Patent US3417712A successfully refreshed from Google Patents.
US5095175A
Expired / Lapsed
US
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Water-tight rubber or plastic insulated cable
Assignee: Hitachi Cable Ltd
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Filing: 1991-04-24
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Granted: 1992-03-10
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Expires: 2011-04-24
Abstract
Abstract A water-tight rubber or plastic insulated cable includes water-tight compound which is injected into apertures among stranded wires for a conductor. The stranded conductor is compressed to have a solidity factor of 85 to 95% of the conductor. The water-tight compound is injected into the apertures among the stranded wires except for an outermost surface of the conductor. The water-tight compound has a scorch time of more than 20 minutes under a temperature of 130 DEG C. and includes conductive carbon of 50 to 60 weight %.
Inventors
- 👤 Fumio Yoshida
- 👤 Katsuyuki Isaka
- 👤 Susumu Koishihara
- 👤 Tsutomu Tanji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:16
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/28; H01B7/282; H01B7/285; Y; Y02; Y02A; Y02A30/00; Y02A30/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
104 words
A water-tight rubber or plastic insulated cable, comprising: a conductor consisting of stranded wires, said conductor being compressed to have a solidity factor of 85 to 95% of said conductor; water-tight compound, injected into apertures among said stranded wires and not provided on an outermost surface of said conductor, which has a scorch time of more than 20 minutes under a temperature of 130° C.; an inner semi-conductive layer which is extruded on said conductor; a rubber or plastic insulation layer which is extruded on said inner semiconductive layer; and an outer semi-conductive layer which is extruded on said rubber or plastic insulation layer.
Claim 2
Dependent Claim
104 words
A water-tight rubber or plastic insulated cable, comprising: a conductor consisting of stranded wires, said conductor being compressed to have a solidity factor of 85 to 95% of said conductor; water-tight compound, injected into apertures among said stranded wires and not provided on an outermost surface of said conductor, which has a scorch time of more than 20 minutes under a temperature of 130° C.; an inner semi-conductive layer which is extruded on said conductor; a rubber or plastic insulation layer which is extruded on said inner semiconductive layer; and an outer semi-conductive layer which is extruded on said rubber or plastic insulation layer.
Claim 3
Dependent Claim
98 words
A water-tight rubber or plastic insulated cable, comprising: a conductor consisting of stranded wires, said conductor being compressed to have a solidity factor of 85 to 95% of said conductor; water-tight compound, injected with apertures among said stranded wires and not provided on an outermost surface of said conductor, which comprises conductive carbon of 50 to 60 weight %; an inner semiconductive layer which is extruded on said conductor; a rubber or plastic insulation layer which is extruded on said inner semiconductive layer; and an outer semiconductive layer which is extruded on said rubber or plastic insulation layer.
Claim 4
Dependent Claim
98 words
A water-tight rubber or plastic insulated cable, comprising: a conductor consisting of stranded wires, said conductor being compressed to have a solidity factor of 85 to 95% of said conductor; water-tight compound, injected with apertures among said stranded wires and not provided on an outermost surface of said conductor, which comprises conductive carbon of 50 to 60 weight %; an inner semiconductive layer which is extruded on said conductor; a rubber or plastic insulation layer which is extruded on said inner semiconductive layer; and an outer semiconductive layer which is extruded on said rubber or plastic insulation layer.
Claim 5
Dependent Claim
115 words
A water-tight rubber or plastic insulated cable, comprising: a conductor consisting of stranded wires, said conductor being compressed to have a solidity factor of 85 to 95% of said conductor; a water-tight compound, injected into apertures among said stranded wires and not provided on an outermost surface of said conductor, which has a scorch time of more than 20 minutes under a temperature of 130° C. and comprises conductive carbon of 50 to 60 weight %; an inner semiconductive layer which is extruded on said conductor; a rubber or plastic insulation layer which is extruded on said inner semiconductive layer; and an outer semiconductive layer which is extruded on said rubber or plastic insulation layer.
Claim 6
Dependent Claim
115 words
A water-tight rubber or plastic insulated cable, comprising: a conductor consisting of stranded wires, said conductor being compressed to have a solidity factor of 85 to 95% of said conductor; a water-tight compound, injected into apertures among said stranded wires and not provided on an outermost surface of said conductor, which has a scorch time of more than 20 minutes under a temperature of 130° C. and comprises conductive carbon of 50 to 60 weight %; an inner semiconductive layer which is extruded on said conductor; a rubber or plastic insulation layer which is extruded on said inner semiconductive layer; and an outer semiconductive layer which is extruded on said rubber or plastic insulation layer.
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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) | 1995-03-10 | 1995-09-09 | 1996-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-10 | 1999-09-09 | 2000-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-10 | 2003-09-09 | 2004-03-10 | $7700.00 | Window Closed / Lapsed |