Electrical transmission or interconnection systems – Switching systems – Condition responsive
Patent
1984-09-19
1986-09-23
Shoop, Jr., William M.
Electrical transmission or interconnection systems
Switching systems
Condition responsive
307 38, 307118, 324 61R, 137 782, 137 783, 239 63, H01H 3518, F24F 1100
Patent
active
046137645
ABSTRACT:
A rain detector is provided for preventing operation of an irrigation system upon detection of an adjustably selected amount of rainfall. The rain detector is designed for use with an automatic irrigation control system of the type including a clock controller to electrically operate one or more normally closed valves for programmed supply of irrigation water to sprinklers individually or in selected groups. The rain detector comprises a switching circuit connected electrically in series with the sprinkler valves, with the switching circuit including spaced sensors extending for an adjustable depth into a collection tray exposed to rainfall. The switching circuit is normally closed in the absence of rainfall to permit normal programmed operation of the sprinkler valves. However, when rainfall within the collection tray reaches a level bridging the sensors, the switching circuit is triggered to form an effective open circuit condition between the clock controller and the sprinkler valves, thereby closing the sprinkler valves pending evaporation of the rainwater to a level below the sensors.
REFERENCES:
patent: 2611643 (1952-09-01), Higgins
patent: 3195816 (1965-07-01), Mercer
patent: 3224676 (1965-12-01), Rauchwerger
patent: 3438518 (1969-04-01), Aerts
patent: 3665209 (1972-05-01), Webb et al.
patent: 3721254 (1973-03-01), Rutten
patent: 3750950 (1973-08-01), Whitener
patent: 3787728 (1974-01-01), Bayer et al.
patent: 3894690 (1975-07-01), Hill
patent: 3916926 (1975-11-01), Smolin et al.
patent: 3944845 (1976-03-01), Luteran
patent: 4014359 (1977-03-01), Sanner
patent: 4130382 (1978-12-01), Bode
patent: 4488568 (1984-12-01), Hasenbeck
patent: 4502288 (1985-03-01), Lynch
Clemar Manufacturing Corp.
Ip Shik Luen Paul
Shoop Jr. William M.
LandOfFree
Rain detector for irrigation control system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rain detector for irrigation control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rain detector for irrigation control system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-767811