Patent ID: 6145812
Filing Date: 2000-11-14
Classification: B66F,F16C

Abstract:
A jack, comprising a support; first and second gearwheels rotatably supported by the support and having mutually meshing teeth; a load carrier for supporting a load; and transferring means operationally connecting the second gearwheel with the load carrier for converting a rotational movement of the second gearwheel into a linear displacement of the load carrier,wherein the support and the second gearwheel have annular guide surfaces for guiding together rolling bodies with the support, the second gearwheel, and the rolling bodies forming together a rolling bearing,wherein the annular guide surface and the teeth of the second gearwheel are formed by a portion of a one-piece sheet metal member, andwherein the annular guide surface and teeth-forming portion of one piece sheet metal is formed as at least one of a Z-shaped member and a S-shaped member having an outer section forming a flank of the annular guide surface.