Patents by Inventor Douglas E. Peirce

Douglas E. Peirce 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).

  • Rear suspension assembly
    Patent number: 12325272
    Abstract: A vehicle chassis with a first frame rail and a second frame rail. There is rear suspension with a first leaf spring and a second leaf spring each pivotally connected to the first and second frame rails, respectively. In some embodiments, the rear suspension includes a first shackle assembly connecting the first leaf spring with the first frame rail such that the first shackle straddles the first leaf spring, and a second shackle assembly similarly straddling the second leaf spring.
    Type: Grant
    Filed: March 4, 2024
    Date of Patent: June 10, 2025
    Assignee: The Shyft Group, Inc.
    Inventors: Johann Pieter Eloff, Heinz Hentschel, Douglas E. Peirce
  • Rear Suspension Assembly
    Publication number: 20240294046
    Abstract: A vehicle chassis with a first frame rail and a second frame rail. There is rear suspension with a first leaf spring and a second leaf spring each pivotally connected to the first and second frame rails, respectively. In some embodiments, the rear suspension includes a first shackle assembly connecting the first leaf spring with the first frame rail such that the first shackle straddles the first leaf spring, and a second shackle assembly similarly straddling the second leaf spring.
    Type: Application
    Filed: March 4, 2024
    Publication date: September 5, 2024
    Inventors: Johann Pieter Eloff, Heinz Hentschel, Douglas E. Peirce
  • VEHICLE HAVING ADJUSTMENT MECHANISM
    Publication number: 20210170787
    Abstract: A vehicle includes a vehicle wheel, a vehicle frame and an adjustment mechanism configured to move the vehicle wheel relative to the vehicle frame. The adjustment mechanism includes a cam stud and a cam spacer. The cam stud extends at least partially through the vehicle frame. The cam spacer is rotationally fixed to the cam stud. Rotating the cam spacer moves the vehicle wheel relative to the vehicle frame.
    Type: Application
    Filed: December 10, 2019
    Publication date: June 10, 2021
    Inventors: Jason D. Wharram, Douglas E. Peirce, James N. Settles