Abstract: A track assembly for a mobile tower of an irrigation system includes: a mounting bracket configured to be attached to the mobile tower; a gearbox assembly and rotatable drive wheel hub attached to the mounting bracket; a drive wheel attached to the drive hub; rotatable tension wheel hub attached to the mounting bracket and spaced from the drive hub; a tension wheel attached to the tension wheel hub; and a track trained over the drive wheel and the tension wheel and driven by the drive wheel to propel the mobile tower.

Abstract: A tire-pressure mount apparatus having a compartment in communication with a wheel and tire assembly. The compartment has a removable closure with a tire-pressure sensor and a valve stem mounted thereon so as to permit simultaneous removal of the tire-pressure sensor and valve stem when the closure is removed from the compartment, thus providing access thereto without requiring disassembly of the wheel and tire assembly.

Abstract: A corner unit guidance control system for use with a corner unit that is part of a center pivot irrigation system includes a primary antenna, a secondary antenna, a receiver, and a controller. The primary antenna and the secondary antenna may receive signals from at least one external positional information source. The receiver may be in communication with the antennas and operable to process the signals to produce position data corresponding to a current position of a wheel and altitude data about the height of the antennas. The controller may be in communication with the receiver and may be programmed to steer the wheel to a heading corresponding to a difference between the current position of the wheel and a point along the path and further programmed to calculate a tilt angle from the altitude data and adjust the heading based on the tilt angle.

Abstract: An irrigation system includes a central pivot; a main section pivotally connected to the central pivot; and at least one solar panel supported on the main section. A control system positions the main section relative to the central pivot so that the solar panel faces the sun.

Abstract: An irrigation system includes a central pivot and a series of mobile towers connected to the central pivot and to one another by support structure. Each mobile tower has wheels and a motor for driving at least one of the wheels. A control system operates the motors to maintain alignment of the mobile towers and the central pivot while preventing power usage of the system from exceeding a maximum power threshold. The control system determines in which sequence to operate the motors to maintain alignment of the mobile towers while operating no more than a selected number of the motors simultaneously.

Abstract: A system and method for controlling the positioning of an extension arm of a center pivot irrigation system. The method determines at least some boundaries of a field to be irrigated; determines positions for the end tower along a path in the field; determines a desired angular orientation of the extension arm relative to the end tower for each of the positions of the end tower along the path based at least partially on the boundaries; and stores in memory desired angular orientations of the extension arm associated with positions of the end tower along the path. The method determines an actual position of the end tower while the irrigation system is in operation; determines an actual angular orientation of the extension arm relative to the end tower; accesses the memory and determines the desired angular orientation of the extension arm; and compares the actual angular orientation to the desired angular orientation.

Abstract: An irrigation system comprises a central pivot; a main section pivotally connected to the central pivot; and a control system for positioning the main section to minimize wind damage. The control system comprises a location-determining component for determining a current position or bearing of the main section; a wind sensor for determining wind direction; and a computing device coupled with the wind sensor and the location-determining component for determining an optimal orientation of the main section based on an output of the wind sensor and the current position or bearing of the main section and for directing the motors to drive the wheels of the mobile towers to orient the main section in the optimal orientation.

Abstract: An irrigation system includes a central pivot and a series of mobile towers connected to the central pivot and to one another by support structure. Each mobile tower has wheels and a motor for driving at least one of the wheels. A control system for maintaining alignment of the mobile towers includes a location-determining component for determining a position or orientation of each of the mobile towers and a computing device operable to detect mis-alignment of the mobile towers based on the position or orientation of each of the mobile towers, determine a control sequence to re-align the mobile towers, and send commands to at least one of the motors for implementing the control sequence.

Abstract: An apparatus is disclosed for connecting truss rods and other rigid braces of an irrigation system, wherein the rods include shaft sections with enlarged cylindrical heads at the ends thereof and form part of a truss-type framework supporting a conduit. A coupling assembly for holding a pair of such truss rods together in axial alignment is disclosed and includes a top plate and a bottom plate clamped together with a connecting bolt having a non-circular collar. The collar on the bolt cooperates with similarly shaped holes in the plates of the coupling assembly to prevent relative rotation between the plates and also between the bolt and the coupling assembly. The bolt includes a head with a hexagonal drive recess for use with an appropriate driving tool.

Abstract: An inflatable tube having multiple chambers that are independently inflatable and deflatable so that loss of air pressure in one chamber does not result in loss of air pressure in another chamber, the tube being particularly suitable for use with a wheel and tire assembly of an agricultural implement.

Abstract: A track assembly for a mobile tower of an irrigation system includes: a mounting bracket configured to be attached to the mobile tower; a gearbox assembly and rotatable drive wheel hub attached to the mounting bracket; a drive wheel attached to the drive hub; rotatable tension wheel hub attached to the mounting bracket and spaced from the drive hub; a tension wheel attached to the tension wheel hub; and a track trained over the drive wheel and the tension wheel and driven by the drive wheel to propel the mobile tower.

Abstract: A tire-pressure mount apparatus having a compartment in communication with a wheel and tire assembly. The compartment has a removable closure with a tire-pressure sensor and a valve stem mounted thereon so as to permit simultaneous removal of the tire-pressure sensor and valve stem when the closure is removed from the compartment, thus providing access thereto without requiring disassembly of the wheel and tire assembly.

Abstract: A track assembly for a mobile tower of an irrigation system includes a mounting bracket; a gearbox assembly and rotatable drive wheel hub attached to the mounting bracket; a drive wheel attached to the drive hub; a rotatable tension wheel hub attached to the mounting bracket and spaced from the drive hub; a tension wheel attached to the tension wheel hub; a track belt trained over the drive wheel and the tension wheel and driven by the drive wheel to propel the mobile tower; and structure for pivotally mounting the mounting bracket to the mobile tower.

Abstract: A bearing structure for a pivoting irrigation system apparatus having a rotatable vertical section with a plurality of annular assemblies mounted thereon. The assemblies include a plurality of components that are rotatable and non-rotatable with the rotatable vertical section so as to facilitate movement with decreased friction therebetween.

Abstract: To allow for optimal uniform application of irrigation fluid in a field space outfitted with a center pivot irrigation machine having a main pipeline and an auxiliary or corner pipeline, the auxiliary pipeline is operable to both lead and lag the main pipeline as the main pipeline makes a progressive rotation in a single direction through the field space. In one embodiment a control system for the irrigation machine comprises a buried cable control system. In another embodiment a control system comprises a global positioning satellite control system. In a third embodiment a control system comprises at least two position sensing devices, a first device for sensing an angle of the main pipeline with respect to a center tower and a second device for sensing an angle between the main pipeline and the auxiliary pipeline, and a speed controlling device for controlling a speed of rotation of the main and auxiliary pipelines.

Abstract: A lateral move irrigation system may comprise a plurality of towers configured to laterally travel across a field and a plurality of support structures each attached to and spanning a distance between two of the towers. The irrigation system may further comprise a fluid delivery system comprising conduits attached to or extending through the support structures and configured to output water from orifices formed therein. The irrigation system may also comprise a first joint at which one of the support structures may pivot relative to another of the support structures and a control system configured to pivot one of the support structures toward another of the support structures at a location of a field that is not passable when all of the support structures are laterally aligned with each other.

Abstract: A lateral irrigation system comprising a plurality of towers and a plurality of lateral structures extending between and connected to the towers. The support structures may comprise a first support structure, a second support structure pivotable relative to the first support structure, and a third support structure pivotable relative to the second support structure. The irrigation system may also comprise a fluid delivery system having conduits attached to or extending through the support structures and configured to output water from orifices formed therein. The irrigation system may further comprise joints at which the second and third support structures may pivot. The second and third support structures may be configured to pivot into a substantially zig-zag or “Z”-shaped configuration relative to the first support structure.

Abstract: A lateral move irrigation system comprising a main section having a first end and a second end, a first end section pivotally joined at the first end of the main section, a second end section pivotally joined at the second end of the main section, and a fluid delivery system. The main section may comprise a plurality of main towers configured to travel across a field in a lateral direction and a plurality of main support structures fixedly connected to and extending between adjacent ones of the main towers. The main support structures may be laterally aligned from the first end to the second end of the main section. The fluid delivery system may extend through the main section, first section, and second section. The first section may be pivoted into a Z-shaped configuration and the second section may be pivoted about a single joint.

Abstract: A control system for stopping or reversing movement of an irrigation system comprises an electronic proximity sensor and a control device. The electronic proximity sensor is configured for mounting to the irrigation system and operable to detect a target. The control device is responsive to the electronic proximity sensor for stopping or reversing movement of the irrigation system when the electronic proximity sensor detects the target.

Abstract: A control system for controlling operation of an irrigation system end gun includes memory for storing end gun operating parameters for a plurality of locations in an area to be irrigated; a location determining component for determining a current location of the end gun in the area to be irrigated; a computing device in communication with the location determining component and operable to access an end gun operating parameter from the memory that corresponds to the current location of the end gun; and an end gun control mechanism responsive to the computing device for controlling operation of the end gun in accordance with the end gun operating parameter.