Vertically adjustable, pre-loadable torsion bar suspension

摘要

A torsion bar suspension system for a seat. Structure is provided for twisting the torsion bar to preload it. Structure is also provided for adjusting the height of the seat without changing the preload in the torsion bar, and this is accomplished by pivoting the preloading structure, with the torsion bar, about the axis of the torsion bar.