| 摘要 |
<p>The invention is especially suitable when front and rear wheels are hydraulically steered, each set by its own hydraulic cylinder, the two cylinders being connected in hydraulic tandem so that the same angularity of steering will the imparted to both sets of wheels. The self-synchronizing of the present invention overcomes a serious prior fault that occasionally a nonsynchronous relationship would develop. The prevent invention opens a synchronizing valve on the occasion of each extreme swing, of the wheels. A check valve then ensures a synchronized return swing.</p> |
