanding high temperatures and pressures, and method of manufacture
Assignee: Cables de Lyon SA
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Filing: 1982-06-16
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Granted: 1984-04-03
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Expires: 2002-06-16
Abstract
Abstract An electromechanical cable capable of withstanding high pressures and temperatures of at least 200° C., the cable comprising a core having a plurality of insulated conductors (3,5) covered with a conductive filler (7) which fills the voids between the conductors, the core being surrounded by a layer of conductive textile material (8) and by at least one layer of helically wound metal armor wire (9,10). The filler is a composite material comprising a silicone polymer with a semiconductor charge of carbon black.
Inventors
- 👤 Jacques Naudet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:15
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/04; H01B7/17; H01B7/28; H01B7/282; H01B7/285; H01B7/29; H01B7/292; Y; Y02; Y02A; Y02A30/00; Y02A30/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
83 words
An electromechanical cable capable of withstanding high pressures and temperatures of at least 200° C., the cable comprising a core having a plurality of insulated conductors covered with a conductive filler which fills the voids between the conductors, the core being surrounded by a layer of conductive textile material and by at least one layer of helically wound metal armor wire, the improvement wherein the filler is a composite material consisting essentially of a silicone polymer with a semiconductor charge of carbon black.
Claim 2
Dependent Claim
83 words
An electromechanical cable capable of withstanding high pressures and temperatures of at least 200° C., the cable comprising a core having a plurality of insulated conductors covered with a conductive filler which fills the voids between the conductors, the core being surrounded by a layer of conductive textile material and by at least one layer of helically wound metal armor wire, the improvement wherein the filler is a composite material consisting essentially of a silicone polymer with a semiconductor charge of carbon black.
Claim 3
Dependent Claim
13 words
A cable according to claim 1, wherein the silicone polymer is a diorganonpolysiloxane.
Claim 4
Dependent Claim
31 words
A cable according to claim 1, wherein the carbon black is in the form of particles having a specific surface area that is at least equal to 150 m 2 /g.
Claim 5
Dependent Claim
23 words
A cable according to claim 1, wherein the filler comprises 30 to 50 parts by weight carbon black per 100 parts silicone polymer.
Claim 6
Dependent Claim
18 words
A cable according to claim 1, wherein the conductors are stranded and each one is insulated with polymethylpentene.
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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) | 1987-04-03 | 1987-10-03 | 1988-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-03 | 1991-10-03 | 1992-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-03 | 1995-10-03 | 1996-04-03 | $7700.00 | Window Closed / Lapsed |