Soil moisture signaling device

Details Soil moisture signaling device Soil moisture signaling device

1978-01-16

1980-01-22

Swisher, S. Clement

Signals and indicators

Indicators

Chemically activated type

73 73, G01N 3106, G01N 3122

Patent

active

041844459

ABSTRACT:
This invention relates to a device that may be inserted into the soil of a potted plant for the purpose of determining the soil moisture content thereof. The device employs a moisture sensitive signalling element and a tube-shaped humidity chamber which provides means for establishing an equilibrium condition between the moisture content of the soil and the moisture content of the air surrounding the signalling element, thereby providing an accurate indicator of soil moisture content.

REFERENCES:
patent: 2627505 (1953-02-01), Goodwin
patent: 2929241 (1960-03-01), Gebhart
patent: 2951461 (1960-09-01), Lockwood
patent: 3019638 (1962-02-01), Klein
patent: 3144343 (1964-08-01), Fritsche
patent: 3824844 (1974-07-01), Strickland
patent: 3951098 (1976-04-01), Meyers

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