Electricity: conductors and insulators – Anti-inductive structures – Conductor transposition
Patent
1986-01-23
1987-04-07
Grimley, Arthur T.
Electricity: conductors and insulators
Anti-inductive structures
Conductor transposition
174 48, H05K 900
Patent
active
046563130
ABSTRACT:
A method, and apparatus for practicing the method, is provided for the transit of one or more cables through an opening in a bulkhead while preventing electromagnetic interference and electromagnetic pulse energy from passing through the opening. A housing of electrically conductive material is positioned in the opening and secured around its full perimeter in electrically conductive contact with the bulkhead. The sheathing of each cable is treated so that the conductive shield of each cable is exposed. The cables pass through the housing with their exposed shield being within the interior of the housing. The end portions of the housing are sealed, such as by the use of deformable material. Electrically conductive material, such as shot, granules, powder, grease, liquids or the like, is used to fill the interior of the housing to form conductive paths between the shield of each cable and the housing. The material may be in the form of particulates, semi-liquid, or liquid, including conductive coatings.
REFERENCES:
patent: 3322885 (1967-05-01), May et al.
patent: 4291195 (1981-09-01), Blomqvist et al.
Brown David O.
Moore Rogers A.
O'Brien Joseph R.
General Signal Corporation
Grimley Arthur T.
Hubbard Robert R.
Kleinman Milton E.
Tone D. A.
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