Abstract: The present invention is directed to an inclined helical spring having a plurality of coils along an inclined coil axis. Each coil constituting a part or the whole length of the helical compression spring is increased and decreased in diameter along the longitudinal axis of the spring, and forming the longitudinal axis of the spring in a free state thereof to be inclined substantially at a predetermined angle to an axis to be mounted with the spring. For example, one section of each coil having approximately a half of the circumference of each coil, which is divided by a plane including the coil axis, is increased in diameter, whereas the other one section of approximately a half of the circumference of each coil is decreased in diameter. The inclined helical spring may be mounted on a vehicle suspension.

Abstract: A two-line roll stand has a frame, an upper shaft on the frame, and two lower shafts on the frame spaced horizontally from each other below the upper shaft and forming with the upper shaft an isosceles triangle. Identical drive units each have a pair of rolls and gearing connected to the respective rolls. The lower shafts each carry three drive units and the upper shaft carries at least four of the drive units. The drive units of the lower shafts define a pair of roll lines spaced below and symmetrically flanking the upper shaft. The upper-shaft drive units are aligned on the lines with the rolls of the respective lower-shaft drive units. A single motor has an output directly connected to drive gears on the shafts for synchronously rotating all the shafts and thereby rotating all the rolls via the respective bevel gears and the respective drive units.