| 摘要 |
<p>An endless power transmission belt construction (20), cord (27, 37) therefor and methods of making the same are provided, the cord having the yarns (33, 39) and the plies (32, 38) thereof respectively twisted on a 2 for 1 twister so as to cause the longitudinal axes of the fiber filaments (34, 40) to be disposed generally in the longitudinal direction of the cord (27, 37), with the denier of the fiber filaments (34, 40) of each yarn (33, 39) being approximately 1500. The twist multiplier of the three plies (32) is 3.7687 as the plies are twisted together at a rate of approximately 2.9 turns per linear inch of the cord (27), and the twist multiplier for the two yarns (33) is 3.6765 as the two yarns for each ply (32) are twisted together at a rate of approximately 4.9 turns per linear inch of that ply. The twist multiplier for five plies (38) is 3.6986 as the plies are twisted together at a rate of approximately 1.8 turns per linear inch of the cord (37), and the twist multiplier for three yarns (39) is 3.5838 as the three yarns for each ply (38) are twisted together at a rate of approximately 3.9 turns per linear inch of that ply. The fiber filaments (34, 40) comprise p-aramid that comprises co-poly (paraphenylene/3,4' oxydiphenylene terephthalamide). <IMAGE></p> |
