PROCESS FOR MANUFACTURING TYRES FOR VEHICLE WHEELS
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United States of America Patent
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Jul 18, 2017
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Apr 8, 2009
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Abstract
In the building of a carcass structure for tyres of vehicle wheels, the step of reinforcing with a loop at least one annular anchoring structure (10) associated at the axially opposite end edges of a carcass ply is carried out. Said reinforcement step is carried out on at least one radially expandable/contractable service drum (107a, 107b) and comprises the steps of: setting the service drum (107a, 107b) to a predetermined radial dimension selected according to the fitting diameter of the tyre to be manufactured, depositing the loop (5) on the service drum (107a, 107b), loading the annular anchoring structure (10) onto the service drum (107a, 107b) in a radially outer position with respect to the loop (5), radially expanding the service drum (107a, 107b) up to lock in position the annular anchoring structure (10), rotating the service drum (107a, 107b) about a longitudinal axis (X-X) thereof and, during such a rotation, turning the loop (5) up about the annular anchoring structure (10).
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