THE Saginaw design of hydraulic steering gear is described in this paper.
This gear employs a screw and nut, with a novel system of circulating balls between these two members. The motion of the nut is transmitted to the cross-shaft or pitman shaft by means of rack and sector teeth.
Advantages claimed for this design include simplicity and versatility. The loads of the centering springs and even the size and number of reaction plungers can be varied, making the steering “firm” or “soft,” as desired.