Electricity: conductors and insulators – Anti-inductive structures – Conductor transposition
Patent
1984-03-12
1986-06-24
Grimley, Arthur T.
Electricity: conductors and insulators
Anti-inductive structures
Conductor transposition
174115, 174117F, 174117A, 428209, 428344, H01B 734
Patent
active
045968977
ABSTRACT:
An electrical shielding tape comprises a polyester backing layer, and a metallic layer having an adhesive on the exposed surface thereof, the adhesive being disposed in an interrupted layer which defines both exposed open patches, or contact pads, and coated bonding areas thereon. The tape is constructed for use in a shielded cable of the type having at least one conductor wire and an uninsulated drain wire, wherein the tape is wrapped around the conductor and drain wires with the metallic surface of the tape facing inwardly and with the tape adhesively secured to the conductor and drain wires by means of the adhesive on the metallic surface thereof. Effective electrical contact between the tape and the drain wire is achieved in the open patches, or contact pads, which contact the drain wire, and therefore the tape can be grounded to achieve the desired shielding effects simply by connecting the drain wire to a ground terminal. Preferably the exposed contact areas or patches are substantially unconnected on the inwardly facing metallic surface so that the adhesive effectively seals the cable against moisture penetration.
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Grimley Arthur T.
Neptco Incorporated
Nimmo Morris H.
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