Patent ID: 6070633
Filing Date: 2000-06-06
Classification: B60B,B60C,Y10T

Abstract:
A vulcanized low pressure ATV pneumatic tire having a pair of axially spaced beads, each of the beads having a bead core, the tire having a toroidal shape adapted to be mounted onto a design rim specified for the tire, the design rim being a 5.degree. drop center AT rim as specified in the Tire and Rim Association Yearbook, the design rim has a wheel flange and a bead hump, the bead hump has a diameter D.sub.h, between the axially inner surface of the wheel flange and the bead hump is a bead seat having a width W, the tire being characterized by each bead having a bead heel surface having a width of between 80% and 125% of W and each bead core having a first layer having a width of greater than 65% and less than 90% of W; wherein when the tire is mounted on the design rim the first layer is a base layer, the base layer having a diameter d, d being in the range of 0.020 of an inch greater than the bead hump diameter D.sub.h to 0.030 of an inch less than the bead hump diameter D.sub.h.