Automatic watering device

Details Automatic watering device Automatic watering device

1975-08-25

1977-04-05

Cohan, Alan

Fluid handling

Ambient condition change responsive

Burner gas cutoff

13762412, 251 30, 239 63, 200 6104, A01G 2500

Patent

active

040156168

ABSTRACT:
This invention relates to a device for providing water to a lawn in accordance with the amount of moisture in the soil. As the soil dries, moisture sensitive switches react to the drying process until, at a preselected degree of dryness, the moisture sensitive switches close an electrical circuit to actuate a water pump and thereby provide water to the lawn.

REFERENCES:
patent: 2688056 (1954-08-01), Kettering
patent: 2796291 (1957-06-01), Mueller
patent: 3039698 (1962-06-01), Richards
patent: 3253615 (1966-05-01), Armstrong
patent: 3439895 (1969-04-01), Marandi

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