发明名称 Moisture sensitive self-watering planter
摘要 A moisture sensitive self-watering planter utilizes a control valve to effect watering of the soil in a liner of the planter upon automatic detection of a predetermined level of dryness of the soil. The planter uses a weight-based system of detecting the amount of moisture in the soil to control the automatic release of a predetermined amount of water into the soil for rehydration thereof. As the weight of the soil increases with the volume of water, the valve is automatically closed to terminate the irrigation process.
申请公布号 US5020261(A) 申请公布日期 1991.06.04
申请号 US19880284897 申请日期 1988.12.15
申请人 LISHMAN, FRED W. 发明人 LISHMAN, FRED W.
分类号 A01G27/00 主分类号 A01G27/00
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