Tire building drum
AssigneeBridgestone Corporation
InventorLuca Farinola
Life of this patent
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Abstract
A drum (1) for building tires (2), the drum (1) having two half-drums (12), each of which has an expandable bead clamping device (20), and at least one shaping bladder (27) and a turn-up bladder (33) fixed to an outer tubular body (16) of the half-drum (12) on opposite sides of the respective bead clamping device (20); each turn-up bladder (33) having an outer annular lip (34) extending, at rest, along the respective half-drum (12) and covering the respective bead clamping device (20) and substantially the whole respective shaping bladder (27).
Claims4
A drum for building tires, the drum comprising two half-drums, each of which comprises a substantially cylindrical outer tubular body, a bead clamping device expandable through said tubular body, at least one shaping bladder, first fastening means for connecting said shaping bladder to said tubular body, a turn-up bladder having an outer annular lip extending towards the respective shaping bladder, and second fastening means for connecting said turn-up bladder to said tubular body on the opposite side of the respective bead clamping device with respect to said shaping bladder;
- wherein each said annular lip extends, at rest, along the respective half-drum to cover the respective said bead clamping device and a substantial portion of the respective shaping bladder.
Dependencies are inferred from the claim text.