Patents by Inventor Michael Unrein

Michael Unrein 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).

  • Electric assist walk-behind spreader
    Patent number: 12274196
    Abstract: A broadcast spreader broadly comprising a frame, a hopper, an impeller, a set of wheels, and an electric hub motor. The hopper is supported by the frame and configured to hold a particulate material. The impeller is rotatably connected below the hopper and is configured to receive the particulate material from the hopper and spread the particulate material over a surface. The wheels are rotatably connected to the frame for traversing the surface. The electric hub motor is at least partially positioned in one of the wheels and configured to drivably engage the one of the wheels to propel the hopper along the surface.
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: April 15, 2025
    Assignee: Earthway Products Inc
    Inventors: Joe Jimenez, Michael Unrein, John Marshall
  • ELECTRIC ASSIST WALK-BEHIND SPREADER
    Publication number: 20230089286
    Abstract: A broadcast spreader broadly comprising a frame, a hopper, an impeller, a set of wheels, and an electric hub motor. The hopper is supported by the frame and configured to hold a particulate material. The impeller is rotatably connected below the hopper and is configured to receive the particulate material from the hopper and spread the particulate material over a surface. The wheels are rotatably connected to the frame for traversing the surface. The electric hub motor is at least partially positioned in one of the wheels and configured to drivably engage the one of the wheels to propel the hopper along the surface.
    Type: Application
    Filed: September 17, 2021
    Publication date: March 23, 2023
    Inventors: Joe Jimenez, Michael Unrein, John Marshall