| 摘要 |
The jack unit comprises a jack body including two pairs of hinged arms associated by a screw with a nut screw operable by means of a handle associated with the body of the jack body for the extension and retraction of the arms in which, one of the arms, envisaged to abut on the ground, is hinged to a ground support plate element, and in which the operating handle means are rotatably associated with the jack body so as to be displaced from an inoperative retracted position in which the handle does not project substantially from the body of the jack to an operative position extended from the body of the jack itself when the jack is operated by the user. <IMAGE> |
