Electricity: conductors and insulators – Anti-inductive structures – Conductor transposition
Patent
1985-05-01
1986-07-01
Grimley, A. T.
Electricity: conductors and insulators
Anti-inductive structures
Conductor transposition
174 78, 174109, 174DIG8, H01B 1106
Patent
active
045981655
ABSTRACT:
A sleeve for installation on an electrical conductor for shielding the conductor with respect to the environment in which the conductor resides against electromagnetic interference (EMI). The sleeve is formed of a tubular member made of heat recoverable material and having, in the non-recovered condition, a large central opening through which the wire to be shielded can be passed. The interior of the tubular member is lined with a plurality of conductive leaves or pellicles. One circumferential margin of the pellicles is adhered to the internal surface of the tubular member and the remainder of each pellicle is unattached and remains in overlapping relationship to an adjacent pellicle. When the sleeve is positioned over a conductor to be shielded and energy is applied to the tubular member to effect its recovery, the unattached portions of the pellicles move with respect to one another as the tubular member shrinks to uniformly circumscribe the conductor with an electrically conductive shield. A fusible coating on each of the pellicles that fuses during the shrinking process and then solidifies so as to enhance the structural and electrical continuity of the shield formed by the device. A plurality of small diameter wires, one being attached to each of the pellicles can be employed to effect electrical connection of the pellicles with external circuit points, such as the shield existing on conventional cable and or a grounded terminal.
REFERENCES:
patent: 7607 (1815-12-01), Rosselli
patent: 3467761 (1969-09-01), Plummer
patent: 3576387 (1971-04-01), Derby
patent: 3790697 (1974-02-01), Buckingham
patent: 4246438 (1981-01-01), Gozlan
Grimley A. T.
Hill Robert C.
Nimmo Morris H.
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