Patents by Inventor Eugene D. Schmidgall

Eugene D. Schmidgall 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).

  • Molding forms for making precast portal assembly sections for culverts
    Patent number: 4673159
    Abstract: Molding forms for precast concrete portal assemblies are described. The molding forms include adjustable form surfaces for precasting different shaped portal assemblies from the same basic mold. The molding forms herein are particularly designed for molding portal assemblies for use at either or both end of box culverts which provide passages extending under a longitudinal embankment at skew angles rather than transversely perpendicular to the embankment access.
    Type: Grant
    Filed: October 18, 1984
    Date of Patent: June 16, 1987
    Assignee: Hancock Concrete Products Co., Inc.
    Inventor: Eugene D. Schmidgall