Fluid sprinkling – spraying – and diffusing – Mobile distributor – Irrigation device
Reexamination Certificate
2002-10-23
2004-11-23
Mar, Michael (Department: 3752)
Fluid sprinkling, spraying, and diffusing
Mobile distributor
Irrigation device
Reexamination Certificate
active
06820828
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to circle irrigation and, more specifically, to chemical application control within said systems by varying the height from the chemical application nozzles to the application area, spacing of the nozzles along the boom, delay switches for movement of the towers relative to turning the nozzles on and off, diaphragms providing quick cycling of the on-off of the nozzles without leakage, pressure valves for varying the nozzle pressure within a boom and means for mixing and monitoring a plurality of chemicals within water and eliminating the possibility of back flushing the chemical mixture into the water supply.
2. Description of the Prior Art
There are other irrigation system designed for circle irrigation. Typical of these is U.S. Pat. No. 3,326,232 issued to Otis C. Stamps et al. on June 20, 1967.
Another patent was issued to Brown et al. on Mar. 14, 1972 as U.S. Pat. No. 3,648,930. Yet another U.S. Pat. No. 3,979,062 was issued to Christensen et al. on Sep. 7, 1976 and still yet another was issued on Jul. 7, 1981 to Garvey as U.S. Pat. No. 4,277,026.
Another patent was issued to Schram on Aug. 9, 1983 as U.S. Pat. No. 4,397,421. Yet another U.S. Pat. No. 4,763,836 was issued to Lyle et al. on Aug. 16, 1988. Another was issued to McCann et al. on Sep. 21, 1993 as U.S. Pat. No. 5,246,164 and still yet another was issued on Oct. 21, 1997 to Chapman as U.S. Pat. No. 5,678,771.
Another patent was issued to Gunther on Jul. 14, 1998 as U.S. Pat. No. 5,779,163. Yet another U.S. Pat. No. 6,036,121 was issued to Gerdes on Mar. 14, 2000. Another was issued to LaRue et al. on Oct. 31, 2000 as U.S. Pat. No. 6,138,928 and still yet another was issued on May 8, 2001 to McQuinn as U.S. Pat. No. 6,230,091.
U.S. Pat. No, 3,326,232
Inventor: Otis C. Stamps et al.
Issued: Jun. 20, 1967
Shown is an apparatus for distributing liquid fertilizer to land comprising a container for liquid fertilizer, a conduit therefrom leading to a first pump means to raise the pressure of liquid and connected thereto, outlet means from said pressure raising first pump means leading to a pressure indicating means and connected operatively thereto, an adjustable pressure relief valve connected to said outlet means, a flowmeter with an inlet and outlet, and an inlet of said flowmeter connected to said outlet means from said pressure raising first pump means, the outlet of the pressure relief means operatively connected to said container, a flow regulating means operatively attached to the outlet end of said flowmeter, said flow regulating means provided with an outlet means, a check valve, that outlet means to connected to the inlet of said check valve, a water well, a second pump operatively attached to that well water, a motor operatively attached to that second pump, a discharge line operatively attached to the second pump, a moving irrigator operatively attached to the line, the outlet of said check valve is operatively connected to said line, a shaft is connected to the motor and driven thereby, and said shaft is connected to the second pump and drives the second pump and is connected to and drives the first pump means for raising the pressure of said liquid fertilizer.
U.S. Pat. No. 3,648,930
Inventor: Perry R. Brown et al.
Issued: Mar. 14, 1972
A system for applying agricultural chemicals in small amounts over a large area. A low-capacity spray system carried on and operated by a high-capacity self-propelled sprinkling irrigation system. A group of oscillating spray arms carried on and spaced along an irrigation pipeline, the arms being oscillated and the spray being turned on by the irrigation pipeline motor control to provide spraying as the pipeline is moved.
U.S. Pat. No. 3,979,062
Inventor: Dale A. Christensen et al.
Issued: Sep. 7, 1976
A water balance control for a pivotal end boom connected to the outer end of a center pivot irrigation system to irrigate peripheral areas (e.g., corners) beyond the periphery of the circular area covered by the main conduit of the system; the water balance control comprises a sensing mechanism for sensing both the angular position of the boom and its direction of movement (swing-out or swing-in) relative to the end of the main conduit. Primary control circuits, actuated by the sensing mechanism, turn the boom nozzles on and off, depending on the angular position of the boom; secondary control circuits, also actuated by the sensing mechanism, operate the primary controls in accordance with two different programs, one for swing-out movement and the other for swing-in movement. A speed control for the main conduit, also actuated by the sensing mechanism, is included.
U.S. Pat. No. 4,276,026
Inventor: Peter M. Garvey
Issued: Jul. 7, 1981
Apparatus for treating a field crop with liquid chemical for use with a water irrigation system of the type including a plurality of longitudinally spaced towers, and a mechanism for intermittently moving each of the towers to move the system through the field. The apparatus comprises a first assembly for applying liquid chemical to the field crop canopy and/or ground in a first pattern arranged to extend from one of the towers a majority of the distance toward an adjacent tower in amounts which diminish in a direction away from the one tower, a solenoid valve for communicating liquid chemical under pressure with the first pattern applying assembly only when the one tower is in motion. A second assembly for applying liquid chemical to the field crop canopy and/or ground in a second pattern arranged to extend from the adjacent tower for a majority of the distance toward the one tower in amounts which diminish in a direction away from the adjacent tower, and a solenoid valve for communicating liquid chemical under pressure with the second pattern applying means only when the adjacent tower is in motion.
U.S. Pat. No. 4,397,421
Inventor: Daniel R. Schram
Issued: Aug. 9, 1983
A liquid chemical spraying apparatus is described whereby liquid chemical may be applied to a field by utilizing a center pivot irrigation system. The center pivot irrigation system comprises a water supply pipe which is movable about a center pivot and which is supported by a plurality of spaced-apart drive towers for propelling the supply pipe around the center pivot. Each of the drive towers includes an electric drive that is responsive to an alignment control to maintain the supply pipe in an aligned condition as it travels about the center pivot. The spraying apparatus is vertically movably supported from the supply pipe or the truss system supporting the pipe. The spraying apparatus comprises a main supply line, which is in communication with a source of liquid chemical. First and second applicator lines are in fluid communication with the main supply line. A control valve is positioned between the main supply line and the applicator lines at each of the drive towers and is operatively connected to the alignment control for the drive tower so that chemical will be supplied from the main supply line to the applicator lines only when the associated drive tower is being driven. Manually operated selector valves are positioned between the main supply line control valve and the applicator lines so that chemical may be selectively supplied to either or both of the applicator lines. A plurality of spaced-apart spray nozzles are provided on each of the applicator lines for spraying the chemical on the area beneath the irrigation system. The source of chemical, main supply line and applicator lines are fluidly isolated from the water in the water supply pipe to prevent contamination of the source of water. The chemical may be sprayed on to the area in conjunction with or apart from the application of water to the field.
U.S. Pat. No. 4,763,836
Inventor: William M. Lyle
Issued: Aug. 16, 1988
Apparatus for precise water and liquid chemical application to agricultural fields is provided comprising a control platform with two motors, each motor driving a separate set of drive wheels. The s
Bui Thach H.
Kroll Michael I
Mar Michael
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