Patents by Inventor Craig B. Nelson
Craig B. Nelson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11964293Abstract: A rigid mount orbitor sprinkler assembly incorporates a deflector plate configuration that is configured for both spinning/rotating motion as well as orbital or wobbling motion around the center of a spool assembly. The sprinkler incorporates structure to reduce drool that may fall in a concentrated area below the sprinkler and to prevent debris from sandy water or the like from accelerating sprinkler component wear. With reduced vibration, the assembly may be rigidly mounted on a center pivot or other supporting structure while achieving the advantages associated with wobbling and rotating sprinkler assemblies.Type: GrantFiled: June 11, 2020Date of Patent: April 23, 2024Assignee: NELSON IRRIGATION CORPORATIONInventors: George L. Sesser, Craig B. Nelson
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Patent number: 11933408Abstract: A flow control device includes a housing with an inlet and an outlet and a flow conduit disposed in the housing. The inlet, the flow conduit, and the outlet define a flow passage. A valve seat is disposed in the housing downstream of the inlet, and a shuttle is movably disposed in the housing and displaceable between a closed position engaging the valve seat to close the flow passage and an open position spaced from the valve seat to open the flow passage. A sealed chamber is defined between the housing and the flow conduit. A port coupled with a source of pressurized fluid communicates with the sealed chamber, where the shuttle is displaceable between the closed position and the open position based on a pressure in the sealed chamber. The threshold water pressure for displacing the flow conduit may be adjustable by modifying the pressure in the sealed chamber.Type: GrantFiled: September 14, 2021Date of Patent: March 19, 2024Assignee: NELSON IRRIGATION CORPORATIONInventors: Craig B. Nelson, Riley D. Greenwood
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Publication number: 20240081202Abstract: A sprinkler controller is cooperable with a sprinkler assembly that receives fluid input from a pipe span. The sprinkler controller includes a microcontroller circuit, a motion sensor coupled with the microcontroller circuit, and a valve assembly including a modulator coupled with the microcontroller circuit and a valve coupled with the sprinkler assembly. The valve meters or controls an amount of fluid output from the sprinkler assembly, and the microcontroller circuit is programmed to control the valve assembly based on input from the motion sensor. With a series of sprinkler controllers in a center pivot irrigation system, the drop numbers for each of the sprinkler assemblies can be determined based on input from the motion sensors.Type: ApplicationFiled: March 15, 2022Publication date: March 14, 2024Inventors: Meade M. NEAL, Mark A. Bauman, Craig B. NELSON, Travis A. GRIGGS
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Patent number: 11885450Abstract: A quick connect coupler includes a female connector having a central bore and a plurality of recesses, and a male connector having a post insertable into the central bore. The male connector has a first tab row with a plurality of first tabs and a second tab row with a plurality of second tabs axially spaced from the plurality of first tabs. The first and second tabs are shaped corresponding to the recesses in the female connector. The first and second tab rows are circumferentially offset to effect a two- or multi-step connection between the female connector and the male connector.Type: GrantFiled: February 22, 2021Date of Patent: January 30, 2024Assignee: NELSON IRRIGATION CORPORATIONInventors: Craig B. Nelson, Chad D. Leinweber, Mathew L. Zimmerman
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Publication number: 20230383867Abstract: A drop hose clamp for securing a drop hose in a center pivot irrigation system includes a bottom section positionable over a truss rod or in engagement with a span pipe, and a top section pivotally connected to the bottom section and displaceable between an open position and a closed position. With the top section in the closed position, the bottom section and the top section together define a channel that is configured to receive and secure the drop hose. The drop hose clamp may be secured to the truss rod or the span pipe using a connector positioned through a connector slot.Type: ApplicationFiled: May 22, 2023Publication date: November 30, 2023Inventors: Tanner R. DRUFFEL, Andrew B. HELLIE, Craig B. NELSON, Meade M. NEAL
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Patent number: 11745207Abstract: A sprinkler includes a pop-up deflector plate that is engageable with a brake assembly in an extended position. A brake module is secured to a sprinkler body and includes a rotatable connector coupled with the brake assembly. The pop-up deflector plate is disposed adjacent the nozzle and engages the rotatable connector in the extended position.Type: GrantFiled: July 6, 2020Date of Patent: September 5, 2023Assignee: NELSON IRRIGATION CORPORATIONInventors: Steven E. Crawford, Andrew B. Hellie, Craig B. Nelson
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Patent number: 11505354Abstract: A packaging/inspection system is provided for a nozzle pivot package including a collection of nozzles in various nozzle sizes. The packaging/inspection system includes a shelf assembly with a plurality of compartments, an operator load track, a verification section downstream of the operator load track, a marking section downstream of the verification section, and an operator unload track downstream of the marking section. Each compartment may store nozzles of a specific nozzle size. Features of the shelf assembly alert the operator as to which compartment should be accessed and how many nozzles from the compartment are required.Type: GrantFiled: February 8, 2021Date of Patent: November 22, 2022Assignee: NELSON IRRIGATION COPORATIONInventors: Theodore J. Bren, Craig B. Nelson, Paul D. Davisson
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Publication number: 20220268385Abstract: A quick connect coupler includes a female connector having a central bore and a plurality of recesses, and a male connector having a post insertable into the central bore. The male connector has a first tab row with a plurality of first tabs and a second tab row with a plurality of second tabs axially spaced from the plurality of first tabs. The first and second tabs are shaped corresponding to the recesses in the female connector. The first and second tab rows are circumferentially offset to effect a two- or multi-step connection between the female connector and the male connector.Type: ApplicationFiled: February 22, 2021Publication date: August 25, 2022Inventors: Craig B. Nelson, Chad D. Leinweber, Mathew L. Zimmerman
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Patent number: 11376621Abstract: A weighted inverted sprinkler assembly adapted for use with a drop hose of an irrigation system is disclosed. The assembly comprises a coiled weight formed from a coiled wire, a sprinkler fluidly associated with the drop hose, and a coiled weight support structure. A pressure regulator may be provided in fluid associated with the irrigation drop hose and the sprinkler. The coiled weight has a shape that is selected for use with a particular sprinkler assembly. The shape may be an elongated shape for use with an elongated coiled weight support structure, a beehive shape for use with a pressure regulator having a collar to support the coiled weight, and a pear shape for use with a pressure regulator having a flared housing. The coiled weight is preferably formed from a single coiled wire although two or more weights may be used in combination in a given application.Type: GrantFiled: April 16, 2018Date of Patent: July 5, 2022Assignee: Nelson Irrigation CorporationInventors: Sean M. Scott, Riley D. Greenwood, Craig B. Nelson
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Publication number: 20220168759Abstract: A sprinkler nozzle is configured for a sprinkler positioned at a distal end of a center pivot irrigation system. The sprinkler nozzle includes a connection part securable to the sprinkler, and a nozzle opening downstream of the connection part. A nozzle opening downstream of the connection part is part-toroidal shaped and partially blocked or skewed to control water flow to portions of the deflector plate according to a desired wetted area. The part-toroidal shape spans an arc less than 360 degrees. The nozzle enables a custom designed water application to complement the other sprinklers that are on the pivot and can be shaped to also apply water a distance beyond the end of the pivot pipe to match the application rate of the sprinklers along the pivot pipe.Type: ApplicationFiled: November 10, 2021Publication date: June 2, 2022Inventors: Lee A. Perkins, Craig B. Nelson, Loren Vander Griend
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Patent number: 11325147Abstract: A sprinkler includes a pop-up deflector plate that is engageable with a brake assembly in an extended position. A brake module is secured to a sprinkler body and includes a rotatable connector coupled with the brake assembly. The pop-up deflector plate is disposed adjacent the nozzle and engages the rotatable connector in the extended position.Type: GrantFiled: July 25, 2019Date of Patent: May 10, 2022Assignee: NELSON IRRIGATION CORPORATIONInventors: Steven E. Crawford, Craig B. Nelson
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Publication number: 20210404572Abstract: A flow control device includes a housing with an inlet and an outlet and a flow conduit disposed in the housing. The inlet, the flow conduit, and the outlet define a flow passage. A valve seat is disposed in the housing downstream of the inlet, and a shuttle is movably disposed in the housing and displaceable between a closed position engaging the valve seat to close the flow passage and an open position spaced from the valve seat to open the flow passage. A sealed chamber is defined between the housing and the flow conduit. A port coupled with a source of pressurized fluid communicates with the sealed chamber, where the shuttle is displaceable between the closed position and the open position based on a pressure in the sealed chamber. The threshold water pressure for displacing the flow conduit may be adjustable by modifying the pressure in the sealed chamber.Type: ApplicationFiled: September 14, 2021Publication date: December 30, 2021Inventors: Craig B. NELSON, Riley D. GREENWOOD
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Publication number: 20210346902Abstract: An automatic reversible arc assembly for a sprinkler includes a pair of primary stop members circumferentially spaced from each other by a first amount, and a pair of secondary stop members circumferentially spaced from each other by a second amount, different from the first amount. The primary stop members and the secondary stop members are coupled together and define a pivot assembly pivotable between a first position and a second position. A timer module cooperable with the pivot assembly is configured to hold the pivot assembly in the first position for a selectable period of time, after which the timer module enables the pivot assembly to pivot to the second position. The primary stop members are active in the first position, and the secondary stop members are active in the second position.Type: ApplicationFiled: July 21, 2021Publication date: November 11, 2021Inventors: Mathew L. Zimmerman, Craig B. Nelson, Chad D. Leinweber, Joseph Daniel Sinden
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Patent number: 11154882Abstract: A sprinkler body for a rotating sprinkler includes a base securable to a source of water under pressure, a plurality of support struts connected to and extending from the base, and a deflector plate support connected to the plurality of support struts and disposed spaced from the base by the support struts. At least one of the plurality of support struts is wedge-shaped with an inward-facing apex. The support struts are configured to create a void in the water spray pattern away from a center pivot pipe and to direct the water spray downward to limit the effect of wind on the spray pattern.Type: GrantFiled: December 11, 2018Date of Patent: October 26, 2021Assignee: NELSON IRRIGATION CORPORATIONInventors: Craig B. Nelson, Andrew B. Hellie, Sean M. Scott
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Patent number: 11090671Abstract: An automatic reversible arc assembly for a sprinkler includes a pair of primary stop members circumferentially spaced from each other by a first amount, and a pair of secondary stop members circumferentially spaced from each other by a second amount, different from the first amount. The primary stop members and the secondary stop members are coupled together and define a pivot assembly pivotable between a first position and a second position. A timer module cooperable with the pivot assembly is configured to hold the pivot assembly in the first position for a selectable period of time, after which the timer module enables the pivot assembly to pivot to the second position. The primary stop members are active in the first position, and the secondary stop members are active in the second position.Type: GrantFiled: July 22, 2019Date of Patent: August 17, 2021Assignee: NELSON IRRIGATION CORPORATIONInventors: Mathew L. Zimmerman, Craig B. Nelson, Chad D. Leinweber, Joseph Daniel Sinden
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Patent number: 11085568Abstract: A gooseneck pipe includes a first pipe half having a first radiused centerline curve, and a second pipe half fixed to the first pipe half and having a second radiused centerline curve. The first and second pipe halves define a flow path. Cross-sectional diameters of the first and second pipe halves vary along the flow path. The varying diameters of the first and second pipe halves serve to mitigate pressure losses due in part to Dean vortices or secondary flow patterns in the flow path when a fluid is turned in the gooseneck pipe.Type: GrantFiled: July 7, 2017Date of Patent: August 10, 2021Assignee: NELSON IRRIGATION CORPORATIONInventors: Craig B. Nelson, Reid A. Nelson, Riley D. Greenwood, Chad D. Leinweber, Michael R. Townsend
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Patent number: 11045823Abstract: A rotary nozzle sprinkler includes a base assembly with a bearing, a stem mounted rotatably in the bearing, and an elbow coupled at a proximal end to and rotatable with the stem and including an elbow bend. A nozzle is secured to a distal end of the elbow, and a diffuser assembly including a brake mechanism is cooperable with the elbow. By positioning the nozzle downstream of the elbow, the sprinkler can achieve a greater throw radius.Type: GrantFiled: November 8, 2017Date of Patent: June 29, 2021Assignee: NELSON IRRIGATION CORPORATIONInventors: George L. Sesser, Craig B. Nelson, Barton R. Nelson
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Patent number: 11040358Abstract: A rigid mount orbitor sprinkler assembly incorporates a deflector plate configuration that is configured for both spinning/rotating motion as well as orbital or wobbling motion around the center of a spool assembly. The sprinkler includes a spider ingress opening cooperable with a spider barrier that in combination permit inevitable spider ingress while preventing spider access or contact with certain moving parts of the sprinkler.Type: GrantFiled: August 31, 2018Date of Patent: June 22, 2021Assignee: NELSON IRRIGATION CORPORATIONInventors: George L. Sesser, Craig B. Nelson
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Patent number: 11020756Abstract: A spool and wobbler assembly for a sprinkler includes a spool section with facing spool flanges on opposite sides of a spool core, where at least one of the spool flanges includes a circumferential rolling ledge. A wobbler cage including a wobbler ring is supported on the spool section, and a water deflector plate is coupled with the wobbler cage. An underside of the wobbler ring is provided with a circumferential rolling surface that engages the circumferential rolling ledge of the at least one spool flange. The rolling surface and rolling ledge provide for smoother orbital motion of the deflector plate.Type: GrantFiled: July 18, 2018Date of Patent: June 1, 2021Assignee: NELSON IRRIGATION CORPORATIONInventors: George L. Sesser, Craig B. Nelson, Andrew B. Hellie, Steven E. Crawford
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Patent number: 11002394Abstract: A quick connect joint includes a base with first and second lock receivers on opposite sides of the base, and a connection plate including first and second engagement members engageable with the first and second lock receivers, respectively. The first engagement member is displaceable between a release position and lock position, and the first engagement member is rotatable between an insert position and a connect position. The quick connect joint creates a safe and reliable connection.Type: GrantFiled: April 12, 2018Date of Patent: May 11, 2021Assignee: NELSON IRRIGATION CORPORATIONInventors: Mathew L. Zimmerman, Craig B. Nelson, Chad D. Leinweber, Joseph Daniel Sinden