Special application > Liquid or moisture responsive > Humidity responsive > Weight of absorbed water > Patents

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Class Information
Number: 200/61.07
Name: Electricity: circuit makers and breakers > Special application > Liquid or moisture responsive > Humidity responsive > Weight of absorbed water
Description: Devices in which a certain quantity of water taken up by the hygroscopic means causes operation of the circuit controller.

Patents under this class:

Patent Number	Title Of Patent	Date Issued
6977351	Moisture absorptive rain sensor with sealed position sensing element for irrigation watering program interrupt	Dec. 20, 2005
6570109	Quick shut-off extended range hygroscopic rain sensor for irrigation systems	May. 27, 2003
5884495	Dehumidifier with an adjustable float for setting the moisture level shut off	Mar. 23, 1999
4554794	Condensate receptacle support for dehumidifier	Nov. 26, 1985
4254311	Liquid level control	Mar. 3, 1981
4133016	Apparatus driven by an electric motor and incorporating a safety device	Jan. 2, 1979
4064648	Weather responsive insulation system for greenhouses and the like	Dec. 27, 1977