Radial ply pneumatic tire

Details Radial ply pneumatic tire Radial ply pneumatic tire

B - Operations, Transporting

60

C

B60C 17/00 (2006.01) B60C 13/00 (2006.01) B60C 15/04 (2006.01) B60C 15/06 (2006.01)

Patent

CA 2088382

A radial ply pneumatic tire 10 is described. The tire 10 has a carcass with a bead portion 22,22', a carcass reinforcing structure 30, and a bead filler 48. The carcass reinforcing structure 30 has two plies 38,40 with turnup ends 32,32',34,34' wrapped about each bead 26,26'. The turnup end 34,34' of the first ply 38 terminates in radial proximity of the maximum section width of the tire 10. In a preferred embodiment of the invention, the tire carcass includes elastomeric first and second fillers the first filler 42 being located between the first ply 38 and the innerliner 35 of the tire 10, and the second filler 46 being located between the first 38 and second ply 40. The fillers 42,46 stiffen the sidewalls 18 to permit the tire 10 to be driven while uninflated. The bead core 26,26' of the preferred embodiment has a flat base 27 and a first 23 and second surface 25 extending from the base 27 and inclined relative to the base 27 thereby forming acute included angles of .alpha. and .beta. whereby .alpha. is greater than or equal to .beta.. The tire 10 may further include an aramid overlay 59 radially outwardly of the reinforcing belt 36.

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