Vehicle tires including plies with high strength reinforcement
AssigneeThe Goodyear Tire & Rubber Company
InventorsEric C. Mizner, Paul W. Hobart, Italo M. Sinopoli
Life of this patent
Estimating the term…
Abstract
Tires of a large size for use off-the-road with super tensile reinforcement having values of at least 4655N (1046 lbs) break strength for bunched type cord.
Claims34
A pneumatic tire with a carcass having cords, two sidewalls spaced apart a distance, which in the axial direction determines the general width of the tire section, two beads each one of which around which are turned up the ends of the cords of the carcass, a tread disposed on the crown of the carcass, and a belt structure that is circumferentially interposed between the tread and the carcass, the belt structure having a width that is substantially equal to that of the tread and having at least four radially overlapped layers of elastomeric fabric reinforced with metallic cords, characterized by the metallic cords in three of the layers being 5+8+14.times..265ST+1 construction parallel to each other within each layer and inclined at an angle of between 21.degree. and 23.degree. with respect to the equatorial plane of the tire and at opposite inclinations to adjacent layers, the belt structure having a first layer radially inward most with the metallic cords spaced at 8EPI (3.14 ends/cm), a second layer on top of the first with the metallic cords spaced at 11EPI (4.34 ends/cm), a third layer on top of the second layer with the metallic cords spaced at 11 EPI (4.34 ends/cm) and a fourth layer of 3.times.7.times..22NT cord at 8EPI (3.14 ends/cm) on top of the third layer inclined at an angle between 21.degree. and 23.degree. with respect to the equatorial plane of the tire and opposite to the inclination of the third layer.
A pneumatic off-the-road tire of 25 inch and greater bead diameter with a carcass having cords, two sidewalls spaced apart a distance, which in the axial direction determines the general width of the tire section, two beads each one of which around which are turned up the ends of the cords of the carcass, a tread disposed on the crown of the carcass, and a belt structure that is circumferentially interposed between the tread and the carcass, the belt structure having a width that is substantially equal to that of the tread and having multiple radially overlapped layers of elastomeric fabric reinforced with cords, the cords in at least one layer being metalic and of 27.times. construction being parallel to each other within the layer, the cord strength being at least 1100 lbs (4893N).
Dependencies are inferred from the claim text.