Automatic irrigation water conservation controller

Boots – shoes – and leggings

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Details

364420, 364141, 364153, 340602, 73 73, 1376242, 239 63, 239 71, G06F 1546, A01G 2516

Patent

active

049224336

ABSTRACT:
A water conservation system that connects between a standard irrigation system that is controlled by a clock, and the water control valves of that system in order to limit the flow of water during timed irrigation cycles. When the timed watering cycles are initiated by the standard irrigation system, the water conservation device senses the moisture in the soil and compares it with preset wet and dry moisture limits and scales back each of the watering cycles in proportion to the moisture content of the ground to thereby conserve irrigation water that is applied to a ground area. The device includes a moisture sensor, a central processing unit, and a solid state memory that is connected to the central processing unit and the moisture sensor. When the device of the invention is initialized, the solid state memory samples and records the wet and dry moisture readings of the ground zone and stores the resultant wet and dry readings in the memory so that each time the timed irrigation system cycles, the water conservation device senses the moisture compares it with the wet and dry readings and scales back the amount of water applied to the ground area.

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patent: 4176395 (1979-11-01), Evelyn-Veere et al.
patent: 4189776 (1979-02-01), Kendall
patent: 4423484 (1983-12-01), Hamilton
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patent: 4569020 (1986-02-01), Snoddy et al.
patent: 4626984 (1986-12-01), Unruh et al.
patent: 4646224 (1987-02-01), Ransburg et al.
patent: 4799142 (1989-01-01), Waltzer et al.

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