B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
18/685
B29D 29/08 (2006.01) B29C 43/22 (2006.01) B29C 47/02 (2006.01) B29C 47/12 (2006.01)
Patent
CA 1213113
ABSTRACT OF THE DISCLOSURE An annular depression on the circumference of a rotatable moulding wheel is closed with a part-circular covering to form a mould cavity into the commencement of which synthetic plastics material is introduced with an ex- truder nozzle. For the production of reinforced toothed belt with a circumference larger by any desired amount than the moulding wheel circumference, a moulding ring consisting of a flexible band, the diameter of which is larger than the moulding wheel diameter, is wound on its exterior formed with toothing with a force-transmission element coil, the ends of which are fixed on the moulding ring. The moulding ring is inserted between moulding wheel and covering into the moulding wheel depression and after the laying of the covering upon the mould- ing wheel and application of the extruder nozzle to the mould cavity commencement, the synthetic plastics material is intro- duced between covering and moulding ring during one revolution of the moulding ring, until the commencement of the reinforced synthetic plastics continuous length issuing from the mould cavity on the moulding ring is fused together with the end of the continuous length on reintroduction into the mould cavity commencement. Then the moulding ring with the endless toothed belt is removed from the moulding wheel and separated from the finished endless reinforced toothed belt.
444092
Breco Kunststoffverarbeitungs G.m.b.h. & Co. Kg
Marks & Clerk
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