Patent ID: 8480109
Filing Date: 2013-07-09
Classification: B62M

Abstract:
1. A pulley and drive belt system comprising: a drive belt, the drive belt comprising a plurality of longitudinally spaced lugs each having an alignment groove dividing the lug into first and second lug segments, the alignment groove having an alignment groove depth; and at least one pulley configured to engage a surface of the drive belt, the at least one pulley comprising: a frame configured to rotate about a rotation axis, the frame having a circular outer rim with opposing sides; a plurality of circumferential teeth extending radially and axially of the rim, each tooth having a tooth width and each tooth being configured to be received between adjacent lugs of the drive belt; and an alignment member having an elongate endless form and extending between adjacent circumferential teeth tops, the alignment member being configured to be received in the alignment groove, and the alignment member extending no further radially from the rotation axis than the circumferential teeth, a debris ejecting opening disposed radially inward of the alignment member between the circumferential teeth, the circumferential teeth, the alignment member and the alignment groove being configured so that with the alignment member received in the alignment groove, the drive belt rides on the circumferential teeth.