Patents by Inventor William Robin Nell

William Robin Nell 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).

  • Hydraulic compression system for seeder
    Patent number: 6142085
    Abstract: A compression system for a dual material delivery assembly is described. The assembly includes a furrowing element for producing a furrow in the ground as it is towed across the ground. A fertilizer tube and a seed tube are provided for depositing fertilizer and seed at respective location in the ground. A packer wheel follows the tubes for packing earth on top of the seed. A biasing element provides a force on the furrowing element and the packer wheel. A control linkage mounts between the packer wheel and the furrowing element for controlling a distribution of the force between the furrowing element and the packer wheel.
    Type: Grant
    Filed: June 23, 1999
    Date of Patent: November 7, 2000
    Assignee: Vale Farms Ltd.
    Inventors: Kenneth Wayne Drever, James William Halford, Derek Christopher Opseth, William Robin Nell