Resilient tires and wheels – Tires – resilient – Pneumatic tire or inner tube
Patent
1989-05-01
1992-05-26
Aftergut, Jeff H.
Resilient tires and wheels
Tires, resilient
Pneumatic tire or inner tube
152516, 152520, 156119, 156123, B60C 1701, B29D 3000
Patent
active
051158523
ABSTRACT:
A mold member for use in manufacturing a closed-torus tire comprises an annular inflatable resilient member having a substantially cylindrical inner wall and a corrugated outer wall opposed thereto. At the beginning of a tire manufacturing process, the mold member is expanded from its corrugated shape into a perfect toroid. A layer of rubber is first wrapped around the toroid and then a filament or cord is wound about the rubber. Upon the completion of the winding operation, additional rubber material is molded in a toroidal shape about the filament or cord so that the cord is fully embedded in rubber. Simultaneously with the molding operation, the additional rubber material is cast to a central wheel member. After vulcanization, the mold member is deflated from the expanded toroidal shape to the original corrugated form and the mold member is retained in the tire as a run-flat component, the corrugations forming a bumpy riding surface to inform a driver that a flat has occurred.
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Aftergut Jeff H.
Coleman Henry D.
Sudol R. Neil
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