Profiled bar, and vehicle spring produced therefrom
AssigneeHendrickson Commercial Vehicle Systems Europe GmbH
InventorsGerhard Kuhnelt, Jorg Zamberger
Life of this patent
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Abstract
A vehicle spring for a spring system, includes a spring body (20) and is produced, in particular rolled, from a profiled bar (1) made of a flat steel bar, in particular spring steel, in a hot deformation process. The profiled bar (1) or the spring body (20) has at least one material recess (6) which is provided over the length of the profiled bar or the spring body at least in some regions. The cross-sectional shape of the profiled bar (1) can be the same over the entire length of the profiled bar, whereas the cross-sectional shape in the spring body (20) can vary over the length of the spring body.
Claims31
1-26. (canceled)
A profiled bar that is made of flat-bar, spring steel for producing a hot-deformed, rolled, vehicle spring having an elongated spring body, the profiled bar having a longitudinal axis, a transverse axis (z) that runs crosswise to the longitudinal axis and that corresponds to the neutral fiber, and an axis (v) that runs at right angles to the transverse axis (z) from the bottom to the top of the profiled bar,
- the profiled bar also having a cross section perpendicular to the longitudinal axis thereof, the cross section defining a trapezoid at least in some places over the length of, the profiled bar.
A vehicle spring with an elongated spring body, which is produced in a rolled, hot-deformed manner from a profiled bar, the elongated spring body having a longitudinal axis, a transverse axis (z) that runs crosswise to the longitudinal axis and that corresponds to the neutral fiber, and an axis (v) that runs at right angles to the transverse axis (z) from the bottom to the top of the elongated spring body,
- the elongated spring body also having a cross section perpendicular to the longitudinal axis thereof, the cross section defining a trapezoid at least in some places over the length of the elongated spring body.
Dependencies are inferred from the claim text.