Patent ID: 7131844

Claim:
A collector ring assembly, comprising: a non-electrically conductive, non-rotatable slip ring base having an outer surface, an upper end and a lower end; said outer surface of said slip ring base having a generally truncated-conical shape having a plurality of flat annular shoulders which are vertically and horizontally spaced-apart with respect to one another; said annular shoulders progressively decreasing in diameter from said lower end of said base to said upper end of said base; a flat, annular electrically conductive slip ring positioned on each of said annular shoulders; said slip rings having upper and lower surfaces; electrical wires secured to said slip rings and extending downwardly therefrom through said slip ring base; a non-electrically conductive slip ring brush holder rotatably secured to said slip ring base; a plurality of slip ring brushes positioned between said slip ring brush holder and said base and being rotatable therewith; said brushes being in electrical contact with said slip rings; electrical wires connected to said brushes and extending therefrom through said brush holder.