Patents by Inventor David John Sturtevant

David John Sturtevant 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).

  • Boat lift assembly
    Patent number: 11970253
    Abstract: A boat lift assembly includes a first base member having a central beam portion and first and second sloped beam portions, and a second base member having a central beam portion and first and second sloped beam portions. The assembly includes a first plurality of roller tubes coupled to the first sloped beam portions of the first and second base members, and a first plurality of rollers disposed on the first plurality of roller tubes. The assembly includes a second plurality of roller tubes coupled to the central beam portions of the first and second base members, and a second plurality of rollers disposed on the second plurality of roller tubes. The assembly includes a third plurality of roller tubes coupled to the second sloped beam portions of the first and second base members, and a third plurality of rollers disposed on the third plurality of roller tubes.
    Type: Grant
    Filed: September 26, 2023
    Date of Patent: April 30, 2024
    Assignee: Great Lakes Lift, Inc.
    Inventor: David John Sturtevant