| 摘要 |
This invention relates to an accessory method and apparatus for raising and sinking a suction hose, connected to a submerged swimming pool cleaner, by altering the buoyancy of the hose. Alterations of buoyancy of the hose are obtained by utilizing the flow of water or other liquid induced within the hose by the swimming pool filter pump, to alter the volume of air within a buoyancy chamber attached to the hose thereby inducing a negative buoyancy when the pump is switched off, and a positive buoyancy when the pump is in operation. The invention extends to a valve means which can be manipulated to induce buoyancy changes of the hose as required. |
