Patent US5262591A successfully refreshed from Google Patents.
US5262591A
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Inherently-shielded cable construction with a braided reinforcing and grounding layer
Assignee: United States Department of Energy
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Filing: 1992-06-19
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Granted: 1993-11-16
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Expires: 2012-06-19
Abstract
Abstract The present invention features a new "filter line" cable of very thin construction. The thinner cable has a reinforcing mesh layer that lends physical strength to the otherwise thinner, weakened cable. Additionally, the reinforcing mesh provides grounding and some shielding. The reinforcing mesh layer is made of a thin metal wire or metal-coated fibers. The filter line cable has a conductive core having a primary insulation layer. Over the primary insulation is a filtering layer made up of metal-coated ferromagnetic particles of ferrite or magnetite dispersed within a polymeric matrix such as Viton, a fluorinated elastomeric polymer. The ferromagnetic particles may be "spherical", to enhance the filtering effect. The filtering layer provides the "filter line" protection against internal RFI and microwave interferences traveling down the wire. Over the filtering layer is a layer of metal wire or metal-coated fibers, woven or served into a mesh. This layer shields the filtering layer and provides protection against external EMI signals. The reinforcing mesh layer is lightweight and provides a minimum of shielding coverage, i.e., approximately between 15 to 50% of the filter line layer; its primary purpose is to provide physical reinforcement and grounding.
Inventors
- 👤 Mahmoud Aldissi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:58
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: 20
Claim 1
Independent Claim
125 words
An ultra-thin filter line cable having a reinforcing mesh and grounding layer disposed over a filter layer, comprising: a conductive core; a primary insulation layer disposed over said conductive core; a filter line layer disposed over said primary insulation layer including metal-coated ferromagnetic particles disposed in a polymer matrix, said filter line layer having a thickness of approximately between 3 to 5 mils; a reinforcing and grounding layer disposed over said filter line layer, said reinforcing and grounding layer comprising a conductive mesh and providing approximately between 15-50% coverage of said filter line layer, said reinforcing and grounding layer enhancing cable shielding, providing physical strengthening of the ultra-thin cable, and providing grounding; and a jacket of at least one layer disposed over said reinforcing layer.
Claim 2
Dependent Claim
125 words
An ultra-thin filter line cable having a reinforcing mesh and grounding layer disposed over a filter layer, comprising: a conductive core; a primary insulation layer disposed over said conductive core; a filter line layer disposed over said primary insulation layer including metal-coated ferromagnetic particles disposed in a polymer matrix, said filter line layer having a thickness of approximately between 3 to 5 mils; a reinforcing and grounding layer disposed over said filter line layer, said reinforcing and grounding layer comprising a conductive mesh and providing approximately between 15-50% coverage of said filter line layer, said reinforcing and grounding layer enhancing cable shielding, providing physical strengthening of the ultra-thin cable, and providing grounding; and a jacket of at least one layer disposed over said reinforcing layer.
Claim 3
Dependent Claim
31 words
The ultra-thin filter line cable of claim 1, wherein said metal-coated ferromagnetic particles further comprise particles selected from a group of materials consisting of metal-coated ferrite, metal-coated magnetite and combinations thereof.
Claim 4
Dependent Claim
30 words
The ultra-thin filter line cable of claim 1, wherein said metal-coated ferromagnetic particles are coated with a metal selected from a group consisting of silver, nickel, copper, zinc and manganese.
Claim 5
Dependent Claim
18 words
The ultra-thin filter line cable of claim 2, wherein said metal-coated ferromagnetic particles are comprised of "spherical" particles.
Claim 6
Dependent Claim
36 words
The ultra-thin filter line cable of claim 1, wherein said jacket comprises at least one layer of material selected from a group of materials consisting of fluorinated polyethylene, carbon-filled fluorinated polyethylene, polytetrafluoroethylene polytetrafluoroethylene fused with polyimide.
Claim 7
Dependent Claim
19 words
The ultra-thin filter line cable of claim 5, wherein said jacket comprises two fused layers comprising polytetrafluoroethylene and polyimide.
Claim 8
Dependent Claim
20 words
The ultra-thin filter line cable of claim 1, wherein said jacket comprises three fused layers comprising polytetrafluoroethylene, polyimide and polytetrafluoroethylene.
Claim 9
Dependent Claim
24 words
The ultra-thin filter line cable of claim 1, wherein the wire of said mesh of said reinforcing and grounding layer comprises metal or metal-alloy.
Claim 10
Dependent Claim
22 words
The ultra-thin filter line cable of claim 8 wherein said metal or metal-alloy comprises silver, coated on said wire of said mesh.
Claim 11
Dependent Claim
16 words
The ultra-thin filter line cable of claim 1 wherein said conductive mesh comprises metal-coated fiber strands.
Claim 12
Dependent Claim
132 words
An ultra-thin filter line cable having a reinforcing and grounding layer disposed over a filter line layer, comprising: a conductive core; a primary insulation layer disposed over said conductive core; a filter line layer disposed over said primary insulation layer including spherical, silver-coated ferromagnetic particles disposed in an elastomeric polymer matrix, said filter layer having a thickness of approximately between 3 and 5 mils; a reinforcing and grounding layer disposed over said filter line layer, said reinforcing and grounding layer comprising a mesh of conductive wire or fiber strands, and providing approximately between 15-50% coverage of said filter line layer, said reinforcing and grounding layer enhancing shielding and providing physical strengthening and grounding of the ultra-thin filter line cable; and a jacket of at least one layer disposed over said shield layer.
Claim 13
Dependent Claim
132 words
An ultra-thin filter line cable having a reinforcing and grounding layer disposed over a filter line layer, comprising: a conductive core; a primary insulation layer disposed over said conductive core; a filter line layer disposed over said primary insulation layer including spherical, silver-coated ferromagnetic particles disposed in an elastomeric polymer matrix, said filter layer having a thickness of approximately between 3 and 5 mils; a reinforcing and grounding layer disposed over said filter line layer, said reinforcing and grounding layer comprising a mesh of conductive wire or fiber strands, and providing approximately between 15-50% coverage of said filter line layer, said reinforcing and grounding layer enhancing shielding and providing physical strengthening and grounding of the ultra-thin filter line cable; and a jacket of at least one layer disposed over said shield layer.
Claim 14
Dependent Claim
31 words
The ultra-thin filter line cable of claim 11, wherein said silver-coated ferromagnetic particles further comprise particles selected from a group of materials consisting of metal-coated ferrite, metal-coated magnetite and combinations thereof.
Claim 15
Dependent Claim
17 words
The filter line cable of claim 12, wherein said metal-coated ferromagnetic particles are blended with metal particles.
Claim 16
Dependent Claim
16 words
The filter line cable of claim 11, wherein said elastomeric polymer matrix comprises a fluorinated elastomer.
Claim 17
Dependent Claim
36 words
The filter line cable of claim 11, wherein said jacket comprises at least one layer of material selected from a group of materials consisting of fluorinated polyethylene, carbon-filled fluorinated polyethylene, polytetrafluoroethylene and polytetrafluoroethylene fused with polyimide.
Claim 18
Dependent Claim
18 words
The ultra-thin filter line cable of claim 11, wherein said metal-coated ferromagnetic particles are comprised of "spherical" particles.
Claim 19
Dependent Claim
18 words
The filter line cable of claim 15, wherein said jacket comprises two fused layers comprising polytetrafluoroethylene and polyimide.
Claim 20
Dependent Claim
19 words
The filter line cable of claim 15, wherein said jacket comprises three fused layers comprising polytetrafluoroethylene, polyimide and polytetrafluoroethylene.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1996-11-15 | 1997-05-17 | 1997-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-15 | 2001-05-17 | 2001-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-15 | 2005-05-17 | 2005-11-16 | $7700.00 | Window Closed / Lapsed |