Patents by Inventor Dean S. Fairchild

Dean S. Fairchild 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).

  • Fertilizer applicator attachment
    Patent number: 4989784
    Abstract: An attachment for use with a fertilizer distributor apparatus (22). The attachment includes a plurality of plungers (82) comprising an assembly for cleaning entry ports (46) to distributor conduits (48) and for governing which ports (46) fertilizer will be channelled into. A preferred embodiment of the invention comprises two gangs of plungers (82), one gang for entry into ports (46) leading to distributor conduits (48) extending to a boom (62) on one side of a distribution vehicle (20). The other gang of plungers (82) controls entry of fertilizer into and through entry ports (46) opening into distributor conduits (48) leading to the boom (62) on the other side of the vehicle (20).
    Type: Grant
    Filed: June 13, 1989
    Date of Patent: February 5, 1991
    Inventor: Dean S. Fairchild