Lindsay Corporation

John Grabow

Mark William Miller

Jochen Pfrenger

Reece Robert Andrews

Luke Joseph Barker

Wayne D Choat

George Williard

A lateral move irrigation system more effectively irrigates a field by minimizing the portions of the field that receive no irrigation. The irrigation system includes a plurality of mobile towers, a plurality of elongated support structures attached to and extending between the towers, and a fluid delivery system. Each mobile tower has wheels and a motor for driving the wheels. A safety circuit stops the motors on all the mobile towers when any of the towers reaches an end-of-run position. Location determining components determine locations of the mobile towers as they traverse a field, and a control system stops or slows any of the towers before they trigger the safety circuit so that lagging mobile tower may catch up before the safety circuit shuts down or reverses all the motors.

Lateral irrigation system with improved end-of-run control

A corner unit guidance control system for use with a corner unit that is part of a center pivot irrigation system includes an antenna, a receiver, and a controller. The antenna may be located along a vertical axis through the center of a wheel of the corner unit and may be operable to receive signals from at least one external positional information source. The receiver may be in communication with the antenna and operable to process the signals to produce position data corresponding to a current position of the wheel. 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.

Corner unit guidance control system using one antenna

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.

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Ft. Calhoun, NE, United States of America

John Grabow