B - Operations – Transporting – 60 – C
Patent
B - Operations, Transporting
60
C
B60C 1/00 (2006.01) B60C 11/00 (2006.01)
Patent
CA 2059763
The present invention provides a radial tire with a tread rubber having the following relation between a viscoelasticity (tan .delta.) peak temperature (Tg) and .alpha. value; -50 < Tg < -20 ~~~~~(1) 10.7 .alpha. - 58 < Tg < 22.9 .alpha. - 48 ~(2) wherein Tg is obtained from a viscoelasticity (tan .delta.) temperature distribution curve that is determined using a viscoelastic spectrometer at a frequency of 10 Hz, an initial strain of 10%, an amplitude of ~ 0.250 and a temperature elevating rate of 2°C/min, and a is obtained from an equation represented by Engine output × 10~~~ (3) Body weight + 60 wherein the Engine output is a net value in ps units and the body weight is the weight of an empty car in Kg.
Saito Yuichi
Watanuma Susumu
Kirby Eades Gale Baker
Sumitomo Rubber Industries Ltd.
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