Patent ID: 7497072

Claim:
Energy guiding chain for guiding hoses and cables comprising, a number of chain links connected to each other in articulated fashion that are formed by mutually parallel side straps, said side straps having an inside and a narrow face are connected to form parallel side strap strands, said chain links having a length and an outer side; and cross-members connecting said side strap strands, where the side straps can be pivoted relative to each other about a pivoting axis common to two adjacent side straps, where the energy guiding chain can be traversed in such a way that it forms an upper strand, a lower strand, the upper and lower strand being connected in a loop via a deflection zone, said loop having an inside and where the upper strand lies on the lower strand, and where rollers are provided on at least some chain links of the upper strand and/or the lower strand, these rollers being arranged in such a way that they roll on running surfaces provided on the chain links of the opposite strand when the energy guiding chain is traversed, said rollers including an axis of rotation; characterized in that the axis of rotation of each of the rollers coincides with said pivoting axis of said two adjacent side straps.