Car jack
AssigneeE.A. Storz GmbH & Co., KG
InventorsDieter Weisser, Franz Hafner
Life of this patent
Estimating the term…
Abstract
There is provided a car jack comprising a column attached at its bottom to a base, and a load-carrying arm pivoted to the column and movable by a screw spindle. The screw spindle is pivotably supported by a nut at the top of the column and by an abutment of the load-carrying arm. The arm and the column are formed from metal sections of U-shaped cross-section with the edges of the side limbs outwardly bent. Each of the outwardly bent parts is formed as a bead extending along the entire length of the side limb with its edge disposed in the plane of the internal flat side of the respective limb.
Claims10
A car jack comprising a column having a top end and a bottom end, a load-carrying arm, a cross-pivoting shaft, a screw spindle, a base, a crank handle, a screw spindle nut, and a screw spindle abutment, said column being formed of metal section of U-shaped cross-section, said metal section of said column having side walls with internal flat side portions and edge parts outwardly bent and shaped as beads with edges, wherein said bottom end of said column is attached to said base, said load-carrying arm is supported on said cross-pivoting shaft which is attached to said column and is pivotable by said screw spindle operable by said crank handle, said screw spindle is pivotably supported by said screw spindle nut and by said screw spindle abutment at said column and on said load-carrying arm, said beads extend at least over part of the length of said column side walls, and said bead edges are disposed substantially in the plane of said internal flat side portions of said respective side walls.
A car jack comprising a column having a top end and a bottom end, a base, a load carrying arm, a cross pivoting shaft, a screw handle, a hand crank, a screw spindle nut, and a screw spindle abutment, said column being formed of metal section of U-shaped cross-section, wherein said bottom end of said column is attached to said base, said load carrying arm is supported on said cross-pivoting shaft which is attached to said column and is pivotable by said screw spindle operable by said hand crank said screw spindle is pivotably supported by said screw spindle nut and by said screw spindle abutment at said column and on said load carrying arm, said column is extruded and has side walls with insides which are flat as far as edge portions thereof, and the cross-section of said edge portions of the walls is thickened.
Dependencies are inferred from the claim text.