| 摘要 |
<p>A jack (1), defining a portable accessory for replacing a motor vehicle wheel, is adapted to be placed on the ground and has a scissors-like pantograph (10) provided with a first and a second arm (11,12) hinged to each other; the first and second arms (11,12) have respective lower end portions (14,15), which can be moved close or away by actuating a screw/nut-screw device (39); the second arm (12) is shorter than said first arm (11) and is provided with an upper end portion (31) hinged to an intermediate portion of the first arm (11); the jack (1) further has a supporting member (27), which is supported only by an upper end (26) of the first arm (11) and can rotate about an axis (29).</p> |
