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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:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 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 |
| 6453216 |
Method of controlling an irrigation system |
Sep. 17, 2002 |
| 6452499 |
Wireless environmental sensor 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 |
| 5626162 |
Water control gauge |
May. 6, 1997 |
| 5400815 |
Timer activated irrigation system control |
Mar. 28, 1995 |
| 5375617 |
Override control system for an automatic sprinkler system |
Dec. 27, 1994 |
| 5355122 |
Rainfall detection and disable control system |
Oct. 11, 1994 |
| 5337777 |
Automatic sprinkler control override apparatus |
Aug. 16, 1994 |
| 5241978 |
Automatic sprinkler control override system |
Sep. 7, 1993 |
| 5193570 |
Electronic control unit for automatic sprinkling system |
Mar. 16, 1993 |
| 5139044 |
Fluid control system |
Aug. 18, 1992 |
| 5048755 |
Irrigation system |
Sep. 17, 1991 |
| 4921001 |
Apparatus and method for adapting sensors to an irrigation controller |
May. 1, 1990 |
| 4919165 |
Rainfall control for irrigation systems |
Apr. 24, 1990 |
| 4739789 |
Liquid flow control valve |
Apr. 26, 1988 |
| 4653529 |
Plant watering device |
Mar. 31, 1987 |
| 4613764 |
Rain detector for irrigation control system |
Sep. 23, 1986 |
| 4541446 |
In-ground control unit for watering systems |
Sep. 17, 1985 |
| 4488568 |
Rain detector for irrigation control |
Dec. 18, 1984 |
| 4393890 |
Method and device for automatic irrigation |
Jul. 19, 1983 |
| 4304528 |
Passive solar powered plant watering system |
Dec. 8, 1981 |
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