Abstract: An apparatus is described for providing an electrical conduction path between two contact locations rotatable one with respect to the other. A flat ribbon cable having a plurality of electrical conductors and being wound in the manner of a coiled spring, is connected to the contact locations by way of connection lines serially connected to the ends of the flat ribbon cable. To protect the flat ribbon cable from mechanical damage at each of its ends, an end portion of each of the electrical conductors is serially connected to an end portion of one of a plurality of connection conductors of the connection line at a connection location, and a connection assembly is formed about the end portions of the serially connected conductors.

Abstract: A method is described for making an electrical through connection between a first conduction line comprising a flat conductor to a second conduction line comprising a round conductor. The steps of such method comprise removing end portions of insulation layer from the flat conductor and the round conductor; placing a positioning ring about the exposed end of the round conductor; bonding the round conductor to the flat conductor; extending the bonded conductors with the positioning ring into an injection molding apparatus and axially fixing the round conductor by compressive engagment of the positioning ring by a plunger element; and injecting a plastic material into the injection molding apparatus to form an insulating seal longitudinally about the bonded conductors and the positioning ring.

Abstract: A device is described for transferring current between two contact points (6, 8) which are movable with respect to each other without the use of a sliding contact. A ribbon cable (10) wound in the manner of a spring housing is connected between the two contact points (6, 8). To protect the ribbon cable (10) from kinking, a guide (11) is arranged at each of the two contact points (6, 8), the guides closely surrounding the ribbon cable (10). The guide (11) is long in proportion to its width.