Grooved drum for tire building machine

Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Tire body building type

Patent

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Details

156417, 156123, 152502, 152503, B29D 3024

Patent

active

051164493

ABSTRACT:
An apparatus for building a tire having an inner liner to which a sealant strip is to be laminated, comprises a rotary drum having a surface in which a trough or "groove" is provided. The depth of the groove corresponds approximately to the thickness of a layer of an elastomeric sealant which is to be placed in the groove. If the walls of the groove are contoured so as to confine the sealant layer in a specified manner while accommodating the thermo-viscous properties of the laminate, the completed first stage carcass may be removed without damaging the sealant layer which is adhered to the inner liner. The rotary drum is provided with fingers movable to a position to support the tire bead by means of an annular piston and cylinder surrounding the shaft of the drum and connected to the fingers by bell cranks which are pivotally mounted in the drum and operatively interconnected with means to move the fingers radially between an inactive position and a bead engaging position in response to appropriate axial movement of the drum mechanism.

REFERENCES:
patent: 3489634 (1970-01-01), Pizzo et al.
patent: 3813271 (1974-05-01), Riggs
patent: 4072550 (1978-02-01), Stalter, Jr.
patent: 4263083 (1981-04-01), Schleiger

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