Title: Adaptor for feeding current to electrical contact rails

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Abstract: An adaptor, for insertion into a power distribution rail to feed current to the rail, comprises a housing which is shaped and dimensioned to permit the adaptor to be inserted into the open bottom of the rail in a predetermined orientation relative to the rail and thereafter to be rotated through a limited angle between laterally spaced facing edges of opposing webs in the rail to turn supporting clips extending from the adaptor into support channels in the rail and to effect electrical contact between the adaptor and conductors carried by the rail. The adaptor housing comprises a pair of diametrically opposed cylindrical quadrants spaced from one another by a diametrical distance less than the distance between the laterally spaced facing edges of the rail web. The opposing ends of each cylindrical quadrant merge into a pair of flat planar sections which extend at substantially right angles to one another and which intersect the flat planar sections extending from the ends of the other cylindrical quadrant to define a pair of spaced substantially parallel edges located respectively between the opposing ends of the pair of cylindrical quadrants with the distance between the pair of edges being greater than the distance between the laterally spaced facing edges of the rail webs. The supporting clips extending from the adaptor are of elongated substantially rectangular configuration with the opposing elongated edges of each clip being disposed substantially parallel to a pair of the flat planar sections.


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