Filter accessory for use in swimming pool water flow system
US6962655B1 · kind B1 · utility
13Cited by
12References
4Claims
0Family size
Inventors
Key dates
| Filing date | Jun 4, 2004 |
| Grant date | Nov 8, 2005 |
| Priority date | — |
| Expiry date | Jun 4, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D29/23
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A basket that is used in a pool cleaning system includes a flap that is biased closed and is opened against the bias by water flowing into the basket. When a pump drawing water out of a pool moves water through the basket, debris in the water is trapped in the basket. However, when the pump is shut off, any back flow of water associated with the pump shut off will not cause debris to move out of the basket because the flap will be shut by the bias and the backward movement of water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.