Pneumatic tire with cord layer extending close to tire outer surface
AssigneeThe Yokohama Rubber Co., Ltd.
InventorsJun Matsuda, Yoshiaki Hashimura
Life of this patent
Estimating the term…
Abstract
A pneumatic tire includes: an air permeation preventive layer disposed in the inner surface of the tire; a belt layer buried in a tread part; and a cord layer formed by arranging a plurality of cords. The cord layer is disposed between the air permeation preventive layer and the belt layer, and extends to a bead part side further from a tire maximum width position. At least a part of the cord layer is located close to the outer surface of the tire, at a position closer to the bead part side than the tire maximum width position, so that the distance between the cords and the outer surface of the tire is not more than 2 mm.
Claims6
A pneumatic tire comprising:
- an air permeation preventive layer disposed in the inner surface of the tire;
- a belt layer buried in a tread part;
- a single carcass layer defining two end portions laid between a pair of bead parts, wherein each of the end portions of the single carcass layer are folded around a bead core of one of the bead parts from an inner side of the tire to an outer side of the tire;
- and
- a cord layer formed by arranging a plurality of cords, the cord layer being disposed between the air permeation preventive layer and the belt layer along the single carcass layer, and extending radially inwardly to a respective bead part side further from a tire maximum width position to a termination point outward of the radial height of either of the bead cores without including any portion that extends radially inwardly to reach an area radially aligned with a bead core of the respective bead part side,
- wherein a part of the cord layer is located close to the outer surface of the tire, at a position closer to the respective bead part side than the tire maximum width position, so that the distance between the cords and the outer surface of the tire is not more than 2 mm,
- wherein radially inward of the tire maximum width position a portion of the cord layer is in contact with the respective folded end portion of the single carcass layer,
- wherein the single carcass layer is in contact with both the air permeation preventive layer and the cord layer, and
- wherein radially inward of the tire maximum width position the portion of the cord layer in contact with the respective folded end portion of the single carcass layer is extended radially inwardly by a respective portion of the cord layer which simultaneously extends closer to the outer surface of the tire and farther from the carcass layer and the respective portion of the cord layer which simultaneously extends closer to the outer surface of the tire and farther from the carcass layer is extended radially inwardly by the respective part of the cord layer located close to the outer surface of the tire.
Dependencies are inferred from the claim text.