Automatic temperature and humidity regulation – Humidity control
Patent
1997-10-31
1998-12-29
Tapolcal, William E.
Automatic temperature and humidity regulation
Humidity control
239 63, G05D 2700
Patent
active
058531220
ABSTRACT:
An electrically operated valve controls the flow of irrigation water. A clock or computer controls the time of day and a programmed watering schedule. The clock signal is serially connected through differential relative humidity (RH) and temperature sensitive circuits. These circuits sense the difference between the surrounding RH and above ground temperature and set points derived from meterological "Normals, Means, and Extremes" weather data. When the difference between the set point readings and the surrounding RH or temperature becomes zero and beyond, solenoid activation is prevented during and sometimes before inappropriate weather and evapotranspiration conditions, such as rain, snow, or freeze.
REFERENCES:
patent: 4182357 (1980-01-01), Orastein
patent: 4246574 (1981-01-01), Sanner
patent: 4430828 (1984-02-01), Oglevee et al.
patent: 4502288 (1985-03-01), Lynch
patent: 4552303 (1985-11-01), Fisher et al.
patent: 4718446 (1988-01-01), Simpson
patent: 4852802 (1989-08-01), Iggulden et al.
patent: 4858377 (1989-08-01), Oglevee et al.
patent: 5097861 (1992-03-01), Hopkins et al.
patent: 5364024 (1994-11-01), Lin
patent: 5400608 (1995-03-01), Steed et al.
patent: 5450893 (1995-09-01), Balba et al.
patent: 5675979 (1997-10-01), Shah
LandOfFree
Relative humidity sensitive irrigation valve control does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Relative humidity sensitive irrigation valve control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Relative humidity sensitive irrigation valve control will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1417549