Patent ID: 7021167
Filing Date: 2006-04-04
Classification: B66C,F03D,F05B,F16C,Y02E,Y10T

Abstract:
1. A rotary joint mechanism connecting a rotatable machine part to a fixed machine part comprising: a bearing outer ring connected to the rotatable machine part, the bearing outer ring being integrally formed with a bearing and having an outer surface; an inner ring connected to the fixed machine part, the bearing outer ring being rotatable with respect to the inner ring; the bearing outer ring surrounding the inner ring; at least one motor driven cable spindle; at least one cable element extending from the at least one motor driven cable spindle and to the bearing outer ring, the at least one cable element extending around and contacting the outer surface of the bearing outer ring to transfer a driving force from the at least one motor driven cable spindle to the bearing outer ring to rotate the bearing outer ring relative to the inner ring; and wherein the outer surface of the bearing outer ring is provided with a helically extending groove, the at least one cable element being positioned in the groove.