| 摘要 |
<p>The sheath (14) includes reinforcements (32, 34) extending axially (XX) over the entire length of the sheath, between the sides. Preferred features: Reinforcements are parallel, axial ridges spaced apart, projecting into the cavity and molded on the sheath. Ridges have a transverse U-section, defining grooves (34) on the drum side. Grooves extend axially between tire edges. Each groove is interrupted centrally by a bridge (36), forming part of a central belt. Reinforcing inserts are spaced in pairs at angular intervals of 10 degrees -180 degrees . A cylindrical reinforcing variant is described. Further reinforcing belts may be included. They are contained in a throat cross section at the tire edge. Tire edges are flat and butted together. A variant with soft annular lips at the edges is described.</p> |
