| 摘要 |
<p>No further information available at time of publication. USAB- US4434519 A The apparatus is for cleaning submerged surfaces, particularly swimming pool walls and floors. It has a cleaning head comprising a shaft (103) carrying a rotateable turbine in a housing (99). There is a roller (102) linked to the turbine by a cam to cause the apparatus to move over the surface in a step by step manner. - A brush fitted under the cowl (105) cleans the surface. The turbine causes a water flow under the cowl, through pipes (107) to a debris trap (106) and through pipes (108, 98) to an outlet. (10pp)</p> |
