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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2018/097097
Kind Code:
The present invention relates to a pneumatic tire which comprises a partial tie rubber layer exclusively disposed at a portion between a carcass layer and an inner liner layer, and more specifically provides a pneumatic tire capable of achieving a further reduction in the weight of the tire while maintaining air impermeability and steering stability and achieving an excellent balance between these characteristics. A partial tie rubber layer 40 is disposed between a carcass layer 4 and an inner liner layer 9 and disposed over an area other than the leading end of a bead portion 3. The amount of protrusion L1 of the partial tie rubber layer 40 towards the bead portion 3 with respect to a perpendicular line P drawn from the outermost end of a belt layer 7 in the tire width direction to the inner liner layer 9 is set to 0.25 to 0.80 times the peripheral length L2 along the tire inner surface from the intersection A between the perpendicular line P and the tire inner surface to the leading end point B of a bead toe.

MIYOSHI Masaaki (Hiratsuka Factory, 2-1, Oiwake, Hiratsuka-sh, Kanagawa 01, 〒2548601, JP)
Application Number:
Publication Date:
May 31, 2018
Filing Date:
November 20, 2017
Export Citation:
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THE YOKOHAMA RUBBER CO., LTD. (36-11, Shimbashi 5-chome Minato-k, Tokyo 85, 〒1058685, JP)
International Classes:
B60C5/14; B60C13/00
Attorney, Agent or Firm:
SEIRYU PATENT PROFESSIONAL CORPORATION et al. (37 Kowa Building, 4-5 Tsukiji 1-chome, Chuo-k, Tokyo 45, 〒1040045, JP)
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