Patents by Inventor Matthew Nugent Christensen

Matthew Nugent Christensen 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).

  • Turf system for sprinklers
    Patent number: 11679405
    Abstract: There is provided a turf cup assembly that attaches to a buried pop-up type sprinkler to blend a top of sprinkler both cosmetically and functionally with turf surrounding the sprinkler. The turf cup assembly includes a turf cup and a sleeve. The turf cup mounts to a riser of the pop-up type sprinkler. The turf cup contains soil and root structure of turf. The sleeve surrounds the turf cup and attaches to a top of a housing of a pop-up sprinkler. The sleeve can be at or slightly below grade, and the cup extends out of the sleeve during an irrigation cycle and retracts into the sleeve at the end of the irrigation cycle.
    Type: Grant
    Filed: February 11, 2021
    Date of Patent: June 20, 2023
    Assignee: Rain Bird Corporation
    Inventors: Michael A. McAfee, Daniel Roger St. George, Matthew Nugent Christensen
  • Turf System For Sprinklers
    Publication number: 20210162449
    Abstract: There is provided a turf cup assembly that attaches to a buried pop-up type sprinkler to blend a top of sprinkler both cosmetically and functionally with turf surrounding the sprinkler. The turf cup assembly includes a turf cup and a sleeve. The turf cup mounts to a riser of the pop-up type sprinkler. The turf cup contains soil and root structure of turf. The sleeve surrounds the turf cup and attaches to a top of a housing of a pop-up sprinkler. The sleeve can be at or slightly below grade, and the cup extends out of the sleeve during an irrigation cycle and retracts into the sleeve at the end of the irrigation cycle.
    Type: Application
    Filed: February 11, 2021
    Publication date: June 3, 2021
    Inventors: Michael A. McAfee, Daniel Roger St. George, Matthew Nugent Christensen
  • Turf system for sprinklers
    Patent number: 10946405
    Abstract: There is provided a turf cup assembly that attaches to a buried pop-up type sprinkler to blend a top of sprinkler both cosmetically and functionally with turf surrounding the sprinkler. The turf cup assembly includes a turf cup and a sleeve. The turf cup mounts to a riser of the pop-up type sprinkler. The turf cup contains soil and root structure of turf. The sleeve surrounds the turf cup and attaches to a top of a housing of a pop-up sprinkler. The sleeve can be at or slightly below grade, and the cup extends out of the sleeve during an irrigation cycle and retracts into the sleeve at the end of the irrigation cycle.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: March 16, 2021
    Assignee: Rain Bird Corporation
    Inventors: Michael A. McAfee, Daniel Roger St. George, Matthew Nugent Christensen
  • Turf System For Sprinklers
    Publication number: 20190105681
    Abstract: There is provided a turf cup assembly that attaches to a buried pop-up type sprinkler to blend a top of sprinkler both cosmetically and functionally with turf surrounding the sprinkler. The turf cup assembly includes a turf cup and a sleeve. The turf cup mounts to a riser of the pop-up type sprinkler. The turf cup contains soil and root structure of turf. The sleeve surrounds the turf cup and attaches to a top of a housing of a pop-up sprinkler. The sleeve can be at or slightly below grade, and the cup extends out of the sleeve during an irrigation cycle and retracts into the sleeve at the end of the irrigation cycle.
    Type: Application
    Filed: September 17, 2018
    Publication date: April 11, 2019
    Inventors: Michael A. McAfee, Daniel Roger St. George, Matthew Nugent Christensen