Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1976-12-29
1978-10-31
Kittle, John E.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156 731, 211 23, 219 1053, 219 1055R, 219 1063, 224 4212, 264 23, 4251742, B29H 504, B29H 1736
Patent
active
041233069
ABSTRACT:
The specification discloses a method and system for retreading tires wherein an uncured gum layer disposed between a vehicle tire carcass and a pre-cured tire tread is vulcanized by RF energy. An annular air bladder is received within the tire carcass and includes an annular conductive grounding strip. A hub is received within the center opening of the tire carcass and connects to the grounding strip. A chamber capable of withstanding high pressures is dimensioned to receive the tire carcass. A shaft is horizontally rotatably disposed in the chamber and is adapted to connect to the hub. Drive structure extends through the wall of the chamber in order to rotate the shaft at a predetermined speed. A source of pressure is provided for pressurizing the interior of the chamber. An RF antenna extends from the chamber to a position adjacent the tire tread when the tire carcass is mounted for rotation about the shaft. A source of RF energy is located outside the chamber. A path is formed for the RF energy through the wall of the chamber in order to energize the antenna, such that RF energy is directed through the tire tread to heat the gum layer to an extent sufficient to vulcanize the tire tread to the tire carcass.
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Kittle John E.
Long Mile Rubber Company
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