Pneumatic tire having a run-flat insert structure

Details Pneumatic tire having a run-flat insert structure Pneumatic tire having a run-flat insert structure

B - Operations, Transporting

60

C

152/76.13

B60C 17/04 (2006.01) B60C 5/20 (2006.01) B60C 15/032 (2006.01) B60C 17/01 (2006.01)

Patent

CA 1086617

PNEUMATIC TIRE HAVING A RUN-FLAT INSERT STRUCTURE Abstract of the Disclosure A run-flat insert structure for a pneumatic tire is disclosed in which the insert structure comprises a homogeneous elastomeric material and is fully enclosed and pneumatically inflated. The insert structure is mounted within the cavity formed by the pneumatic tire and the wheel rim upon which the tire is mounted. The insert structure is shaped and spaced from the interior walls of the tire such that contact between the insert structure and the interior tire walls is minimized during rated load carrying and inflation conditions of the tire. The volume of the insert structure is less than 50% of the volume of the cavity formed by the tire and the wheel rim to thereby assist in avoiding undesirable contact between the insert structure and the tire. During the deflated condition of the tire, the insert structure supports the tire and its load at a deflection that prevents excessively rapid deterioration of the tire while running in the de- nated, run-flat condition.

295313

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