| 摘要 |
The support ring (2) is open. Between the ends (25, 26) of the ring, in the side wall (3) of the groove (4) of the rim, there is provided the valve hole. In that hole (5) the valve (10) raises between the ends of the support ring, and thus, the valve which is provided between the bottom of the groove and the brake drum may be shorter. The dismounting of the tire is also facilitated. |
