| 摘要 |
Apparatus for tensioning a safety belt, in which tension is applied to the belt through the action of a piston in a working cylinder, includes a mechanism for blocking the reverse action of the piston in the cylinder following the application of pressure. The reverse motion blocking mechanism includes at least one wedge, movable along a slide surface in response to the application of gas pressure, and toothings on the piston into which the wedge may be lodged to prevent reverse motion of the piston following the application of tension to the safety belt.
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