Patents by Inventor Rex V. Plumb

Rex V. Plumb 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).

  • Bulk cargo unloader aerator
    Patent number: 3933280
    Abstract: Apparatus for aerating and assisting the discharge of pulverulent or finely divided dry cargo such as bulk Portland cement comprises a discharge hopper with a sloping bottom having a port in its sloping wall and a cylindrical aerating assembly insertable and removable through the port and consisting of an apertured tube into which air is fed under pressure and which is covered by a fabric sleeve.
    Type: Grant
    Filed: April 11, 1974
    Date of Patent: January 20, 1976
    Assignee: Fruehauf Corporation
    Inventor: Rex V. Plumb