Patent ID: 9534659
Date: 2017-01-03
CPC Classifications: B29K,B29L,F16G

Claim:
1. A V-ribbed belt, comprising: a plurality of ribs configured for engagement of a multi-grooved belt pulley at rib flanks on opposite sides of each rib, wherein each rib of the plurality of ribs has an upper rib segment formed from a non-conductive elastomer material and a lower rib segment formed from a conductive elastomer material, wherein a material boundary between the non-conductive elastomer and the conductive elastomer in each rib extends to the rib flanks, wherein the lower rib segments of the plurality of ribs have a height dimension measured from a bottom of a valley between each two adjacent ribs of the plurality of ribs to the material boundary between the lower rib segment and the upper rib segment at the rib flanks of the two adjacent ribs is at least 0.12mm, and wherein each rib has a tip and wherein a height ratio of the height dimension of the lower rib segments to a second height dimension measured from the valley between the two adjacent ribs to a plane connecting tips of the two adjacent ribs is at least 6% wherein elastomer material in the non-conductive elastomer material and the conductive elastomer material is the same, and filler in the non-conductive elastomer material and the conductive elastomer material is different, wherein the filler in the conductive elastomer material includes carbon black, and wherein the filler in the non-conductive elastomer material includes silica.