WHEELS WITH MOULDED TYRES

摘要

Tyres are formed by moulding polyurethane or other elastomers over a foam core 4 on a complete bicycle or other wheel to provide a puncture proof tyre. Tyres are also formed by moulding a self skinning polyurethane foam on a rim. The mould comprises two annular flexible polyurethane halves 7, 7a, and a polyurethane foam flexible seal 12. The mould is supported in a mould box 9.