Patent ID: 7070529

Claim:
A power transmission belt comprising: a load carrying band having a length; and a plurality of blocks attached to the load carrying band at preselected spaced intervals along the length of the load carrying band, wherein the plurality of blocks have a thickness (t) measured in a direction along the length of the load carrying band and a width (W) measured in a direction transversely to the length of the load carrying band, wherein each of the plurality of blocks comprises synthetic resin material and has no shape-determining insert therein, wherein the synthetic resin material comprises synthetic resin having a bending modulus of 15 to 20 GPa, wherein the ratio of t/W is from 0.11 to 0.20, wherein the synthetic resin material comprises polyamide resin, wherein reinforcing fibers are present in the polyamide resin in an amount of from 15 to 40 wt. %, wherein the polyamide resin comprises nylon 46.