Accessory RF shields for multiple-line ribbon cables

Details Accessory RF shields for multiple-line ribbon cables Accessory RF shields for multiple-line ribbon cables

1990-02-14

1991-07-09

Nimmo, Morris H.

Electricity: conductors and insulators

Anti-inductive structures

Conductor transposition

174117F, 174117FF, H01B 734, H01B 708

Patent

active

050307940

ABSTRACT:
The disclosed accessory RF shield has unitized conductive and insulating barrier sheets, sized to correspond lengthwise to the axial length of a ribbon cable to be shielded and widthwise between opposite side edges to completely encircle the ribbon cable and present overlapped inner and outer side edge layers adapted to be connected together for forming a field connection. The disclosed improved field connection has specific preformed structures, including: (1) that the barrier sheets have a lengthwise prefold therein effective to accurately size the inner side edge layer and allow it during field installation to be positioned accurately over the ribbon cable, whereupon further the outer side edge layer may also then be accurately formed when folded around the ribbon cable; (2) a preformed lengthwise narrow bulged side edge conductive band on the inner side edge layer; (3) a preformed lengthwise narrow bulged side edge insulating band on the outer side edge layer; and (4) a lengthwise strip of adhesive on the outer side edge layer inwardly adjacent the strip of adhesive. When the adhesive strip is pressed against the insulating sheet of the inner side edge layer inwardly adjacent the conductive band, the conductive sheet of the outer side edge layer bows over and contacts the bulged conductive band to define an encircling electrical containment around the ribbon cable, and the insulating band on the inner side edge layer is biased against the insulating sheet on the inner side edge layer to define an encircling insulating containment around the ribbon cable.

REFERENCES:
patent: 4281211 (1981-07-01), Tatum et al.
patent: 4409427 (1983-10-01), Plummer, III
patent: 4477693 (1984-10-01), Krabec et al.
patent: 4572922 (1986-02-01), Plummer, III
patent: 4596897 (1986-06-01), Gruhn
patent: 4734542 (1988-03-01), Klein
patent: 4737598 (1988-04-01), O'Connor
patent: 4791236 (1988-12-01), Klein et al.

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