Abstract: A drive arrangement to open and close a door curtain of an overhead sectional door. The arrangement includes a door guide track for guiding movement of the door curtain between a closed, lowered position and an open, overhead position, and a drive mechanism for driving the door curtain between the closed and open positions. The drive mechanism comprises a drive belt located to a side of the door opening, guided to follow an inverted L-shaped locus by a drive belt guide track, a linkage between the drive belt and the door curtain, and a drive motor which drives the drive belt to open and close the door curtain as the drive belt follows the locus.

Abstract: A carriage assembly is disclosed for a garage door drive belt. The assembly includes first and second carriage elements each having inner and outer members adapted to retain an end of the drive belt therebetween. An articulated connection extends between the first and second carriage elements. Also disclosed is a support arrangement for a garage door drive unit, comprising a drive unit hanger for attachment to a garage door structure, the hanger further having a weight-supporting connection to the drive unit, wherein the drive unit position is adjustable while the weight of the drive unit is supported.

Abstract: A drive arrangement to open and close a door curtain of an overhead sectional door. The arrangement includes a door guide track for guiding movement of the door curtain between a closed, lowered position and an open, overhead position, and a drive mechanism for driving the door curtain between the closed and open positions. The drive mechanism comprises a drive belt located to a side of the door opening, guided to follow an inverted L-shaped locus by a drive belt guide track, a linkage between the drive belt and the door curtain, and a drive motor which drives the drive belt to open and close the door curtain as the drive belt follows the locus.