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US 2003/0116250 A1Published application
Pneumatic radial tire
OwnerNobuaki Minami, Tadao Matsumotoinventors
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Abstract
A bead portion of a tire has a short fiber reinforcing rubber layer extending along a side surface of a bead apex rubber from a bead core to a height position which is lower than an radially outer end of the bead apex rubber. The short fiber reinforcing rubber layer has short fibers compounded at an amount of 10 to 30 parts by weight with respect to 100 parts by weight of the rubber, and the short fibers are oriented in the tire circumferential direction.
Claims13
A pneumatic radial tire comprising:
- a carcass extending into a bead core of a bead portion from a tread portion via a side wall portion;
- and
- a bead apex rubber extending in a tapered manner from an outer surface of the bead core in a radial direction toward an outer side in a tire radial direction, wherein
- the bead portion has a short fiber reinforcing rubber layer extending along a side surface of the bead apex rubber and extending in a radial direction from the bead core to a height position which is inner side of an outer end in a radial direction of the bead apex rubber, and
- the short fiber reinforcing rubber layer is constituted by a short fiber compounded rubber in which short fibers are compounded at an amount of 10 to 30 parts by weight with respect to 100 parts by weight of the rubber, and the short fibers are oriented in the tire circumferential direction.
2 more elements
Dependencies are inferred from the claim text.