| 摘要 |
1276298 Pneumatic tyres DUNLOP HOLDINGS Ltd 23 July 1969 [23 July 1968] 35078/68 Heading B7C A pneumatic tyre comprises at least one ply 21, Fig. 3, of parallel cords turned up around a bead wire 22, and a reinforcing strip 23 of rubberized parallel-cord fabric overlapping the ply turn-up 25 and having its cords lying at the same angle to the mid-circumferential plane as the ply cords, the reinforcing strip being adhered to the ply in substantially the whole area of the overlap and being more flexible than the ply. The tyre may be cross-ply or radial with cords of textile filaments or steel wires. The reinforcing strip may lie on either side of the ply turn-up 25 and is joined to the turn-up by an adhesive rubber compound. The greater flexibility of the strip compared with the ply may be achieved by using less and/or smaller diameter filaments in the strip cords, or by spacing the cords more widely apart in the strip. A chafer strip 24 extends around the bead core 22 and a rubber filler 26 is provided between the chafer and the reinforcing strip. In other embodiments, the chafer extends only on the axially outer side of the bead core and a separate toe filler strip is provided either inside or outside the ply. |
