Patent ID: 7637744

Claim:
A rotary contact-connection assembly for electric cables, comprising an electrically non-conducting support; at least two mutually coaxial bearings configured coaxially and axially apart at the support; a continuous borehole that runs through the support axially relative to the bearings from a first support end to a second support end; a first of the two bearings being configured in a first end segment of the borehole in a first support segment adjacent to the first support end and comprises an inner element in turn fitted with a continuous axial bearing passage aperture; a first free space about an outer race of the first bearing to assure sufficient room for a first conductor of a first cable to be connectable to said outer race; an electrically conducting plug insertable into the axial bearing passage aperture of the inner element of the first bearing and, together with the inner element of the first bearing, defining an electrical plug-in connection and comprising a plug part to which a first electrical conductor of a second cable running from the second support end into borehole is connectable; at least one electrically conducting hookup muff mounted on a second support segment and runs as far as the second support end, a second borehole end segment of the borehole running through said second support segment, at least a second bearing of the bearings comprising an inner element jointly with which it is configured to the minimum of one hookup muff, said inside element of the second bearing leaving clear a hookup muff segment of said muff to which a second electric conductor of the first cable is insertable; a second free space about an outer race of the second bearing to leave enough room for the second electric conductor of the second cable to be connectable to the outer race; both said bearings are continuously electrically conducting from their outer races to the inner elements.