| 摘要 |
<p>A support structure or landing heel, especially but not exclusively intended to provide a parking support for a trailer, includes a pivotally mounted strut and a tie member one end of which is pivotally mounted to the strut, the other end of which is movable between two positions and fixable in said positions, the first of said positions being such that the tie holds the strut in a lowered attitude, the second being such that the tie holds the strut in a raised attitude.</p> |
