| 摘要 |
<p>An extensible protection system, comprises a frame that can be deployed around a central tube of longitudinal axis, comprising two ends, a frame covering fabric, the frame having at least two pairs of rigid tubes, two rigid tubes of one pair, in a respective axial plane passing through the longitudinal axis, being articulated by one of their ends to a respective yoke, of which yokes one is secured to one of the ends of the central tube, and the other is secured to the other end of said central tube, the other free ends of the rigid tubes being able to move in the axial plane of the pair, one semirigid tube per pair of rigid tubes, in said axial plane of the pair, comprising at each of its ends a piston, each piston of a semirigid tube being able to slide fluidtightly in each one of the rigid tubes of the pair in order to form a pressurizing chamber in each of the rigid tubes, the protection system further comprising a device for pressurizing the chambers of the rigid tubes in order to cause the pistons to move in the rigid tubes and cause the system to change from a folded position to a deployed position.</p> |
