Patent ID: 8235852

Claim:
A power transmission belt comprising: a body with a length, an inside, an outside, and laterally oppositely facing side surfaces, the body comprising at least one embedded load carrying member, the at least one load carrying member extending lengthwise of the body, wherein the body comprises a rubber layer defining at least a part of at least one friction drive surface, wherein short reinforcing fibers are embedded in the rubber layer in an amount of 15-50 parts by weight of the short reinforcing fibers per 100 parts by weight of rubber in the rubber layer, wherein the short reinforcing fibers comprise polyimide short reinforcing fibers, wherein the polyamide short reinforcing fibers make up at least 50 weight percent of the short reinforcing fibers embedded in the rubber layer, wherein a plurality of the polyamide short reinforcing fibers project from the at least part of the at least one friction drive surface and have exposed ends that are flattened, wherein flat particles of inorganic powder with a specific surface area of 5,000-25,000 cm 2 /g are adhered to the at least part of the at least one friction drive surface at locations on the at least part of the at least one friction drive surface at which the short reinforcing fibers do not project.