Patent ID: 9108470
Filing Date: 2015-08-18
Classification: B60C

Abstract:
1. A run-flat device for use with a pneumatic tire comprising: an inner ring having an axis of rotation, the inner ring comprising at least two annular pieces; a first coupler for coupling together the at least two annular pieces of the inner ring; a deformable outer ring having an inner surface generally facing the inner ring and an outer surface generally facing away from the inner ring, the outer ring comprising at least two annular pieces; a second coupler for coupling together the at least two annular pieces of the outer ring; a support element comprised of a polymeric material, the support element being coupled to an outer surface of the inner ring and coupled to the inner surface of the outer ring; and a stop element positioned between the at least two annular pieces of at least the inner ring and spaced apart from the inner surface of the outer ring by a distance, the stop element being configured to limit radial deflection of the inner and outer surfaces of the outer ring towards the inner ring through the distance.