Fluid handling – Ambient condition change responsive – For controlling soil irrigation
Patent
1989-05-22
1990-05-01
Chambers, A. Michael
Fluid handling
Ambient condition change responsive
For controlling soil irrigation
13762412, 239 70, 307112, 361178, F16K 1736
Patent
active
049210017
ABSTRACT:
There is provided a method and an apparatus for adapting a conventional freeze and rain sensors to be used with a water irrigation system in which a water valve is retracted by a latching solenoid.
REFERENCES:
patent: 3279379 (1966-10-01), Klyce
patent: 3777976 (1973-12-01), Milovancevic
patent: 3991939 (1976-11-01), Maclay
patent: 4246574 (1981-01-01), Sanner
patent: 4256133 (1981-03-01), Coward et al.
Carr Gregory W.
Chambers A. Michael
Tri-Phase, Inc.
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