| 摘要 |
<p>PCT No. PCT/GB88/00984 Sec. 371 Date May 1, 1990 Sec. 102(e) Date May 1, 1990 PCT Filed Nov. 14, 1988 PCT Pub. No. WO89/04259 PCT Pub. Date May 18, 1989.The reinforcement for the bead of e.g. a pneumatic type, a rolling lobe diaphragm or an air spring is constructed by winding onto a mandrel or former superimposed layers alternately of unsheathed wire and flat, uncured rubber strip. Rubber is wound on before wire winding commences and continues after wire winding stops, so that the assembly exposes no cut wire end. After the winding operation the assembly is subjected to heat and pressure with all the wire embedded in and surrounded by an integrated, vulcanized rubber body. The rubber layers may be parallel with and on opposite sides of the layers of spaced wire windings or a given rubber winding may have wire windings on its radially opposite sides. The windings, both of rubber and wire, may be discrete loops or may be made by helically winding a single rubber strip or wire. The shape of the assembly as well as the volume of rubber at any position therein may be controlled by varying the tension under which the rubber strip and/or the wire is wound.</p> |
