Plastic article or earthenware shaping or treating: apparatus – Product or preform repair or restoring means – Tire recapping – rebeading or sidewall replacing means
Patent
1987-12-30
1989-07-25
Chiesa, Richard L.
Plastic article or earthenware shaping or treating: apparatus
Product or preform repair or restoring means
Tire recapping, rebeading or sidewall replacing means
156 96, 1563941, 156398, 156909, 425 58, B29D 3054
Patent
active
048508349
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 retread 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 positioned 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 plastic 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.
REFERENCES:
patent: 3184794 (1965-05-01), Sherkin
patent: 3689337 (1972-09-01), Schelkmann
patent: 3793116 (1974-02-01), Schelkmann
patent: 3883382 (1975-05-01), Pelletier
patent: 3886028 (1975-05-01), Hindin et al.
patent: 4309234 (1982-01-01), Witherspoon
patent: 4545750 (1985-10-01), Sarumaru
patent: 4579619 (1986-04-01), Symmes et al.
patent: 4624732 (1986-11-01), King
patent: 4626300 (1986-12-01), Barefoot
Hinson Wilburn W.
Inman David D.
Russell Dennis A.
Chiesa Richard L.
The Hercules Tire and Rubber Company
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