Automatic program ventilation control system
US5722887A · kind A · utility
47Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 17, 1995 |
| Grant date | Mar 3, 1998 |
| Priority date | — |
| Expiry date | Aug 17, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04G13/028
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An automatic programmed ventilation control system for operating a fan includes a fan drive circuit; a duty, cycle control circuit including means for selecting a duty cycle and means for setting the selected duty cycle; a timing circuit including means for selecting the time of day and means for setting the selected time of day; a fan speed control circuit including means for selecting a fan speed and means for setting the selected fan speed; and a manual override switch circuit for overriding the set duty cycle and fan speed for operating the fan at a predetermined speed for a preselected period of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.