| 摘要 |
A flat roof truck is shown in which the side-wall of the truck is divided into at least two lengthwise elements that are hinged together. One of the elements also is hinged to the edge of a moveable roof element. Appropriate ropes and pulleys also are provided to draw the elements and the moveable roof element onto a flat, central and stationary element to enable the moveable elements to be folded onto each other above the plane of the flat roof. |
