US3794750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shielded cable
Assignee: Boston Insulated Wire and Cable Co
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Filing: 1973-07-27
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Granted: 1974-02-26
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Expires: 1993-07-27
Abstract
Abstract A shielded electric cable is described in which drain wires are incorporated into a shielding tape consisting of a metallic foil bonded to a non-conductive base strip. In one form, the drain wires are held in contact with the foil surface by fixing them between the foil and the base strip. The shielding tape is helically or longitudinally wound around the insulated conductors to provide a continuous conductive shielding surface. At the terminal point, the exposure of one or more drain wires provides a convenient connection from the foil to a grounding terminal.
Inventors
- 👤 A Garshick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:30
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; H; H01; H01B; H01B7/00; H01B7/17; H01B7/18; H01B7/26; B32B15/20; B32B7/00; B32B7/04; B32B7/12; H01B9/00; H01B9/02; H01B9/023; H01B9/028
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
82 words
A shielded electric cable comprising: a. A central elongated conductor; b. Insulation surrounding said conductor; c. A shield consisting of a laminated tape helically wound around said insulation to form a continuous conductive surface, said tape comprising a flexible non-conductive base strip, a metallic foil adhesively bonded to said base strip, and at least one longitudinal drain wire in continuous electrical contact with said foil interposed between said foil and said base strip; and d. An insulating outer layer surrounding said shield.
Claim 2
Dependent Claim
82 words
A shielded electric cable comprising: a. A central elongated conductor; b. Insulation surrounding said conductor; c. A shield consisting of a laminated tape helically wound around said insulation to form a continuous conductive surface, said tape comprising a flexible non-conductive base strip, a metallic foil adhesively bonded to said base strip, and at least one longitudinal drain wire in continuous electrical contact with said foil interposed between said foil and said base strip; and d. An insulating outer layer surrounding said shield.
Claim 3
Dependent Claim
51 words
The shielded cable of claim 1 in which a plurality of said drain wires are held in electrical contact with said metallic foil by at least one non-conductive holding strip which encloses said drain wires and is adhesively bound to said foil along both sides of each of said drain wires.
Claim 4
Dependent Claim
16 words
The shielded cable of claim 1 in which said shield is longitudinally wound around said insulator.
Claim 5
Dependent Claim
33 words
The shielded cable of claim 1 in which said base strip consists of a polyester film, said metallic foil consists of aluminum foil, and said drain wire consists of a tinned copper wire.
Claim 6
Dependent Claim
46 words
A shielding tape for use in an electric cable comprising a flexible, non-conductive base strip, a metallic foil adhesively bonded to said base strip, and at least one longitudinal drain wire disposed in continuous electrical contact with said foil between said foil and said base strip.
Claim 7
Dependent Claim
46 words
A shielding tape for use in an electric cable comprising a flexible, non-conductive base strip, a metallic foil adhesively bonded to said base strip, and at least one longitudinal drain wire disposed in continuous electrical contact with said foil between said foil and said base strip.
Claim 8
Dependent Claim
49 words
The shielding tape of claim 5 in which said drain wires are held in continuous electrical contact with said metallic foil by a plurality of non-conductive holding strips which enclose said drain wires and are adhesively bound to said foil along both sides of each of said drain wires.
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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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |