Water filter containing faucet and display therefor
US5858215A · kind A · utility
70Cited by
25References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 1996 |
| Grant date | Jan 12, 1999 |
| Priority date | — |
| Expiry date | Dec 6, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/9464
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The combination of a water filter and a display for indication of the water filter condition includes an electrical circuit connected to the display and responsive to use of the water filter. The circuit includes a microcontroller, a timer connected to the microcontroller and providing timing signals thereto, and a switch connected to the microcontroller and responsive to the flow of water from the filter to cause the microcontroller to process the timing signals. The microcontroller is programmed to utilize the timing signals to provide an electrical signal to the display indicative of filter condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.