| 摘要 |
<p>In a built-up core for the bead of a car tyre, the wires (A,B,C) of each lay (8) of the built-up core (4) are of a trapezoidal cross section. Between the wires (A,B,C) of each lay (8) of wire and the wires (A,B,C) of the next, overlying lay (8) of the wires, there are wedge-shaped clearances (9). As a result, the wires (A,B,C) of each lay(8) of wire find a support on the edges of the wires of the underlying lay of wires so that they cannot be displaced against each other during the production of the tyre.</p> |
