| 摘要 |
<p>A liquid apparatus including a housing 2 with a liquid conduit 3 through it, and at least one moveable element 4 slideably coupled to the housing 2 with at least one coupling 5. The coupling 5 includes at least one pair of mutually magnetic interactive portions, with one portion 6 forming at least part of the moveable element 4, and the other portion 7 forming part of a buoyancy float 8 in the liquid conduit 3, where the slideable movement of the moveable element 4 produces a corresponding movement of the coupling portion 7 within the housing 2.</p> |
