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This invention describes a sensing device useful as a wet condition indicator, and is composed of a sensing element that produces electric energy when it becomes wet, and an informing means such as an integrated circuit/piezoelectric buzzer (speaker), light source or electrochromic device. The sensi

This invention describes a sensing device useful as a wet condition indicator, and is composed of a sensing element that produces electric energy when it becomes wet, and an informing means such as an integrated circuit/piezoelectric buzzer (speaker), light source or electrochromic device. The sensing element incorporates small amounts of non-toxic, non-allergenic substances and operates as a battery when wet. That battery produces enough electric energy to power the informing device without need of any other circuitry or batteries. This has the advantage of lower cost so that it can be used for a wet condition indicator in disposable diapers. One sensing element is incorporated in each diaper, and can be discarded with it, while the informing element is reused.

대표청구항

[ We claim:] [1.] A moisture detector for garments comprising:

[ We claim:] [1.] A moisture detector for garments comprising: