Patents by Inventor Dwight Edward Anderson

Dwight Edward Anderson 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).

  • Patent number: 11965290
    Abstract: A refining member comprising a refining body with a refining surface comprising first and second refiner bars separated by first and second refiner grooves, respectively. The first refiner bars extend from a radially inward position to a first radially outward position. The second refiner bars extend to a second radially outward position that is nearer to an outermost part of the refining body than the first radially outward position. The second refiner bars have a longitudinal length from about 0.6 cm to about 10 cm. The first and second refiner bars have a respective first and second maximum height extending upward from a floor of a respective, adjacent first or second refiner groove. The second maximum height is at least 0.35 mm less than the first maximum height. The first refiner bars are adapted to refine wood fibers and the second refiner bars are adapted to break up fiber bundles.
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: April 23, 2024
    Assignee: INTERNATIONAL PAPER COMPANY
    Inventor: Dwight Edward Anderson
  • Patent number: 11905658
    Abstract: A refining member for a pulp refiner comprising a refining body with a refining surface comprising refiner bars separated by refiner grooves and teeth. Each of the refiner bars extend from a radially inward position on the refining surface to a first radially outward position on the refining surface, and the teeth extend to a second radially outward position on the refining surface. The second radially outward position is nearer to an outermost part of the refining body than the first radially outward position. The refiner bars are adapted to refine wood fibers, and the teeth are adapted to break up fiber bundles.
    Type: Grant
    Filed: October 6, 2020
    Date of Patent: February 20, 2024
    Assignee: INTERNATIONAL PAPER COMPANY
    Inventor: Dwight Edward Anderson
  • Publication number: 20230228034
    Abstract: A refining member including a refining body with a refining surface including first and second refiner bars separated by first and second refiner grooves. The first and second refiner bars extend from respective first and second radially inward positions to respective first and second radially outward positions. The first and second refiner bars have a respective first and second height extending upward from a floor of a respective, adjacent first or second refiner groove. The second height is a minimum height of the second refiner bars and is spaced apart from the second radially inward position, with the second height being at least about 0.35 mm less than the first height. The first refiner bars are adapted to refine wood fibers and the second refiner bars are adapted to break up fiber bundles.
    Type: Application
    Filed: August 22, 2022
    Publication date: July 20, 2023
    Inventor: Dwight Edward Anderson
  • Patent number: 11421382
    Abstract: A refining member including a refining body with a refining surface including first and second refiner bars separated by first and second refiner grooves. The first and second refiner bars extend from respective first and second radially inward positions to respective first and second radially outward positions. The first and second refiner bars have a respective first and second height extending upward from a floor of a respective, adjacent first or second refiner groove. The second height is a minimum height of the second refiner bars and is spaced apart from the second radially inward position, with the second height being at least about 0.35 mm less than the first height. The first refiner bars are adapted to refine wood fibers and the second refiner bars are adapted to break up fiber bundles.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: August 23, 2022
    Assignee: INTERNATIONAL PAPER COMPANY
    Inventor: Dwight Edward Anderson
  • Publication number: 20210262166
    Abstract: A refining member comprising a refining body with a refining surface comprising first and second refiner bars separated by first and second refiner grooves, respectively. The first refiner bars extend from a radially inward position to a first radially outward position. The second refiner bars extend to a second radially outward position that is nearer to an outermost part of the refining body than the first radially outward position. The second refiner bars have a longitudinal length from about 0.6 cm to about 10 cm. The first and second refiner bars have a respective first and second maximum height extending upward from a floor of a respective, adjacent first or second refiner groove. The second maximum height is at least 0.35 mm less than the first maximum height. The first refiner bars are adapted to refine wood fibers and the second refiner bars are adapted to break up fiber bundles.
    Type: Application
    Filed: May 10, 2021
    Publication date: August 26, 2021
    Inventor: Dwight Edward Anderson
  • Patent number: 11001968
    Abstract: A refining member comprising a refining body with a refining surface comprising first and second refiner bars separated by first and second refiner grooves, respectively. The first refiner bars extend from a radially inward position to a first radially outward position. The second refiner bars extend to a second radially outward position that is nearer to an outermost part of the refining body than the first radially outward position. The second refiner bars have a longitudinal length from about 0.6 cm to about 10 cm. The first and second refiner bars have a respective first and second maximum height extending upward from a floor of a respective, adjacent first or second refiner groove. The second maximum height is at least 0.35 mm less than the first maximum height. The first refiner bars are adapted to refine wood fibers and the second refiner bars are adapted to break up fiber bundles.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: May 11, 2021
    Assignee: INTERNATIONAL PAPER COMPANY
    Inventor: Dwight Edward Anderson
  • Publication number: 20210017705
    Abstract: A refining member for a pulp refiner comprising a refining body with a refining surface comprising refiner bars separated by refiner grooves and teeth. Each of the refiner bars extend from a radially inward position on the refining surface to a first radially outward position on the refining surface, and the teeth extend to a second radially outward position on the refining surface. The second radially outward position is nearer to an outermost part of the refining body than the first radially outward position. The refiner bars are adapted to refine wood fibers, and the teeth are adapted to break up fiber bundles.
    Type: Application
    Filed: October 6, 2020
    Publication date: January 21, 2021
    Inventor: Dwight Edward Anderson
  • Patent number: 10794003
    Abstract: A refining member for a pulp refiner comprising a refining body with a refining surface comprising refiner bars separated by refiner grooves and teeth. Each of the refiner bars extend from a radially inward position on the refining surface to a first radially outward position on the refining surface, and the teeth extend to a second radially outward position on the refining surface. The second radially outward position is nearer to an outermost part of the refining body than the first radially outward position. The refiner bars are adapted to refine wood fibers, and the teeth are adapted to break up fiber bundles.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: October 6, 2020
    Assignee: INTERNATIONAL PAPER COMPANY
    Inventor: Dwight Edward Anderson
  • Publication number: 20190316295
    Abstract: A refining member including a refining body with a refining surface including first and second refiner bars separated by first and second refiner grooves. The first and second refiner bars extend from respective first and second radially inward positions to respective first and second radially outward positions. The first and second refiner bars have a respective first and second height extending upward from a floor of a respective, adjacent first or second refiner groove. The second height is a minimum height of the second refiner bars and is spaced apart from the second radially inward position, with the second height being at least about 0.35 mm less than the first height. The first refiner bars are adapted to refine wood fibers and the second refiner bars are adapted to break up fiber bundles.
    Type: Application
    Filed: June 28, 2019
    Publication date: October 17, 2019
    Inventor: Dwight Edward Anderson
  • Publication number: 20190203417
    Abstract: A refining member for a pulp refiner comprising a refining body with a refining surface comprising refiner bars separated by refiner grooves and teeth. Each of the refiner bars extend from a radially inward position on the refining surface to a first radially outward position on the refining surface, and the teeth extend to a second radially outward position on the refining surface. The second radially outward position is nearer to an outermost part of the refining body than the first radially outward position. The refiner bars are adapted to refine wood fibers, and the teeth are adapted to break up fiber bundles.
    Type: Application
    Filed: January 2, 2018
    Publication date: July 4, 2019
    Inventor: Dwight Edward Anderson
  • Publication number: 20190203418
    Abstract: A refining member comprising a refining body with a refining surface comprising first and second refiner bars separated by first and second refiner grooves, respectively. The first refiner bars extend from a radially inward position to a first radially outward position. The second refiner bars extend to a second radially outward position that is nearer to an outermost part of the refining body than the first radially outward position. The second refiner bars have a longitudinal length from about 0.6 cm to about 10 cm. The first and second refiner bars have a respective first and second maximum height extending upward from a floor of a respective, adjacent first or second refiner groove. The second maximum height is at least 0.35 mm less than the first maximum height. The first refiner bars are adapted to refine wood fibers and the second refiner bars are adapted to break up fiber bundles.
    Type: Application
    Filed: January 2, 2018
    Publication date: July 4, 2019
    Inventor: Dwight Edward Anderson
  • Publication number: 20190078259
    Abstract: A method is provided for processing wood fibers comprising providing a refiner comprising a first refining member including first refiner bars and a second refining member including second refiner bars. The first refining member may be spaced from the second refining member to define a refining space therebetween. The first and second refiner bars may be separated by refiner grooves. The method further involves rotating at least one of the first refining member or the second refining member, and supplying a slurry of wood pulp comprising wood fibers to the refiner such that the wood pulp slurry passes through the refining space. The one refining member is rotated at a power level sufficient to create a refining intensity within the refining space of at least about 3 Newtons.
    Type: Application
    Filed: September 11, 2018
    Publication date: March 14, 2019
    Inventors: Dwight Edward Anderson, David Verd Reed, Leonard E Schuster