Patent ID: 9139045
Filing Date: 2015-09-22
Classification: B60C

Abstract:
1. A non-pneumatic tire comprising: opposing, annular side portions; a first radial region comprising side cavities on said opposing annular side portions that are circumferentially staggered with respect to laterally opposing side cavities, wherein said cavities extend substantially across a radial length of the first radial region; and a second radial region comprising laterally extending tread grooves that are circumferentially offset relative to the cavities, wherein the first radial region is formed of a first polyurethane material having a Shore A hardness of 70A to 95A, and the second radial region is formed of a second polyurethane material having a Shore A/D hardness of 85A to 60D that is at least 2A greater than the first radial region, and wherein said side cavities are exclusively confined to said first radial region and define bar-shaped, radially aligned ribs therebetween, and said tread grooves are exclusively confined to said second radial region, and wherein a length/width ratio of the ribs is at least 2.5, and a side area of the bar-shaped ribs on each side portion is at least 50% of a combined side area of the ribs and cavities.