Semi-hollow tire has an internal circumferential chamber filled with non-gaseous, foamed or fiber material

摘要

The tire(1) is for mounting on a supporting tube and has rolling section comprising a blunt wedge-shape or a dome-shape. A ring shaped chamber(4) in the rolling section is filled with a non-gaseous material(5) different to that from which the tire is manufactured. Material in the hollow chamber(4) is an economic filler(5) such as an expanded foam or polystyrene foam. INORGANIC CHEMISTRY - An alternative filling is a fiberous material, e.g. hemp. An independent claim is included for a manufacturing process for the semi-hollow tire in which a ring-shaped core of filler material(5) is positioned in a molding tool and polyurethane is cast around the core to mold the tire structure.