| 摘要 |
A lifting jack comprises a member for coupling to the vehicle to be lifted from a base on which the jack also rests; said coupling member is raised by rotating a threaded bar (1) which is rotated by a low voltage electric motor (10) operationally connected to the bar by way of a reduction unit constituted by two sets of gears in cascade fixed on to parallel shafts (13, 14), of which one is connected to the motor and the other to the bar. |
