Patent ID: 7338571
Filing Date: 2008-03-04
Classification: B29D,B60C,Y10S

Abstract:
1. A method for manufacturing a tyre for vehicle wheels, comprising the steps of: producing a tyre; inserting a plurality of metal studs into seats provided in a vulcanization mould; retaining the plurality of metal studs in the seats; inserting the tyre into the mould; closing the mould; vulcanizing the tyre; and opening the mould to extract the vulcanized tyre; wherein the tyre comprises a tread band, wherein the mould includes means for retaining the plurality of studs in the seats, wherein, during the step of opening the mould, a predefined degree of clearance exists between lateral portions of each of the plurality of metal studs and one of the respective seats, wherein a design of the mould allows the plurality of metal studs to partially project from an external surface of the tread band of the vulcanized tyre, wherein the plurality of metal studs are oriented in a substantially perpendicular arrangement with respect to an external surface of the tread band, wherein the predefined degree of clearance is such that during the step of opening the mould, the plurality of metal studs maintain the substantially perpendicular arrangement, wherein the retaining means includes a magnet, which exerts a magnetic force, such that the studs are retained by said magnetic force, and wherein an abutting shoulder of each stud engages the internal surface of the mould such that the stud never comes into contact with the magnet.