| 摘要 |
<p>The invention relates to hydraulic circuit units. A hydraulic circuit unit comprises parallel top and bottom faces and a side face for receiving a valve assembly. At least four passageways extend between the top and bottom faces and are perpendicular to them. The ends of the passageways open through the faces and the passageways are arranged with one at the centre of a circle and the others regularly spaced around the circumference of the circle so that the unit may be rotated about the centre of the circle to align the passageways with those of an adjacent similar unit in a plurality of positions. Connections extend between at least two of the passageways and a valve assembly positioned on the side face. The hydraulic circuit units are used in the construction of modular hydraulic circuits.</p> |
