| 摘要 |
<p>The apron has driving units (10) provided at a level of lateral ends (7, 8) of orientable strips (2A) for controlling a deployment and folding of the apron. Transmission units (6) execute a stroke to control unlocking of strip blocking units (19) e.g. lock, blocking strips in closing position and opening controlling stroke to control an opening of the strips in cutout position. The transmission units execute the pushing stroke, for pushing the strips along a direction of a plane of the apron, and blocking units controlling stroke for controlling an opening of the strips.</p> |
