Patents by Inventor Douglas R. Woodward

Douglas R. Woodward 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).

  • Metering head for a sower
    Patent number: 7594476
    Abstract: A metering head (20) for a sowing machine (22) is provided. The metering head includes a housing (40) and a metering disc (62) rotatably disposed within the housing. The metering disc includes a seed receptacle (78) substantially defining a perimeter of the metering disc and adapted to engage a seed (44) at any random position along the seed receptacle.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: September 29, 2009
    Assignee: Weyerhaeuser NR Company
    Inventors: Ronnie D. Smith, Douglas R. Woodward