| 摘要 |
PCT No. PCT/EP92/02972 Sec. 371 Date Jan. 8, 1994 Sec. 102(e) Date Jan. 8, 1994 PCT Filed Dec. 21, 1992 PCT Pub. No. WO93/12943 PCT Pub. Date Jul. 8, 1993.The invention concerns the structures and production of tubeless tire beads the seal of which on the rim and the resistance to degradation of which are increased. The beads, at least the surfaces of which in contact with the rim are formed of protectors (7), are covered, in accordance with the invention, with an air impermeable rubber mix (8) at least in part over the portion of the protector in contact with the rim. Extension of the covering (8) over the surface of the protector which is in contact with the inflation air is desirable.
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