| 摘要 |
<p>Mechanical positioning jack consisting of a threaded stem (1) of variable length comprising, at one of its ends, a flattened head, pierced by a linking member, which interacts with a nut (5) which is pierced diametrically by two channels, one tapped (4) and the other (6) smooth-walled but forming with the first channel (4) an angle generally close to 15 DEG , the nut (5) which can pivot in a housing (9) integral with an external part of the element to be manoeuvred comprising a spigot (7) integral with its outer wall, interacting with a spiral spring (12) locked between the spigot (7) and the casing (9). …<IMAGE>… </p> |
