| 摘要 |
<p>A filter unit is mountable between two clamping members (20,22) which are coupled by pivoting struts (30) at each side so that one member is longitudinally displaceable with release of the clamping. At intermediate regions the struts (30) carry guide rails (24) in which runners (28) are slidable. In the non-clamping state the runners (28) project forwardly. Lugs (36) of a filter unit can be engaged in them. The unit is pivoted to the horizontal and pushed rearwardly. The lugs slide rearwardly along the runners (28) until they reach stops. Then the runners retract into the rails (24). Finally the rails move rearwardly, causing the struts (30) to pivot so that clamping is effected. The process is reversible to remove a filter unit.</p> |
