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| Number | Title | Issue Date |
| 7421317 | Two-wire controlling and monitoring system for the irrigation of localized areas of soil A controlling and monitoring system for irrigation of localized areas of soil includes a water pipeline, a plurality of controllable irrigation valves, a plurality of field sensors measuring specific irrigation parameters, and a plurality of localized irrigation con... | 09/02/2008 |
| 7358626 | Two-wire power and communications for irrigation systems A large number of irrigation system devices connected to a common two-wire cable can be powered and individually controlled from a central location by transmitting over the cable DC pulses of alternating polarity. Control information is conveyed by transmitting a co... | 04/15/2008 |
| 7349764 | Watering warning device A watering warning device (1) for determining watering intervals for at least one plant to be monitored, having at least one moisture content sensor (2), a timer (6) and an evaluation unit (3) is described. The evaluation unit (3) ... | 03/25/2008 |
| 7328089 | Satellite irrigation controller In one embodiment, the present invention provides a satellite irrigation controller that allows a user to insert a input/output card into any position in any sequence and be recognized as an input card or an output card. When the correct card type is determined, the... | 02/05/2008 |
| 7317972 | Management of peak water use The present invention provides systems and methods in which an irrigation management system reduces high peak water use values by utilizing a microprocessor (220) disposed in an irrigation controller (100) to receive peak water use information from a w... | 01/08/2008 |
| 7306167 | Light-activated mist sprayer system An automatic mist-sprayer system comprising a control unit having electronic circuitry adapted to activate the sprayer for a predetermined interval in response to a sensed ambient light condition of desired intensity and duration. The system desirably further includ... | 12/11/2007 |
| 7305280 | Method and system for providing offset to computed evapotranspiration values A system for providing irrigation control is provided. The system includes a processor configured to calculate an offset to an evapotranspiration (ET) value and an irrigation system configured to receive the offset from the processor and provide appropriate irrigati... | 12/04/2007 |
| 7266428 | Irrigation controller water management with temperature budgeting The present invention provides methods for water conservation with AC, DC, or ambient light powered irrigation controllers without the use of complex ET (evapotranspiration) data or ET related service fees. Programming may consist of the operator entering a prelimin... | 09/04/2007 |
| 7216020 | Method and system for controlling an irrigation scheduling engine using computed evapotranspiration values A system for providing irrigation control is provided. The system includes a number of non-local data sources for providing data, a processor and an irrigation system. The processor is configured to receive data from one or more of the non-local data sources and cal... | 05/08/2007 |
| 7204316 | Expandable well screen having temporary sealing substance An expandable well screen having a temporary sealing substance. In a described embodiment, a method of installing a well screen in a subterranean well includes the steps of: providing the screen including a temporary sealing substance preventing fluid flow through a... | 04/17/2007 |
| 7206669 | Two-wire controlling and monitoring system for the irrigation of localized areas of soil A two-wire controlling and monitoring system for irrigation of localized areas of soil includes a water pipeline, a plurality of controllable irrigation valves, a plurality of field sensors measuring specific irrigation parameters, and a plurality of localized irrig... | 04/17/2007 |
| 7182139 | System and method for controlling downhole tools A system and method is provided for integrated control of multiple well tools. Predetermined pressure levels are utilized in independently actuating specific well tools from a plurality of well tools. The number of well tools independently controlled may be greater ... | 02/27/2007 |
| 7159662 | System for controlling a hydraulic actuator, and methods of using same The present invention is directed to a system for controlling a hydraulic actuator, and various methods of using same. In one illustrative embodiment, the system comprises a first hydraulic cylinder, an isolated supply of fluid provided to the first hydraulic cylind... | 01/09/2007 |
| 7146255 | Two-wire controlling and monitoring system for irrigation of localized areas of soil A two-wire controlling and monitoring system for irrigation of localized areas of soil includes a water pipeline, a plurality of controllable irrigation valves, a plurality of field sensors measuring specific irrigation parameters, and a plurality of localized irrig... | 12/05/2006 |
| 7133749 | Method and apparatus for optimizing soil moisture A self-adjusting irrigation controller takes a pre-irrigation soil moisture reading prior to irrigation, chooses an amount of water to be dispensed corresponding to that reading from a table, and dispenses that amount of water. A predetermined length of time after t... | 11/07/2006 |
| 7096094 | Automatic irrigation frequency adjustment for deep watering The present invention provides systems and methods in which a microprocessor (220) is programmed to calculate an accumulated watering need for an irrigation zone of station (400)and control irrigation to the zone or station (400) using an automa... | 08/22/2006 |
| 7063271 | Moisture responsive sprinkler circuit A sprinkler circuit responds to the presence of water and limits watering accordingly. The sprinkler circuit comprises a control circuit and a moisture responsive circuit. The control circuit may be wired in series to a sprinkler cable at any point between a sprinkl... | 06/20/2006 |
| 7058478 | Irrigation controller water management with temperature budgeting The present invention provides methods for water conservation with irrigation controllers based upon the ambient temperature and extraterrestrial radiation of a particular geographical area. It receives a preliminary irrigation schedule from the operator and compute... | 06/06/2006 |
| 7048204 | Irrigation controller using estimated solar radiation An irrigation controller (200) receives temperature data, and at least partly derives an estimated solar radiation value from the temperature data. A regression model stored in a memory (220) of the irrigation controller (200) operates upon a da... | 05/23/2006 |
| 7033108 | Turf playing surface aeration and drainage system A perforated pipe network beneath a playing surface. A blower connected to the pipe network drawing an air flow through the pipe network to create a vacuum. A drain pipe connecting to the pipe network. An air/water separator connected upstream of the blower for sepa... | 04/25/2006 |
| 7009355 | Wiper control system for a vehicle and a method thereof A wiper control system is provided which comprises a rain droplet detector, a multiplexer, a count register, and a wiper control unit. The rain droplet detector has a plurality of switches that are configured to be electrically connected by rain droplets, and each s... | 03/07/2006 |
| 6993416 | Two-wire controlling and monitoring system for irrigation of localized areas of soil A controlling and monitoring system for irrigation of localized areas of soil includes a water pipeline, a plurality of controllable irrigation valves, a plurality of field sensors measuring specific irrigation parameters, and a plurality of localized irrigation con... | 01/31/2006 |
| 6977351 | Moisture absorptive rain sensor with sealed position sensing element for irrigation watering program interrupt A rain sensor for use with an irrigation control system includes a position sensing element. A moisture absorptive element is supported for receiving rainfall. An actuating element is mechanically connected to the moisture absorptive element for movement adjacent th... | 12/20/2005 |
| 6976386 | Tensiometer methods A method for collecting data regarding a matric potential of a media includes providing a tensiometer having a stainless steel tensiometer casing, the stainless steel tensiometer casing comprising a tip portion which includes a wetted porous stainless steel membrane... | 12/20/2005 |
| 6975236 | Wireless soil moisture meter network A wireless soil moisture meter network includes a central display unit and a plurality of remote sensor units. Each sensor unit uses a probe to measure moisture content in soil, and uses a wireless transmitter to transmit the measurement through a wireless channel t... | 12/13/2005 |
| 6959882 | Watering and aerating soil with a drip line When the dripline used for watering soil, low pressure air in the range 10–100 inch water column is flowed through a buried dripline, in alternation of with flow of water at 5 psig or more. The flow of air provides oxygen to the soil, and more widely and evenly di... | 11/01/2005 |
| 6950728 | Interactive irrigation system An interactive irrigation system exchanges information between an irrigation controller and a distal computer, between the irrigation controller and a user, between the user and the distal computer, and between the distal computer and a third party. The information ... | 09/27/2005 |
| 6944523 | Recording and processing utility commodity usage The present invention provides a recording node (100) at a consummer site that is used for the receiving, storing, determining and/or sending of utility commodity information. The recording node (100) is an integral part of networks (370) or can... | 09/13/2005 |
| 6892114 | Modifying irrigation schedules of existing irrigation controllers An irrigation scheduler modifies output of a preprogrammed irrigation schedule of an installed irrigation controller to at least partially improve irrigation of the corresponding landscape. Preferred embodiments accomplish this task using a microprocessor programmed... | 05/10/2005 |
| 6850819 | Irrigation control system An irrigation control system for land comprising: (a) at least one meter to measure one or more wheather conditions in a first area; (b) at least one monitor to (i) examine rainfall data derived from a radar scanning at least the first area according to predetermine... | 02/01/2005 |
| 6772621 | Tensiometer methods and apparatus A method for collecting data regarding a matric potential of a media includes providing a tensiometer having a stainless steel tensiometer casing, the stainless steel tensiometer casing comprising a tip portion which includes a wetted porous stainless steel membrane... | 08/10/2004 |
| 6766221 | Two-wire controlling and monitoring system for irrigation of localized areas of soil A two-wire controlling and monitoring system for in particular irrigation of localized areas of soil according to a aspect of the invention comprises a water pipeline, a first plurality of controllable irrigation valves, a second plurality of field sensors measuring... | 07/20/2004 |
| 6585168 | Differential relative humidity and temperature sensitive irrigation control An Electrically operated valve controls the flow of irrigation water. A clock or computer controls the time of day and a programmed watering schedule. The clock signal is serially connected through differential relative humidity (RH) and temperature sensi... | 07/01/2003 |
| 6452499 | Wireless environmental sensor system An environmental sensor system that communicates sensor data to a receiving unit using wireless means such as a radio frequency signal. The receiving unit interfaces with a controllable system, possibly affecting its operation. This arrangement allows one... | 09/17/2002 |
| 6453215 | Irrigation controller An irrigation controller in one embodiment comprising a microprocessor for controlling a plurality of watering zones of an irrigation system, a keyboard for enabling an inputting of commands relating to watering programs, a display for displaying informat... | 09/17/2002 |
| 6453216 | Method of controlling an irrigation system The present invention is a method of controlling an irrigation system that minimizes the use of irrigation water comprising defining a stop time for each watering event that is as late as possible to maximize the statistical contribution of predicted or a... | 09/17/2002 |
| 5944444 | Control system for draining, irrigating and heating an athletic field A control system for an athletic field coordinates drainage by gravity or vacuum-enhanced and irrigation by monitoring water level with respect to a subsurface membrane, wherein a flow network resides on the membrane and is covered by a fill layer, which ... | 08/31/1999 |
| 5860247 | Gas driven hydroponic system with a liquid pump outlet pipe connected to a variable buoyant float A multiple function hydroponics system consisting of three major components; a plant pot container, a reservoir container and a pumping chamber. The plant pot container has a drainage tube down into the reservoir, this drainage tube height is adjusted to ... | 01/19/1999 |
| 5836339 | Raindrop counter and control system for irrigation systems Disclosed is a raindrop counter and control system for irrigation systems which provides the quick detection of the presence, and subsequent absence of precipitation once it has first been detected. When applied to automatic irrigation systems and the lik... | 11/17/1998 |
| 5826792 | Automatic control incorporated within lawn watering systems An electrically operated water control valve is interposed in a sprinkler water line extending from a building structure and which is controlled by an air temperature sensor so that the water control valve will be turned off when the air temperature drops... | 10/27/1998 |