| 摘要 |
<p>The device has a reservoir tube (1) in which a lever tube (2) is introduced and is actuated through a valve (7) which permits the inlet of pressurized water that carry out the lifting of the tubes and a supporter arm (6). A valve (8) permits the evacuation of the water in the tube (1) in order to lower the tubes and the arm. A user is placed in the arm and the valves are actuated through a case (9).</p> |
