| 摘要 |
1,172,804. Pneumatic tyres. GENERAL TIRE & RUBBER CO. 8 March, 1968 [14 March, 1967], No. 11507/68. Heading B7C. A pneumatic tyre is provided with a tread 6 comprising tread bands 8, 9 of unequal width separated from each other by a circumferential groove 10, the radius of transverse curvature 15 of tread band 9 being greater than the radius of transverse curvature 16 of tread band 8 and shoulder 14 adjacent band 8 having a greater diameter than shoulder 13 adjacent band 9. The tyre, which may be of radial or cross ply construction, may be provided with zig-zag grooves 17 in each of the tread bands. |
