Rigid Core for Making Tires
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United States of America Patent
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Issued Date -
Jan 27, 2011
app pub date -
Sep 30, 2008
filing date -
Oct 8, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A rigid core which at least partly defines a manufacturing form for the inside surface of a tire, the core comprising a plurality of circumferentially adjacent segments (10) arranged side by side in contact with each other via their transverse faces, said transverses faces of at least one segment being convergent radially away from the core, each of said segments comprising an attachment part (13) for attachment to a locking member for locking the various segments (10), said attachment part (13) being provided at the radially inner edge of each of the segments (10), in which core at least one electrical heating resistor (17) is moulded into each of the segments (10); the electrical resistor comprises a heating resistor wire (17) running in a steel tube (16), and said segment (10) is essentially made from a grade of cast iron whose melting point is below the melting point of said steel tube (16).
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