A rebar forming apparatus includes a malleable material supply station for continuously supplying a malleable planar material and a malleable material forming station for forming the malleable material into first and second corresponding shell portions and related rebar products. The apparatus also includes...http://www.google.fr/patents/US6493914?utm_source=gb-gplus-shareBrevet US6493914 - Reinforced composite product and apparatus and method for producing same
Reinforced composite product and apparatus and method for producing same