| 摘要 |
A track system (110) for a door (120) having a plurality of panels including a top panel (121) and a hinge connected adjacent panel (122), having an inner side for attaching mounting hardware and being movable between a closed vertical position proximate a door frame and an open horizontal position including, substantially vertical track (111) adapted to be displaced from the door frame (F) a distance sufficient for receiving a plurality of rollers (142, 152, 162, 165) attached to and spaced from the inner side of the door, transition track (112) commencing at the upper extremity of the vertical track and curving through an angle of substantially ninety degrees for receiving a top roller (132) positioned proximate the upper extremity of the top panel and spaced from the inner side thereof a distance greater than any of the plurality of spaced rollers, and horizontal track (114) extending from the transition track and having a curvilinear configuration for maintaining the top panel and the adjacent panel of the door pivoted about the hinge to remain downwardly concave during traverse of the rollers therein. |
