Patent ID: 7780560

Claim:
A belt having a compression section, a tension section, and a load carrying section, the load carrying section comprising longitudinal reinforcing cords of poly(p-phenylene-2,6-benzobisoxazole), the belt being characterized by: the reinforcing cords having a yarn twist greater than a cord twist, and the cord twist being in the range of one-forth to one-half of a ply twist of the reinforcing cords, wherein the twist multiplier of the yarn of the reinforcing cords is in the range of 1.0 to 1.5, wherein the twist multiplier of the ply of the reinforcing cords is in the range of 3.2 to 4.3, wherein the twist multiplier of the cord of reinforcing cords is in the range of 1.7 to 4.1, wherein the yarns and plies are twisted in the same direction with the cord being twisted in the opposite twist direction.