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Drum for the formation of uncured tire sections thereon

Image Number 4 for United States Patent #5127979.

The invention features a kit for the construction of a tire forming drum. The tire forming drum has, in an assembled configuration, a tire forming surface for the formation of a tire preform thereon. The kit is comprised of a plurality of assemblable and disassemblable individual and discrete components. Included in the components are a removable mandrel having a substantially central axis, and a peripheral surface substantially encircling the central axis. Also included in the components is a plurality of arcuate drum segment members for substantially encircling, in the assembled configuration, the above-mentioned mandrel. Each of the plurality of arcuate drum segment members have an inner surface which, in the assembled configuration, at least partially contacts the peripheral surface of the mandrel, thereby substantially preventing inward radial movement of the plurality of arcuate drum segment members towards the central axis of the mandrel. Another component is a locking arrangement for substantially preventing outward movement of the plurality of arcuate drum segment members away from the central axis in the assembled configuration. Also included in the components is an arrangement for translating at least one of the plurality of arcuate drum segment members towards the central axis upon removal of the removable mandrel.

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