| 摘要 |
A power door operator (10,13) for mounting overhead of a door opening in a mass transit vehicle for moving a door panel (4,5) over and away from the door opening, including a base plate (18) incorporating a rotary helical drive (36) internal of a door hanger (21). The door panel (4,5) is locked in a closed position by primary and secondary means preventing drive rotation and panel movement. <IMAGE> |
