Expandable tire building former
AssigneeW & A Bates Limited
InventorAnthony G. Goodfellow
Life of this patent
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Abstract
A method and apparatus for use at the stage of a radial tire building process at which a tread and breaker, and sidewall rubbers, are added to the expanded carcass. A tread assembly is built, comprising tread rubber breaker and sidewall rubbers and is then located around the carcass which is then expanded into the tread assembly. A tread assembly former has a central portion expansible to bring side portions to a frusto-conical shape.
Claims9
An expandable tire building former which in one state has a cylindrical shape and in another state has a frusto-conical shape and which comprises a cylindrical central portion formed from a plurality of radially expandable axially extending central protion segments;
- two side portions located one on each axial side of the central portion each formed from a plurality of axially extending side portion segments, the axially inner ends of the side portion segments of each side portion being connected to the adjacent axially outer ends of the central portion segments by inter-engaging tongues and grooves so that the side portion sgements can pivot relative to the central portion segments.
Dependencies are inferred from the claim text.