Patents by Inventor Dale J. Schleppenbach

Dale J. Schleppenbach 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).

  • Secondary shielding structure
    Patent number: 5633508
    Abstract: The present invention provides a method and construction for shielding a source of radiation. The method includes the step of surrounding the source of radiation with a granite wall. The wall provides a interlocking block construction which prevent the blocks from separating. The wall further includes foundation blocks positioned below a ground surface to stabilize the wall. Additionally, the wall includes cap blocks which have sloped top surfaces to deflect rain water.
    Type: Grant
    Filed: October 12, 1995
    Date of Patent: May 27, 1997
    Assignee: Cold Spring Granite Company
    Inventor: Dale J. Schleppenbach