System for maintaining pH and sanitizing agent levels of water in a water feature
US7393450B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Nov 24, 2004 |
| Grant date | Jul 1, 2008 |
| Priority date | — |
| Expiry date | Apr 14, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86196
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A system automatically maintains at least one of a pH level and a sanitizing agent level of water in a water feature. The system includes a sensor assembly responsive to at least one of a pH level of the water and a sanitizing agent level of the water. The system further includes a controller which generates control signals in response to signals from the sensor assembly. The system further includes at least one of a first source containing an sanitizing agent material and a second source containing a pH-modifying material. The system further includes a third source comprising a valve assembly and a third container containing a liquid calibrant material. The valve assembly is responsive to at least a portion of the control signals from the controller by selectively allowing the calibrant material to flow from the third container through the sensor assembly to the water feature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.