US4701575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jacketed cable with powder layer for enhanced corrosion and environmental protection
Assignee: Commscope Inc of North Carolina
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Filing: 1986-05-27
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Granted: 1987-10-20
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Expires: 2006-05-27
Abstract
Abstract A corrosion-resistant electric cable has a metallic conductor, a polymeric insulating jacket surrounding the metallic conductor, and a corrosion-inhibiting powder comprised of a hydrophobic material disposed between the metallic conductor and the insulating jacket. The corrosion-inhibiting powder may be comprised of a mixture of a hydrophobic fumed silica powder and a hydrophobic polyethylene powder.
Inventors
- 👤 Chakra V. Gupta
- 👤 Brian D. Garrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:42
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/28; H01B7/2806; H01B13/00; H01B13/32; H01B13/321; H01B7/282; H01B11/00; H01B11/02; H01B11/06; H01B11/10; H01B11/1016; H01B11/1033
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
66 words
A corrosion-resistant cable comprising at least one metallic conductor, a polymeric insulating jacket surrounding said conductor, and a corrosion-inhibiting hydrophobic powder disposed between said metallic conductor and said insulating jacket and coating said at least one metallic conductor, said powder serving to prevent any moisture which might enter the cable from traveling longitudinally along the cable beneath said jacket in corrosive contact with said metallic conductor.
Claim 2
Dependent Claim
66 words
A corrosion-resistant cable comprising at least one metallic conductor, a polymeric insulating jacket surrounding said conductor, and a corrosion-inhibiting hydrophobic powder disposed between said metallic conductor and said insulating jacket and coating said at least one metallic conductor, said powder serving to prevent any moisture which might enter the cable from traveling longitudinally along the cable beneath said jacket in corrosive contact with said metallic conductor.
Claim 3
Dependent Claim
20 words
A corrosion-resistant cable as claimed in claim 1, wherein said corrosion-inhibiting hydrophobic powder is comprised of flowable, smooth-surfaced hydrophobic particles.
Claim 4
Dependent Claim
16 words
A corrosion-resistant cable according to claim 1, wherein said corrosion-inhibiting hydrophobic powder comprises hydrophobic fumed silica.
Claim 5
Dependent Claim
21 words
A corrosion-resistant cable as claimed in claim 3, wherein said hydrophobic fumed silica has been surface coated with a hydrophobic agent.
Claim 6
Dependent Claim
17 words
A corrosion-resistant cable as claimed in claim 4, wherein said hydrophobic agent is a hydrophobic polyfunctional silane.
Claim 7
Dependent Claim
96 words
A corrosion-resistant cable comprising at least one metallic inner conductor, a dielectric material surrounding the inner conductor, a metallic shielding conductor surrounding the dielectric material and the inner conductor, a polymeric insulating jacket surrounding said shielding conductor and forming a protective outer covering for the cable, and a corrosion-inhibiting hydrophobic powder disposed between said metallic shielding conductor and said insulating jacket and coating said metallic shielding conductor, said powder serving to prevent any moisture which might enter the cable from traveling longitudinally along the cable beneath said jacket in corrosive contact with said metallic shielding conductor.
Claim 8
Dependent Claim
96 words
A corrosion-resistant cable comprising at least one metallic inner conductor, a dielectric material surrounding the inner conductor, a metallic shielding conductor surrounding the dielectric material and the inner conductor, a polymeric insulating jacket surrounding said shielding conductor and forming a protective outer covering for the cable, and a corrosion-inhibiting hydrophobic powder disposed between said metallic shielding conductor and said insulating jacket and coating said metallic shielding conductor, said powder serving to prevent any moisture which might enter the cable from traveling longitudinally along the cable beneath said jacket in corrosive contact with said metallic shielding conductor.
Claim 9
Dependent Claim
137 words
A corrosion-resistant cable comprising a metallic inner conductor, a polyolefin dielectric material surrounding the inner conductor, a metallic shielding tape surrounding the dielectric material and the inner conductor, and an open wire braid surrounding the metallic shielding tape so that a plurality of shallow pockets are formed adjacent the metallic shielding tape between the individual strands of the wire braid, the cable further comprising a corrosion-inhibiting hydrophobic powder coating said metallic shielding tape and dispersed in the pockets formed in said wire braid and a polyolefin insulating jacket surrounding said wire braid so that said corrosion-inhibiting powder is trapped in the pockets formed therein, said powder serving to prevent any moisture which might enter the cable from traveling longitudinally along the cable beneath said jacket in corrosive contact with said metallic shielding tape and said wire braid.
Claim 10
Dependent Claim
137 words
A corrosion-resistant cable comprising a metallic inner conductor, a polyolefin dielectric material surrounding the inner conductor, a metallic shielding tape surrounding the dielectric material and the inner conductor, and an open wire braid surrounding the metallic shielding tape so that a plurality of shallow pockets are formed adjacent the metallic shielding tape between the individual strands of the wire braid, the cable further comprising a corrosion-inhibiting hydrophobic powder coating said metallic shielding tape and dispersed in the pockets formed in said wire braid and a polyolefin insulating jacket surrounding said wire braid so that said corrosion-inhibiting powder is trapped in the pockets formed therein, said powder serving to prevent any moisture which might enter the cable from traveling longitudinally along the cable beneath said jacket in corrosive contact with said metallic shielding tape and said wire braid.
Claim 11
Dependent Claim
18 words
A corrosion-resistant cable according to claim 6 or 7, wherein said corrosion-inhibiting hydrophobic powder comprises hydrophobic fumed silica.
Claim 12
Dependent Claim
26 words
A corrosion-resistant cable according to claim 6 or 7, wherein said corrosion-inhibiting hydrophobic powder comprises a mixture of hydrophobic fumed silica powder and hydrophobic polyethylene powder.
Claim 13
Independent Claim
54 words
A method of making a corrosion-resistant cable having at least one metallic conductor, said method comprising coating the metallic conductor with a corrosion-inhibiting hydrophobic powder and then applying a polymeric insulating jacket around the powder-coated metallic conductor to form a protective covering which traps the hydrophobic powder as a layer against the metallic conductor.
Claim 14
Independent Claim
54 words
A method of making a corrosion-resistant cable having at least one metallic conductor, said method comprising coating the metallic conductor with a corrosion-inhibiting hydrophobic powder and then applying a polymeric insulating jacket around the powder-coated metallic conductor to form a protective covering which traps the hydrophobic powder as a layer against the metallic conductor.
Claim 15
Dependent Claim
28 words
A method according to claim 10 wherein the step of coating the metallic conductor with a corrosion-inhibiting hydrophobic powder comprises applying to the conductor hydrophobic fumed silica powder.
Claim 16
Dependent Claim
34 words
A method according to claim 10, wherein the step of coating the metallic conductor comprises tumbling a corrosion-inhibiting powder around the cable, which powder is a relatively dense powder that uniformly coats the conductor.
Claim 17
Dependent Claim
29 words
A method according to claim 10, wherein the step of coating the metallic conductor comprises applying to the conductor a hydrophobic fumed silica powder and a hydrophobic polyethylene powder.
Claim 18
Independent Claim
85 words
A method of imparting corrosion resistance to a cable having a metallic conductor comprising the steps of advancing a cable having an exposed metallic conductive surface along a predetermined path of travel to and through a coating station; contacting the exposed metallic conductive surface with a corrosion-inhibiting hydrophobic powder and forming a powder coating around the metallic conductor; and advancing the powder coated cable from the coating station to an extruder and extruding a jacket of polymeric insulating material around the powder coated metallic conductor.
Claim 19
Independent Claim
85 words
A method of imparting corrosion resistance to a cable having a metallic conductor comprising the steps of advancing a cable having an exposed metallic conductive surface along a predetermined path of travel to and through a coating station; contacting the exposed metallic conductive surface with a corrosion-inhibiting hydrophobic powder and forming a powder coating around the metallic conductor; and advancing the powder coated cable from the coating station to an extruder and extruding a jacket of polymeric insulating material around the powder coated metallic conductor.
Claim 20
Dependent Claim
31 words
A method according to claim 14, wherein the step of contacting the metallic conductive surface with a corrosion-inhibiting hydrophobic powder comprises applying to the conductive surface a hydrophobic fumed silica powder.
Claim 21
Dependent Claim
40 words
A method according to claim 14, wherein the step of contacting the metallic conductive surface with a corrosion-inhibiting hydrophobic powder comprises tumbling a corrosion-inhibiting powder around the cable, which powder is a relatively dense powder that uniformly coats the conductor.
Claim 22
Dependent Claim
35 words
A method according to claim 14, wherein the step of contacting the metallic conductive surface with a corrosion-inhibiting hydrophobic powder comprises applying to the surface a hydrophobic fumed silica powder and a hydrophobic polyethylene powder.
Claim 23
Dependent Claim
75 words
A corrosion-resistant cable comprising at least one metallic conductor, a polymeric insulating jacket surrounding said conductor, and a corrosion-inhibiting hydrophobic powder disposed between said metallic conductor and said insulating jacket, said corrosion-inhibiting hydrophobic powder comprising a mixture of hydrophobic fumed silica and hydrophobic polyethylene powder, said corrosion-inhibiting hydrophobic powder serving to prevent any moisture which might enter the cable from traveling longitudinally along the cable beneath said jacket in corrosive contact with said metallic conductor.
Claim 24
Dependent Claim
75 words
A corrosion-resistant cable comprising at least one metallic conductor, a polymeric insulating jacket surrounding said conductor, and a corrosion-inhibiting hydrophobic powder disposed between said metallic conductor and said insulating jacket, said corrosion-inhibiting hydrophobic powder comprising a mixture of hydrophobic fumed silica and hydrophobic polyethylene powder, said corrosion-inhibiting hydrophobic powder serving to prevent any moisture which might enter the cable from traveling longitudinally along the cable beneath said jacket in corrosive contact with said metallic conductor.
References Cited (Backward Citations)
US463079A
Cited
US3180926A
Cited
US3711621A
Cited
US4110137A
Cited
US3875323A
Cited
US3963854A
Cited
US4004077A
Cited
US4201250A
Cited
US4206790A
Cited
US4419157A
Cited
US4472597A
Cited
US4435693A
Cited
US4599121A
Cited
US4621169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-19 | 1991-04-20 | 1991-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-19 | 1995-04-20 | 1995-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-19 | 1999-04-20 | 1999-10-20 | $7700.00 | Window Closed / Lapsed |