Moisture indicator for potted plant soil
OwnerThomas William David Ashcroftinventor
Life of this patent
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Abstract
The patent application is directed to a moisture indicator that reversibly changes between two different colors depending on whether the moisture indicator is in a wet state or in a dry state. The moisture indicator is used to provide visual information about dryness/wetness of a substrate such as plant soil. The moisture indicator comprises a porous body member having a moisture indicating color and a moisture indicating material over the moisture indicating color. Water passed through the porous material activates the moisture indicating material from a dry opaque state to a transparent clear state. In the transparent clear state, the moisture indicating material reveals the moisture indicating color.
Claims15
A moisture indicator for indicating the water content of a substrate, comprising:
- a) a body member which is:
- i) made of at least a porous material having reversible water absorption properties,
- ii) provided with a moisture indicating surface for positioning above the substrate, said moisture indicating surface displaying a moisture level color,
- iii) provided with a moisture indicating color,
- iv) provided with a water transfer surface for contact with the substrate and allowing reversible water migration by capillary action through said porous material between the substrate and said moisture indicating surface;
- b) a moisture indicating material that reversibly changes from opaque when dry to transparent when wet;
- and
- c) wherein said moisture indicating surface is at least partly provided with said moisture indicating material on said porous material, and wherein said moisture indicating color is at least partially provided directly beneath said moisture indicating material.
A moisture indicator for indicating the water content of a substrate, comprising:
- a) a body member which is:
- i) made of at least a porous material having reversible water absorption properties,
- ii) provided with a moisture indicating surface for positioning above the substrate, said moisture indicating surface displaying a moisture level color,
- iii) provided with a moisture indicating color,
- iv) provided with a water transfer surface for contact with the substrate and allowing reversible water migration by capillary action through said porous material between the substrate and said moisture indicating surface;
- b) a moisture indicating material that reversibly changes from opaque when dry to transparent when wet;
- and
- c) wherein said moisture indicating surface is at least partly provided with said moisture indicating material, wherein said moisture indicating color is at least partially provided directly beneath said moisture indicating material, wherein said moisture indicating material is provided at both said water transfer surface and said moisture indicating surface, wherein said moisture indicating color is provided between said porous material and said moisture indicating material at both said water transfer surface and said moisture indicating surface.
Dependencies are inferred from the claim text.