초록 ▼

A pair of spaced electrodes within an area subject to wetness couple non-conductively with a sensor protected from wetness, and an alarm sounds in response to moisture decreasing the resistance between the electrodes. For example the electrodes project into the absorbent material of a diaper and ext

A pair of spaced electrodes within an area subject to wetness couple non-conductively with a sensor protected from wetness, and an alarm sounds in response to moisture decreasing the resistance between the electrodes. For example the electrodes project into the absorbent material of a diaper and extend along the inside of the diaper sheath opposite a pouch on the outside of the sheath. The pouch contains a sensor capacitively coupled to the electrodes.

대표청구항 ▼

[ What is claimed is:] [1.] A wetness detector for a detecting electrolytic wetness in a first area, said first area being subject to wetness, comprising:a first electrode projecting into the first area;a second electrode spaced from the first electrode and projecting into the first area;a sensing d

[ What is claimed is:] [1.] A wetness detector for a detecting electrolytic wetness in a first area, said first area being subject to wetness, comprising:a first electrode projecting into the first area;a second electrode spaced from the first electrode and projecting into the first area;a sensing device in a second area protected from wetness in said first area and non-conductively coupled to each of said electrodes and responsive to the impedance between said electrodes in said first area so as to produce a signal when the first area becomes wet and electrolytic wetness couples the electrodes in the first area.