Power-track coupling

A coupling for use with a U-section longitudinally extending power track having a floor and a pair of side walls defining a longitudinally and transversely open retaining channel and provided on the side walls with respective dielectric support rails each carrying a respective longitudinally extending main conductor transversely exposed in the slot and connected to phase or ground, the coupling comprising:

• a dielectric coupling housing extending along an axis and having center structure defining a center plane perpendicular to the axis and end formations projecting axially oppositely from the center structure, each of the end formations being fittable longitudinally into the channel at an end of the power track to an insertion depth determined by the center structure, the housing being substantially symmetrical to the center plane;
• two L-section and longitudinally extending metallic contact strips carried on and transversely limitedly movable in a predetermined transverse direction in the dielectric housing, the contact strips each having two L-legs of which one extends in the predetermined transverse direction and forms a pair of transversely projecting contacts longitudinally symmetrically flanking the center structure, the other L-leg of each contact strip extending substantially perpendicular to the predetermined transverse direction and juxtaposed with a respective guide face of the housing;
• and
• respective L-section sheet-metal guide elements fitted with the contact strips and each having one flat L-leg lying between the other L-leg of the respective contact strip and the respective guide face and another L-leg formed as a V-shaped spring having a pair of ends longitudinally symmetrically flanking the center plane, bearing in the predetermined transverse direction on the respective other L-leg, and biasing the respective contact strip and its contacts transversely outward.