| 摘要 |
<p>The invention concerns a buoyant plunger system, which comprises an open tube (3) rotating in bearings in a water tank (1), inside of which tube there is a unit consisting of two buoyant plungers (5) with weights (6) and rods (7) attached to them. An apparatus according to the invention can be used, for example, to raise water to a higher level.</p> |
