| 摘要 |
<p>The pneumatic tire incorporates a reinforcement belt comprising two superposed unfolded median plies and two laterally disposed folded marginal plies. The folded plies each form two superposed flaps, with the corresponding flaps of each marginal ply being substantially aligned. In all embodiments of the invention at least one pair of corresponding opposite laterally disposed flaps align with one of the unfolded median plies, and the lateral areas of the other unfolded median ply are surrounded by the folded plies. In at least one embodiment of the invention the unfolded ply that aligns with one pair of oppositely disposed flaps is radially internal of the other unfolded ply. In another embodiment the aligned unfolded ply and flaps are radially external of the other unfolded ply. The superposed flaps of each folded ply differ in crosswise extent. In at least one embodiment of the invention the corresponding flaps of greater crosswise extent are radially external to those corresponding flaps of lesser crosswise extent. In another embodiment of the invention the corresponding flaps of greater crosswise extent are disposed radially internal to those corresponding flaps of lesser crosswise extent. In all embodiments of the invention there are at least two and at the most three layers of ply material at various points along the crosswise width of the reinforcement belt.</p> |
