| 摘要 |
<p>Apparatus and methods for controlling the driven axial movement of a ram which is forwardly driven from a variable position for discharge of processed fluent material through a barrel discharge opening, wherein a signal is provided to indicate the actual location of the ram when the ram is in said variable position, and forward displacement of the ram from said variable position is controlled dependent upon such indicated actual ram location to maintain predetermined ram forward displacement from said position.</p> |
