Patents by Inventor Douglas E. Metcalf

Douglas E. Metcalf 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).

  • Spreader with removable material transportation mechanism
    Patent number: 10195976
    Abstract: A spreader assembly may include a hopper configured for receiving a spreadable material, a removable cartridge configured for sliding engagement with the hopper and having a material transportation mechanism configured for receiving the spreadable material from the hopper, and a spreader configured for receiving the spreadable material from the material transportation mechanism and spreading the spreadable material onto a target surface. One of the hopper and the cartridge may include a roller having a roller surface, and the other of the hopper and the cartridge may include a bearing surface configured for rolling engagement with the roller surface. The cartridge may have one or more pull bars to facilitate removal of the cartridge from the hopper. Related methods are described.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: February 5, 2019
    Assignee: Alamo Group Inc.
    Inventors: Spencer J. Null, Vladimir Feldman, Douglas E. Metcalf, Robert W. Wood, Randal M. Wolf, Allen T. Joyce
  • Spreader with removable material transportation mechanism
    Patent number: 9931971
    Abstract: A spreader assembly may include a hopper configured for receiving a spreadable material, a removable cartridge configured for sliding engagement with the hopper and having a material transportation mechanism configured for receiving the spreadable material from the hopper, and a spreader configured for receiving the spreadable material from the material transportation mechanism and spreading the spreadable material onto a target surface. One of the hopper and the cartridge may include a roller having a roller surface, and the other of the hopper and the cartridge may include a bearing surface configured for rolling engagement with the roller surface.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: April 3, 2018
    Assignee: Alamo Group Inc.
    Inventors: Spencer J. Null, Vladimir Feldman, Douglas E. Metcalf, Robert W. Wood, Randal M. Wolf