| 摘要 |
<p>Improved clearing device for drains, applicable to sinks and the like, comprising a hollow cylindrical part (1) open at its lower end (2) and to which is externally coupled and pressure fitted a resilient bushing (3) made of rubber or the like which presents at its external and lower portion a stepping (4) with various diameters so that it can be properly adapted to different diameters of drains, the hollow cylindrical part comprising, at its higher closed plane (5) a central hollow neck (6) protruding upwards and wherein is housed the pumping plunger (7) to produce the clearing of the drain; the upper plane of the cylindrical part has a plurality of through holes (12) arranged at equidistant and peripheral positions for the inlet and outlet of water through its upper side. <IMAGE></p> |
