| 摘要 |
A door system (20) having a door (21) movable between a closed position and an open position, a plurality of panels (40 - 43; 140 - 143; 240 - 243), a face r (45; 145; 245) generally defining the configuration of the panels, hinges (5 0; 150; 250) joining adjacent of the panels for articulation in moving between the closed position and the open position, a reinforcing member (65; 165; 26 5) associated with the facer extending substantially the longitudinal length of at least one of the panels, a roller assembly (80; 180; 280) mounted on the reinforcing member, and a track system (31, 32; 131, 132; 231, 232) operatively interrelated with the roller assembly, whereby forces imparted t o the facer are transferred to the track system through the reinforcing member and the roller assembly.
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