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Class Information
Number: 137/78.2
Name: Fluid handling > Ambient condition change responsive > For controlling soil irrigation
Description: Apparatus in which flow of water to the ground is controlled by means responsive to an environmental condition.

Sub-classes under this class:

Class Number Class Name Patents
137/78.3 Soil moisture sensing 165

Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8649910 Automatically adjusting irrigation controller Feb. 11, 2014
8504210 Wireless extension to an irrigation control system and related methods Aug. 6, 2013
8443849 Apparatus and method for draining irrigation systems May. 21, 2013
8433448 Same code base in irrigation control devices and related methods Apr. 30, 2013
8369996 Method, apparatus, and computer program for irrigating a field space with a center pivot irrigation machine Feb. 5, 2013
8260466 Modulated watering device based on watering index percentage Sep. 4, 2012
8200368 Automatically adjusting irrigation controller with temperature and rainfall sensor Jun. 12, 2012
8170721 Automatically adjusting irrigation controller May. 1, 2012
8145359 Systems and methods of reducing peak water usage Mar. 27, 2012
8024074 System and method of managing substances in a plant root zone Sep. 20, 2011
7957843 System and method for irrigation controller Jun. 7, 2011
7931045 Water sensor apparatus Apr. 26, 2011
7711454 Water savings system May. 4, 2010
7619322 Two-wire power and communications for irrigation systems Nov. 17, 2009
7574284 Method and apparatus for optimizing soil moisture Aug. 11, 2009
7506658 Liquid flow control devices Mar. 24, 2009
7502665 Networked diagnostic and control system for dispensing apparatus Mar. 10, 2009
7421317 Two-wire controlling and monitoring system for the irrigation of localized areas of soil Sep. 2, 2008
7358626 Two-wire power and communications for irrigation systems Apr. 15, 2008
7349764 Watering warning device Mar. 25, 2008
7328089 Satellite irrigation controller Feb. 5, 2008
7317972 Management of peak water use Jan. 8, 2008
7306167 Light-activated mist sprayer system Dec. 11, 2007
7305280 Method and system for providing offset to computed evapotranspiration values Dec. 4, 2007
7216020 Method and system for controlling an irrigation scheduling engine using computed evapotranspiration values May. 8, 2007
7206669 Two-wire controlling and monitoring system for the irrigation of localized areas of soil Apr. 17, 2007
7146255 Two-wire controlling and monitoring system for irrigation of localized areas of soil Dec. 5, 2006
7133749 Method and apparatus for optimizing soil moisture Nov. 7, 2006
7096094 Automatic irrigation frequency adjustment for deep watering Aug. 22, 2006
7048204 Irrigation controller using estimated solar radiation May. 23, 2006
7033108 Turf playing surface aeration and drainage system Apr. 25, 2006
6993416 Two-wire controlling and monitoring system for irrigation of localized areas of soil Jan. 31, 2006
6976386 Tensiometer methods Dec. 20, 2005
6959882 Watering and aerating soil with a drip line Nov. 1, 2005
6950728 Interactive irrigation system Sep. 27, 2005
6944523 Recording and processing utility commodity usage Sep. 13, 2005
6892114 Modifying irrigation schedules of existing irrigation controllers May. 10, 2005
6850819 Irrigation control system Feb. 1, 2005
6772621 Tensiometer methods and apparatus Aug. 10, 2004
6766221 Two-wire controlling and monitoring system for irrigation of localized areas of soil Jul. 20, 2004
6585168 Differential relative humidity and temperature sensitive irrigation control Jul. 1, 2003
6452499 Wireless environmental sensor system Sep. 17, 2002
6453216 Method of controlling an irrigation system Sep. 17, 2002
6453215 Irrigation controller Sep. 17, 2002
5944444 Control system for draining, irrigating and heating an athletic field Aug. 31, 1999
5860247 Gas driven hydroponic system with a liquid pump outlet pipe connected to a variable buoyant float Jan. 19, 1999
5836339 Raindrop counter and control system for irrigation systems Nov. 17, 1998
5826792 Automatic control incorporated within lawn watering systems Oct. 27, 1998
5823433 Wind governed sprinkler control system Oct. 20, 1998
5694963 Method and apparatus for freeze prevention of irrigation systems Dec. 9, 1997

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