Center pivot irrigation control system

Details Center pivot irrigation control system Center pivot irrigation control system

1995-01-24

1997-03-25

Morris, Lesley D.

Fluid sprinkling, spraying, and diffusing

Mobile distributor

Irrigation device

239733, B05B 318

Patent

active

056136412

ABSTRACT:
A hydraulic control apparatus for hydraulically powered center pivot irrigation systems which utilizes dual-spool, four-way hydraulic valves for controlling the movement of inner support towers, and a pressure controlled directional valve with a dedicated high pressure line to control the direction and speed of the outer tower and hence of the entire system. One of the spools controls the clockwise movement of the irrigation system, while the second spool controls system movement in the counter clockwise direction. Should an inner support tower malfunction and fail to move, the outer sections can be driven back into realignment by simply reversing the hydraulic pressure in the two primary lines.

REFERENCES:
patent: 3386661 (1968-06-01), Olson
patent: 3628729 (1971-12-01), Thomas
patent: 3692045 (1972-09-01), Carr
patent: 3704827 (1972-12-01), Moulton
patent: 3713296 (1973-01-01), Black
patent: 3937237 (1976-02-01), Boone et al.
patent: 4135539 (1979-01-01), Hunter et al.
patent: 4155679 (1979-05-01), Cornelius et al.
patent: 5305958 (1994-04-01), Olson

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