Patents by Inventor Ernest H. Henkel, Sr.

Ernest H. Henkel, 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).

  • Method and apparatus for filling bulk bags
    Patent number: 4703782
    Abstract: A method and apparatus for filling bulk bags employ a filling tube assembly comprising an inner tubular wall having an auger disposed therein for forcing powdered material into a bulk bag and packing it densely therein, and an air-permeable outer tubular wall disposed coaxially about the inner tubular wall to define an exhaust chamber so that air in the material may be drawn inwardly through the outer tubular wall when the filling tube assembly is immersed in the material.
    Type: Grant
    Filed: December 12, 1985
    Date of Patent: November 3, 1987
    Inventor: Ernest H. Henkel, Sr.