Support mechanism for bifold door

Abstract From the Canadian patent

An overhead door including an upper door panel which is hingedly mounted to a horizontal header of a doorway and to a lower door panel. The door is movable between a first closed positioned wherein the door panels are vertically aligned and cooperate to close the doorway and a second, open position wherein the door panels are in a folded, generally horizontal and parallel relation. Brace members are provided pivotally mounted to the upper door panel and adapted to engage the vertical door jambs when the door is in its second, open position to provide an angular support therebetween. The brace members are held by cables extending from the lower door panel allowing rollers located at the …