Circuit and apparatus for controlling a water softener
US4257887A · kind A · utility
21Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1979 |
| Grant date | Mar 24, 1981 |
| Priority date | — |
| Expiry date | Sep 26, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J49/85
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A novel electronic control circuit which includes a probe for detecting the conductivity in ion exchange material in a water softener and wherein the probe includes two pairs of spaced electrodes which are connected in a bridge circuit and connected so as to close an energizing circuit and latch it until it is time for regeneration and wherein the regeneration is controlled so that it will occur only at those times which are preset as, for example, during the night when the regeneration will not interfere with normal use of the water supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.