Patents by Inventor LaDonne Mitchell

LaDonne Mitchell 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).

  • Patent number: 4930900
    Abstract: A dry material and chemical impregnation unit for mixing the dry material and chemicals separately from a mixing and delivery system prior to delivering the mixture to a delivery unit. The impregnating unit can include a set of rotating mixing blades upon which the material, such as fertilizer and chemicals impinge. The impregnating unit also can include inclined walls upon which the dry materials or a dry and liquid material, such as the fertilizer and chemicals can impinge prior to or after passing through the mixing blades. The impregnating unit further can include a baffle upon which the dry material and chemicals impinge and pass therefrom to further inclined walls forming a restricted opening to turbulently mix the materials and chemicals, with or without the mixing blade.
    Type: Grant
    Filed: February 1, 1988
    Date of Patent: June 5, 1990
    Assignees: LaDonne Mitchell, Larry D. Yargus
    Inventors: LaDonne Mitchell, Larry D. Yargus, Leon W. Volk, William A. Volk