A BUOYANCY OPERATED AUTOMATIC SELF-WATERING PLANTER

摘要

A buoyancy operated automatic self-watering planter comprising an inner receptacle placed inside a larger receptacle 2 separated by a valve 3. The gap between the two receptacles forms a reservoir c into which fluid is introduced. If the weight of the inner receptacle 1 and contents is less than a certain value, the inner receptacle 1 will float, opening the valve 3 allowing fluid ingress from the reservoir c through an aperture a in the inner receptacle 1, aided by hydrostatic pressure. If the weight of the inner receptacle 1 and its contents is greater than a certain value the inner receptacle 1 will counteract the buoyancy effect enabled by the reservoir c gradually lowering the inner receptacle 1 back onto the valve 3 creating a seal, thus preventing fluid flow. A drain screw 4 is connected to the outer bowl to allow the inner bowl to freely drain in excessively wet conditions should the planter be used outdoors.