Patent ID: 6942828

Claim:
Method of manufacturing a toothed belt provided with teeth, wherein a moulding cavity with an inlet and an outlet is defined between a rotating moulding wheel, which is provided in its periphery with an annular channel, which is defined by lateral cheeks and has a base and a breadth and a height, and an endless moulding belt, which also rotates and surrounds a proportion of the periphery of the moulding wheel and engages its lateral cheeks at that point, the moulding wheel being provided in the base of its channel with recesses, the shape of which corresponds to the shape of the teeth of the toothed belt, a mouldable and solidifiable plastic material is introduced into the inlet of the moulding cavity and “lost cores” which extend transversely over the channel from lateral cheek to lateral cheek, are introduced upstream of the inlet of the moulding cavity into the channel in the moulding wheel such that, in at least some of the recesses in the moulding wheel, they are embedded all around in the plastic material of the toothed belt over at least a proportion of their length.