Patent ID: 8061398
Filing Date: 2011-11-22
Classification: B29D,B60C

Abstract:
1. A non-pneumatic tire comprising: radially aligned side cavities on a first sidewall that are staggered with respect to radially aligned and laterally opposing side cavities on a second sidewall; and tread grooves laterally extending from the first sidewall, wherein all tread grooves extending from said first sidewall are each in substantial radial alignment with the respective cavity and tread grooves laterally extending from the second sidewall, wherein all tread grooves extending from said second sidewall are each in substantial radial alignment with the respective cavity and each being substantially offset from the respective opposing tread groove, wherein each tread groove comprises a first wall having a first angle of 5° to 65° relative to the radial direction, wherein the tread grooves extend from the respective first sidewall or second sidewall, but not to the opposing sidewall; wherein the ratio of all side cavities on said first sidewall to all tread grooves extending from said first sidewall is 1:1; and wherein the ratio of all side cavities on said second sidewall to all tread grooves extending from said second sidewall is 1:1; and wherein the tire has a unitary polyurethane structure and wherein the tire has a diameter of 60 inches to 159 inches.