Tire envelope sealing apparatus for recapping tires
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United States of America Patent
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Nov 25, 1986
Grant Date -
N/A
app pub date -
Mar 25, 1985
filing date -
Mar 25, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device for use in vulcanizing a premolded, precured tire tread to a tire casing in a tire retreading operation, for sealing a retreading envelope against the tire carcass in the bead area of the tire. The device comprises a pair of rigid circular ring members each sized to fit against the exterior bead portion of the tire casing, with the envelope interposed between the ring and the tire casing. A series of interconnecting springs are attached to the rings at circumferentially spaced apart locations to hold them against the tire in the bead area, and spacers attached to at least some of said springs maintain a uniform distance between the bead portions of the tire casing. A compression member on an edge of each ring member provides increased sealing pressure against the envelope on the tire.
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