US5206459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conductive polymeric shielding materials and articles fabricated therefrom
Assignee: Champlain Cable Corp
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Filing: 1991-08-21
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Granted: 1993-04-27
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Expires: 2011-08-21
Abstract
Abstract The present invention features a new shield material useful in the fabrication of shielded wire or cable articles. The conductive core of the wire and cable is layered with a shielding wrapping tape, foil or film. A shielding insulation compound can also be extruded over the conductive wire or cable core. Wire and cable articles containing the new shield material have an extended interference frequency attenuation range resulting from the improved shield layer. The shield material contains shaped ferrite particles dispersed within a polymeric binder, such as a fluorocarbon polymer. The shaped particles are generally spherical.
Inventors
- 👤 Mahmoud Aldissi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:22
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/20; H01F1/22; H01F1/24; H01F1/26; C; C08; C08K; C08K3/00; C08K3/18; C08K3/24; H01B; H01B11/00; H01B11/02; H01B11/06; H01B11/10; H01B11/1058; H01B11/1083
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
79 words
A shielded wire or cable article wherein EMI shielding is provided in a polymer shielding layer, comprising: a) at least one conductive core member; b) an insulation layer disposed over said at least one conductive core member; c) a shielding layer overlaying said insulation layer and comprising geometrically round shaped ferrite particles, or combinations of geometrically round shaped and non-geometrically round shaped ferrite particles, dispersed within a polymer matrix; and d) a jacket layer disposed over said shielding layer.
Claim 2
Dependent Claim
79 words
A shielded wire or cable article wherein EMI shielding is provided in a polymer shielding layer, comprising: a) at least one conductive core member; b) an insulation layer disposed over said at least one conductive core member; c) a shielding layer overlaying said insulation layer and comprising geometrically round shaped ferrite particles, or combinations of geometrically round shaped and non-geometrically round shaped ferrite particles, dispersed within a polymer matrix; and d) a jacket layer disposed over said shielding layer.
Claim 3
Dependent Claim
18 words
The shielded wire or cable article in accordance with claim 1, wherein said shaped ferrite particles are spherical.
Claim 4
Dependent Claim
34 words
The shielded wire or cable article in accordance with claim 1, wherein said polymer matrix is selected from a group of polymer materials consisting of: fluorocarbons, acrylates, fluorinated elastomers, fluorinated copolymers, and combinations thereof.
Claim 5
Dependent Claim
29 words
The shielded wire or cable article in accordance with claim 1, wherein said polymer matrix comprises a material having approximately 10 to 90% by weight of the shielding layer.
Claim 6
Dependent Claim
59 words
A shielded wire or cable article having EMI shielding, comprising: a) a conductive core member; b) an insulation layer disposed over said conductive core member; and c) a shielding layer overlaying said insulation layer and comprising geometrically round shaped ferrite particles selected from a group of spherical and cylindrical and combinations thereof, said particles dispersed within a polymer matrix.
Claim 7
Dependent Claim
59 words
A shielded wire or cable article having EMI shielding, comprising: a) a conductive core member; b) an insulation layer disposed over said conductive core member; and c) a shielding layer overlaying said insulation layer and comprising geometrically round shaped ferrite particles selected from a group of spherical and cylindrical and combinations thereof, said particles dispersed within a polymer matrix.
Claim 8
Dependent Claim
25 words
The shielded wire or cable article having EMI shielding in accordance with claim 5, further comprising: d) a jacket layer disposed over said shielding layer.
Claim 9
Dependent Claim
21 words
The shielded wire or cable article having EMI shielding in accordance with claim 6, wherein said ferrite particles are magnetite particles.
Claim 10
Dependent Claim
37 words
The shielded wire or cable article having EMI shielding in accordance with claim 5, wherein said polymer matrix is selected from a group of polymer materials consisting of: fluorocarbons, acrylates, fluorinated elastomers, fluorinated copolymers, and combinations thereof.
Claim 11
Dependent Claim
32 words
The shielded wire or cable article having EMI shielding in accordance with claim 5, wherein said polymer matrix comprises a material having approximately 10 to 90% by weight of the shielding layer
Claim 12
Dependent Claim
83 words
A shielded cable article having EMI shielding, comprising: a) at least two conductive core members, each of said respective core members having an insulation layer disposed thereover to form a respective insulated core member, said insulated core members being grouped or twisted together; and b) a shielding layer overlaying said grouped or twisted insulated core members, said shielding layer comprising geometrically round shaped and non-geometrically round shaped ferrite particles, said geometrically round shaped and non-geometrically round shaped particles dispersed within a polymer matrix.
Claim 13
Dependent Claim
83 words
A shielded cable article having EMI shielding, comprising: a) at least two conductive core members, each of said respective core members having an insulation layer disposed thereover to form a respective insulated core member, said insulated core members being grouped or twisted together; and b) a shielding layer overlaying said grouped or twisted insulated core members, said shielding layer comprising geometrically round shaped and non-geometrically round shaped ferrite particles, said geometrically round shaped and non-geometrically round shaped particles dispersed within a polymer matrix.
Claim 14
Dependent Claim
23 words
The shielded cable article having EMI shielding in accordance with claim 10, further comprising: c) a jacket layer disposed over said shielding 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) | 1996-04-26 | 1996-10-26 | 1997-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-26 | 2000-10-26 | 2001-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-26 | 2004-10-26 | 2005-04-27 | $7700.00 | Window Closed / Lapsed |