Foldable bicycle tire having flexible beads
AssigneeMitsubishi Belting Ltd.
InventorsShoji Inae, Harunori Okamoto
Life of this patent
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Abstract
An improved bicycle tire which can be folded for storage and transportation while maintaining the same running properties as a conventional tire. A plurality of bead cores made of a cord tensile member embedded in the bead section of the tire are provided by winding three to five turns of a cord tensile member having a low elongation ratio and high strength and which has been twisted one to two turns/10 cm in such a manner that the start and finish ends of the bead core overlap one another by 60 to 150 mm. The bead core preferably has a cut elongation of 5% or less and the strength of 300 kg/core.
Claims5
A tire comprising:
- a plurality of bead cores made of a cord tensile member embedded in bead sections of said tire, each of said bead cores being fabricated by winding three to five turns of a cord tensile member, having a low elongation ratio and high strength and which has been twisted 1 to 2 turns/10 cm, in such a manner that the start end and the finish end of said bead core are overlapped 60 to 150 mm, said bead core having a cut elongation of 5% or less and a strength of 300 kg/core.
Dependencies are inferred from the claim text.