| 摘要 |
1,233,265. Pneumatic tyres. FARBENFABRIKEN BAYER A.G. 4 June, 1968 [2 June, 1967], No. 26442/68. Heading B7C. Pneumatic tyres of synthetic resin are produced by winding a set of spaced wires or yarns 6 around a substantially toroidal mould to form a spacing layer, winding a second set of wires or yarns 3 over the first set to provide a reinforcing layer spaced from the mould, and moulding the tyre over both layers, the mould being provided with depressions, such that the inner surface of the moulded tyre has raised portions 5. The tyre material is preferably polyurethane, and the spacing layer may be of yarns of the same material. The wires or yarns of either layer may be coated with elastomer to ensure satisfactory bonding to the tyre material. |
