| 摘要 |
<p>A jack, either the scissor type or the Y type, with a combined nut based on two units, metallic (11) and synthetic (12), as well as a holder plate support arm with special characteristics. The metallic part of the nut is U-shaped and has two necks (13) that fit into the holes in the arm (25) and the synthetic part is longitudinal, has the screw spindle passing through it and is controlled in its movements in the interior of the metallic part. The holder plate support arm (25) is manufactured starting from a sheet or strip of a smaller size, thus achieving a considerable asving in material while making the jack sturdier. <IMAGE></p> |
