| 摘要 |
<p>The belt (1) has an inflatable enclosure (2) moving from a deflated position to an inflated position by an inflating unit. The inflating unit has a pressurized gas e.g. carbon dioxide, cartridge (4) triggered for inflating the belt. The triggering of the cartridge is controlled by a control unit formed of a manual pivoting handle. The enclosure is in the shape of a toric ring, whose transversal profile varies in dimension and in shape. A front part of the belt has a volume larger than a remaining part of the belt in an inflated position.</p> |
