Method and apparatus for forming a core of plies, belts and beads and for positioning the core in a mold for forming an elastomeric tire and the formed elastomeric tire
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United States of America Patent
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Issued Date -
Dec 8, 2005
app pub date -
Jun 4, 2004
filing date -
Jun 4, 2004
priority date (Note) -
Abandoned
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Abstract
A method and apparatus for forming a core of plies, belts and beads and for positioning the core in a mold for forming an elastomeric tire. The core is built up on a mandrel of the inner mold formed by hard foam core segments that are positioned on a bottom hub plate and around a hub fitted to the center of the bottom hub plate, and with a top hub plate fitted thereover in alignment with flow passages formed therethrough. Plies are first wound on a porous spacer, across the mandrel and the ply ends are folded around a tire bead and back upon themselves. Woven belt segments that form a belt whose cords form an angle of approximately twenty four degrees to the circumference and slope oppositely, are wound over a spacer wrap that has been applied over the plies outer circumference, and tire cord is wrapped over an outer spacer wrap. The inner mold and core are fitted in an outer mold and the assembly positioned in a casting well to receive a flow of an elastomeric material directed therein as the mold is spun up.
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