Patents by Inventor Robert Dunigan

Robert Dunigan 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).

  • Modular fork assembly for a forked material-handling vehicle
    Patent number: 12397836
    Abstract: A modular fork assembly for a pallet truck includes a discrete elongate body, a discrete load wheel module, and a discrete fork tip that may be detachably connected by the same or different types of interlocking mechanisms that are adapted to inhibit sheer forces. The load wheel module includes a frame and a load wheel assembly that includes a load wheel that is operatively connected to the frame.
    Type: Grant
    Filed: June 21, 2022
    Date of Patent: August 26, 2025
    Assignee: Hyster-Yale Materials Handling, Inc.
    Inventors: Andrew White, Robert Dunigan
  • Load wheel module for a forked material-handling vehicle
    Patent number: 12077421
    Abstract: A modular fork assembly for a pallet truck includes a discrete elongate body, a discrete load wheel module, and a discrete fork tip that may be detachably connected by the same or different types of interlocking mechanisms that are adapted to inhibit sheer forces. The load wheel module includes a frame and a load wheel assembly that includes a load wheel that is operatively connected to the frame.
    Type: Grant
    Filed: March 14, 2022
    Date of Patent: September 3, 2024
    Assignee: Hyster-Yale Materials Handling, Inc.
    Inventor: Robert Dunigan
  • MODULAR FORK ASSEMBLY FOR A FORKED MATERIAL-HANDLING VEHICLE
    Publication number: 20220315087
    Abstract: A modular fork assembly for a pallet truck includes a discrete elongate body, a discrete load wheel module, and a discrete fork tip that may be detachably connected by the same or different types of interlocking mechanisms that are adapted to inhibit sheer forces. The load wheel module includes a frame and a load wheel assembly that includes a load wheel that is operatively connected to the frame.
    Type: Application
    Filed: June 21, 2022
    Publication date: October 6, 2022
    Applicant: Hyster-Yale Group, Inc.
    Inventors: Andrew White, Robert Dunigan
  • LOAD WHEEL MODULE FOR A FORKED MATERIAL-HANDLING VEHICLE
    Publication number: 20220194767
    Abstract: A modular fork assembly for a pallet truck includes a discrete elongate body, a discrete load wheel module, and a discrete fork tip that may be detachably connected by the same or different types of interlocking mechanisms that are adapted to inhibit sheer forces. The load wheel module includes a frame and a load wheel assembly that includes a load wheel that is operatively connected to the frame.
    Type: Application
    Filed: March 14, 2022
    Publication date: June 23, 2022
    Applicant: Hyster-Yale Group, Inc.
    Inventor: Robert Dunigan
  • Modular fork assembly for a material-handling vehicle
    Patent number: 11365103
    Abstract: A modular fork assembly for a pallet truck includes a discrete elongate body, a discrete load wheel module, and a discrete fork tip that may be detachably connected by the same or different types of interlocking mechanisms that are adapted to inhibit sheer forces. The load wheel module includes a frame and a load wheel assembly that includes a load wheel that is operatively connected to the frame.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: June 21, 2022
    Assignee: Hyster-Yale Group, Inc.
    Inventor: Robert Dunigan
  • MODULAR FORK ASSEMBLY FOR A MATERIAL-HANDLING VEHICLE
    Publication number: 20200307975
    Abstract: A modular fork assembly for a pallet truck includes a discrete elongate body, a discrete load wheel module, and a discrete fork tip that may be detachably connected by the same or different types of interlocking mechanisms that are adapted to inhibit sheer forces. The load wheel module includes a frame and a load wheel assembly that includes a load wheel that is operatively connected to the frame.
    Type: Application
    Filed: March 27, 2019
    Publication date: October 1, 2020
    Applicant: Hyster-Yale Group, Inc.
    Inventor: Robert Dunigan