Spoked wheel of synthetic material and method of making therefor

A wheel of synthetic material having an injection-molded center part including a hub as well as having spokes and a rim integral therewith;

• said rim including main rim walls having a radially outwardly open, approximately U-shaped rim cross section with a rheological cross-sectional area thereof and being unitary with said spokes at spoke connection locations on said rim, said hub also being unitary with said spokes and being the injection-molded center part of the wheel, said U-shaped rim cross section including a base element, the improvement therewith which comprises:
• said rim being provided with a plurality of circumferentially extending additional rim wall elements of synthetic material between all of said spokes;
• each of said additional rim wall elements leading from said spoke connection location of a given spoke to the middle of a rim portion located between two adjacent spokes and each of said wall elements being provided, in comparison with said main rim walls with respect to the rheological cross-sectional area thereof, with an advance-flow cross-section area;
• the synthetic material in each of said additional rim wall elements at the middle of said rim portion, where two of said wall elements join one another, and the synthetic material in said main rim walls of said rim portion between said two adjacent spoke connection locations being free from cold flow seams, in which each of said additional rim wall elements is an approximately rib-shaped widened portion of said main rim walls which projects radially outwardly from an inner surface of said base element of the rim cross section and extends in the circumferential direction of said rim beyond said spoke connection locations on said rim.