Patent ID: 7931420

Claim:
A section element combination for connection to one or more of similar sections and tubes or bars having round or square cross-section, the section element combination comprising: a section body having an outer circumference defined by sections of flat surfaces and rounded sectors and having a preset diameter, said rounded sectors defining round outer surface engagement means configured for engagement with a round engagement part and said flat surfaces defining polygonal outer surface engagement means configured for engagement with a polygonal engagement part, and each flat surface having longitudinal groove with parallel borders forming an opening and undercuts on opposite side of said groove; connecting clamps for clamping connection with said section body, each connecting clamp defining at least one semi-cylindrical housing region with an inner surface in contact with each of said rounded sectors in a clamp position with a diameter corresponding to said circumference preset diameter of said section body and having a centering member extending into said semi-cylindrical housing region, said centering member having a semi-cylindrical head corresponding to the inner surface of semi-cylindrical housing region to fit the centering member in removable form to the semi-cylindrical housing region along at least one of said flat surfaces and a key depending therefrom to extend into the opening of any of the grooves of the section body to prevent said section body from turning.