Patents by Inventor John M. Looft

John M. Looft 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).

  • Multi-Speed Ergonomic Wheelchair And Devices And Methods Therefor
    Publication number: 20220280360
    Abstract: A wheelchair having a frame and a drive wheel coupled to the frame. The drive wheel rotates relative to the frame about a first axis of rotation. A first push rim is coupled to the frame. The first push rim rotates relative to the frame about a second axis of rotation that extends substantially parallel to the first axis of rotation. A second push rim is coupled to the frame. The second push rim rotates relative to the frame about a third axis of rotation that extends substantially parallel to the first axis of rotation. A transmission transmits rotation of each of the first and second push rims to the drive wheel. Movement of the first push rim by a first arc length causes the drive wheel to rotate by a first angular displacement, and movement of the second push rim by the first arc length causes the drive wheel to rotate by a second angular displacement that is greater than the first angular displacement.
    Type: Application
    Filed: March 2, 2022
    Publication date: September 8, 2022
    Inventors: Andrew Hansen, Gregory Owen Voss, Eric Nickel, Gary D. Goldish, John M. Looft