Retread ring

Details Retread ring Retread ring

B - Operations, Transporting

29

D

18/137

B29D 30/54 (2006.01)

Patent

CA 1322836

ABSTRACT This invention relates to a retread curing ring apparatus for mounting on a tire retread assembly which comprises a tire carcass having a retread area, integral side walls with inner edges, a preformed tread strip positioned on the retread area, and a flexible envelope or bag surrounding the entire re- tread assembly. The retread curing ring apparatus is positioned adjacent to each side of the tire carcass. The curing ring apparatus comprises a circular body with a recess adjacent to its bottom edge and posi- tioned in said recess a circular elastomeric gasket having a channel at its bottom edge for attachment to the curing ring. The gasket is prepared from a plas- tic or rubber material and comprises a plurality of circumferential ribs adjacent the bead of the tire carcass which enables the clamp assemblies mounted circumferentially on the curing ring to hold the curing ring and the tire assembly in an airtight engaged position during the retread process.

587339

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