| 摘要 |
<p>Pneumatic valve structures employing digital valves. One of the problems solved through the invention is the provision of a multiple valve which is simple and relatively easy to program. The simplified structure includes a plurality of digital valves (20) arranged about an axis (18). The valves are actuated by displacement of pawls (102) urged in opposite directions by springs (54). The pawls are driven toward each other in the axial direction to actuate by one pawl a single selected valve in one direction while the opposing pawl, which is angularly displaced, performs an idle stroke.</p> |
