Patents by Inventor David William Drury Harrison

David William Drury Harrison 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: 11949314
    Abstract: Example brush holder assemblies of an electric machine are disclosed. An example brush holder assembly of an electric machine includes a carbon brush including an upper surface and a lower surface opposite the upper surface. The brush holder assembly also includes one or more lead wires extending out of the carbon brush at an insertion point on the upper surface and a first cavity extending into the carbon brush from the upper surface at a location spaced away from the insertion point of the one or more lead wires and unobstructed by the one or more lead wires.
    Type: Grant
    Filed: February 21, 2023
    Date of Patent: April 2, 2024
    Assignee: CUTSFORTH, INC.
    Inventors: Robert S. Cutsforth, Dustin L. Cutsforth, David William Drury Harrison, Douglas Christopher Bruey
  • Publication number: 20230198332
    Abstract: Example brush holder assemblies of an electric machine are disclosed. An example brush holder assembly of an electric machine includes a carbon brush including an upper surface and a lower surface opposite the upper surface. The brush holder assembly also includes one or more lead wires extending out of the carbon brush at an insertion point on the upper surface and a first cavity extending into the carbon brush from the upper surface at a location spaced away from the insertion point of the one or more lead wires and unobstructed by the one or more lead wires.
    Type: Application
    Filed: February 21, 2023
    Publication date: June 22, 2023
    Applicant: CUTSFORTH, INC.
    Inventors: ROBERT S. CUTSFORTH, DUSTIN L. CUTSFORTH, DAVID WILLIAM DRURY HARRISON, DOUGLAS CHRISTOPHER BRUEY
  • Patent number: 11616413
    Abstract: Example brush holder assemblies of an electric machine are disclosed. An example brush holder assembly of an electric machine includes a carbon brush including an upper surface and a lower surface opposite the upper surface. The brush holder assembly also includes one or more lead wires extending out of the carbon brush at an insertion point on the upper surface and a first cavity extending into the carbon brush from the upper surface at a location spaced away from the insertion point of the one or more lead wires and unobstructed by the one or more lead wires.
    Type: Grant
    Filed: May 4, 2022
    Date of Patent: March 28, 2023
    Assignee: CUTSFORTH, INC.
    Inventors: Robert S. Cutsforth, Dustin L. Cutsforth, David William Drury Harrison, Douglas Christopher Bruey
  • Publication number: 20220263376
    Abstract: Example brush holder assemblies of an electric machine are disclosed. An example brush holder assembly of an electric machine includes a carbon brush including an upper surface and a lower surface opposite the upper surface. The brush holder assembly also includes one or more lead wires extending out of the carbon brush at an insertion point on the upper surface and a first cavity extending into the carbon brush from the upper surface at a location spaced away from the insertion point of the one or more lead wires and unobstructed by the one or more lead wires.
    Type: Application
    Filed: May 4, 2022
    Publication date: August 18, 2022
    Applicant: CUTSFORTH, INC.
    Inventors: ROBERT S. CUTSFORTH, DUSTIN L. CUTSFORTH, DAVID WILLIAM DRURY HARRISON, DOUGLAS CHRISTOPHER BRUEY
  • Patent number: 11355991
    Abstract: Example brush holder assemblies of an electric machine are disclosed. An example brush holder assembly of an electric machine includes a carbon brush including an upper surface and a lower surface opposite the upper surface. The brush holder assembly also includes one or more lead wires extending out of the carbon brush at an insertion point on the upper surface and a first cavity extending into the carbon brush from the upper surface at a location spaced away from the insertion point of the one or more lead wires and unobstructed by the one or more lead wires.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: June 7, 2022
    Assignee: CUTSFORTH, INC.
    Inventors: Robert S. Cutsforth, Dustin L. Cutsforth, David William Drury Harrison, Douglas Christopher Bruey
  • Publication number: 20220077641
    Abstract: A system for monitoring the wear state of a carbon brush of a brush holder assembly in which the length of the carbon brush is diminished from an initial length as an end of the carbon brush wears away during use. The system includes a wear state monitor, including a sensor, coupled to the carbon brush. The wear state monitor is configured to rotate as the length of the carbon brush diminishes. The sensor is configured to measure an angular displacement of the wear state monitor as the wear state monitor rotates. The measured angular displacement of the wear state monitor correlates to an amount of diminution in the length of the carbon brush.
    Type: Application
    Filed: November 18, 2021
    Publication date: March 10, 2022
    Applicant: CUTSFORTH, INC.
    Inventors: ROBERT S. CUTSFORTH, DUSTIN L. CUTSFORTH, DOUGLAS CHRISTOPHER BRUEY, MICHAEL LEE SCHAAF, DAVID WILLIAM DRURY HARRISON
  • Patent number: 11211757
    Abstract: A system for monitoring the wear state of a carbon brush of a brush holder assembly in which the length of the carbon brush is diminished from an initial length as an end of the carbon brush wears away during use. The system includes a wear state monitor, including a sensor, coupled to the carbon brush. The wear state monitor is configured to rotate as the length of the carbon brush diminishes. The sensor is configured to measure an angular displacement of the wear state monitor as the wear state monitor rotates. The measured angular displacement of the wear state monitor correlates to an amount of diminution in the length of the carbon brush.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: December 28, 2021
    Assignee: CUTSFORTH, INC.
    Inventors: Robert S. Cutsforth, Dustin L. Cutsforth, Douglas Christopher Bruey, Michael Lee Schaaf, David William Drury Harrison
  • Patent number: 10925317
    Abstract: An electronic smoking device (210, 310, 410) has two portions (12, 13) wherein one of the portions (12, 13) comprises a cavity (240, 340, 440) for a liquid reservoir (234, 334, 434). The portions (12, 13) can be moved with respect to each other, by a movement and a respective counter movement, at least between an insertion configuration and a closed cavity configuration. In the insertion configuration a liquid reservoir (234, 334, 434) can be inserted into the cavity (340, 440). In a closed cavity configuration, the cavity (240, 340, 440) is closed by the other portion and a liquid reservoir opening element (70) of said one or the other portion opens the housed liquid reservoir (234, 334, 434).
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: February 23, 2021
    Assignee: Fontem Holdings 1 B.V.
    Inventors: Simon James Smith, David William Drury Harrison, Alexander Edward Muir, Hitesh Bagai
  • Publication number: 20200112223
    Abstract: Example brush holder assemblies of an electric machine are disclosed. An example brush holder assembly of an electric machine includes a carbon brush including an upper surface and a lower surface opposite the upper surface. The brush holder assembly also includes one or more lead wires extending out of the carbon brush at an insertion point on the upper surface and a first cavity extending into the carbon brush from the upper surface at a location spaced away from the insertion point of the one or more lead wires and unobstructed by the one or more lead wires.
    Type: Application
    Filed: October 3, 2019
    Publication date: April 9, 2020
    Applicant: CUTSFORTH, INC.
    Inventors: ROBERT S. CUTSFORTH, DUSTIN L. CUTSFORTH, DAVID WILLIAM DRURY HARRISON, DOUGLAS CHRISTOPHER BRUEY
  • Publication number: 20200112133
    Abstract: A system for monitoring the wear state of a carbon brush of a brush holder assembly in which the length of the carbon brush is diminished from an initial length as an end of the carbon brush wears away during use. The system includes a wear state monitor, including a sensor, coupled to the carbon brush. The wear state monitor is configured to rotate as the length of the carbon brush diminishes. The sensor is configured to measure an angular displacement of the wear state monitor as the wear state monitor rotates. The measured angular displacement of the wear state monitor correlates to an amount of diminution in the length of the carbon brush.
    Type: Application
    Filed: October 3, 2019
    Publication date: April 9, 2020
    Applicant: CUTSFORTH, INC.
    Inventors: ROBERT S. CUTSFORTH, DUSTIN L. CUTSFORTH, DOUGLAS CHRISTOPHER BRUEY, MICHAEL LEE SCHAAF, DAVID WILLIAM DRURY HARRISON
  • Publication number: 20180368475
    Abstract: An electronic smoking device (210, 310, 410) has two portions (12, 13) wherein one of the portions (12, 13) comprises a cavity (240, 340, 440) for a liquid reservoir (234, 334, 434). The portions (12, 13) can be moved with respect to each other, by a movement and a respective counter movement, at least between an insertion configuration and a closed cavity configuration. In the insertion configuration a liquid reservoir (234, 334, 434) can be inserted into the cavity (340, 440). In a closed cavity configuration, the cavity (240, 340, 440) is closed by the other portion and a liquid reservoir opening element (70) of said one or the other portion opens the housed liquid reservoir (234, 334, 434).
    Type: Application
    Filed: November 10, 2016
    Publication date: December 27, 2018
    Inventors: Simon James Smith, David William Drury Harrison, Alexander Edward Muir, Hitesh Bagai