Moisture monitoring system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 4, 2004
Grant Date -
Jan 16, 2003
app pub date -
Jul 16, 2001
filing date -
Nov 30, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A leakage response system for an appliance includes a leakage sensor which is operative to change an electrical parameter upon contact by a conductive liquid, a controller circuit electrically coupled with the strip for generating an activation signal in response to contact of the strip by a conductive liquid and a response device coupled with the controller circuit and activated by the signal. The sensor includes a mat which is constructed of top and bottom outer layers of electrically conductive fabric separated by a central nonconductive fabric layer; and a pair of fusing layers fusing the top and bottom layers to the central nonconductive layer. The sensor may also include a pair of conductive pins for installation into a surface for detecting moisture hidden within the surface. The response device may include an audible alarm and/or a valve for shutting off the water flow in the appliance water supply line. The response device may also include a radio link for activating a remote alarm and shut off valve. An alternate sensor mat includes a pair of apertured foil conductive layers separated by a nonconductive layer, and a pair of fusing layers fusing the foil conductive layers to top and bottom nonconductive absorbent layers.
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