A pneumatic tire having a single carcass layer reinforced with a metal cord, a high ending layer, a turn up part and a fixed bead structure

摘要

The present invention relates to a single carcass layer reinforced with parallel metal coils of at least one filament having a tensile strength of at least (-2000 x D + 4400 MPa) x 95%, where D is the filament diameter in millimeter units To the pneumatic tire. The turnup portion of the single carcass layer 12 in the bead portion of the pneumatic tire is located between the bead core 11 and the toe guard 18 and the radially outer edge of each turn-Is in contact with the main portion of the carcass layer and extends radially outwardly from the bead core as measured along the main portion of the tire carcass layer to an end point of 0.5 inches (12.7 mm) to 4.0 inches (101.6 mm). The tow safety device 18, which is associated with each bead core 11, has first and second ends, each end located immediately adjacent to the carcass layer. The first end 18a of the tow safety device is located at a position approximately 0.4 to 3.5 inches (10 mm to 89 mm) radially outward from the bead core, as measured along a major portion of the carcass layer, And the second end 18b is located radially outward from the bead core as measured along the turn-up portion of the carcass layer from the substantially axially outermost point of the bead core 11 To a position of about 3.5 inches (89 mm). The first end 18a and the second end 18b of the tow stabilizer are shorter in distance from the bead core than the end point 12a of the turn-up portion of the carcass layer.