| 摘要 |
<p>PURPOSE: To easily expand a tire installed on a rim with a packing ring arranged between beads by rotating a valve by introducing the valve furnished with a rod and an element for locking to an orifice and a mechanism for locking provided in the packing ring. CONSTITUTION: A packing ring furnished with a cylindrical orifice is arranged between inner walls of beads of a tire, an opening part 83 to pass a valve V is furnished and the tire installed on a rim J having a flat bottom surface 80 is inflated. The valve V has a diameterϕ1 between 1.2ϕand 2.0ϕand has a rectilinear rod 1 furnished with a male element 2 for locking devised to be related to a female mechanism 83 for locking outside of the valve V at a point of a distance equal to length of the orifice from its end part 11. The rod 1 extends on the other side of the element 2 for locking by an elbow type rod 3 which is thread-cut.</p> |
