Fluid sprinkling – spraying – and diffusing – With cutoff or flow varying means operated by means... – With overriding second control means
Patent
1992-02-26
1993-05-04
Huson, Gregory L.
Fluid sprinkling, spraying, and diffusing
With cutoff or flow varying means operated by means...
With overriding second control means
239 70, 137 783, A01G 2516
Patent
active
052073807
ABSTRACT:
A system is disclosed comprised of several inputs in the soil that send a current into the soil and measure the resulting resistance in the soil. The soil resistance varies inversely with the level of moisture in the soil. Two voltage comparators are used to determine whether the soil has reached a pre-determined level of saturation or dryness. If the pre-determined level of dryness is exceeded, then a signal is sent through a switch and a latch, and activates the sprinkler solenoids. Once the pre-determined level of saturation is reached, a saturated signal is sent through the switch and latch in order to de-energize the solenoids. The system includes an over-watering prevention feature wherein a clock circuit is used so as to pulse the sprinklers in order to allow the water to permeate the soil between the sprinkler pulses.
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Huson Gregory L.
Merritt Karen B.
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