Filter element for pool-cleaning device
US6409916B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2000 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Aug 3, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04H4/1654
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention provides, in combination with a swimming pool cleaning device comprising an outer shell with a detachable lid, the outer shell being open at its lower end, and an inner shell spaced apart therefrom, open at its upper end and accommodating an impeller and a clean-water exit tube, the improvement comprising a filter element having a basket-like shape including a tubular central stem configured to be seated on the exit tube, the central stem being surrounded by an annular trough constituting the active filtering portion of the element, with the outer rim of the trough being detachably affixed to the inner shell, wherein, during operation of the device, solids-entraining water drawn by the impeller enters the annular trough from above and, passing the active filtering portion, emerges therefrom as clean water to be expelled through the exit tube and returned to the pool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.