Tire envelope sealing apparatus for recapping tires

Details Tire envelope sealing apparatus for recapping tires Tire envelope sealing apparatus for recapping tires

1985-03-25

1986-11-25

Boland, Lois E.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Tire body building type

156 96, 156909, 425 17, 425 21, B29C 3502, B29D 3056

Patent

active

046247327

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.

REFERENCES:
patent: 3884740 (1975-05-01), Schelkmann
patent: 4153497 (1979-05-01), Budrioli
patent: 4274897 (1981-06-01), Barefoot
patent: 4299647 (1981-11-01), DeHaven
patent: 4309234 (1982-01-01), Witherspoon

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