Inner tube assembly for run-flat tires

Details Inner tube assembly for run-flat tires Inner tube assembly for run-flat tires

B - Operations, Transporting

60

C

152/76

B60C 5/24 (2006.01) B60C 5/20 (2006.01)

Patent

CA 1047380

ABSTRACT OF THE DISCLOSURE An inner tube assembly for a pneumatic tire is disclosed. The assembly includes a pair of inner tube systems, one of which surrounds the other and inter- communicates therewith via a valve unit that is adapted to allow a pneumatic fluid to flow unidirectionally from the inner one of such tube systems to the outer one of said tube systems and effect an equilibrium of pressure. The valve unit, however, is adapted to close when the outer one of such tube systems is punctured and undergoes a pres- sure drop relative to the inner one of such tube systems, thereby to pneumatically isolate the interiors of such tube systems from one another.

256669

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