Patents by Inventor William F. Hart, Sr.

William F. Hart, Sr. 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: 4668131
    Abstract: A system for pneumatically conveying a quantity of fluent particulate material from one holding tank or storage vessel to another is disclosed. A mobile frame is employed upon which is disposed an engine for operating a hydraulic pump and a vacuum blower. A material loading container in which an air permeable particle filter is disposed is pivotally connected to an adjustable boom mounted on the frame. The vacuum pump is removably connectable to the container through the filter such that a partial vacuum can be drawn upon the container to induce particulate matter to flow into the latter through a hose connected to a remote source of bulk material.
    Type: Grant
    Filed: February 25, 1985
    Date of Patent: May 26, 1987
    Inventors: William F. Hart, Sr., William F. Hart, Jr.