Patents by Inventor Louis E. Brungraber

Louis E. Brungraber 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: 4305706
    Abstract: An elongated unitary refractory member having a horseshoe-shaped configuration is defined by opposing legs, each having a distal section, an interior surface adjacent to and extending between the distal sections, an outer surface and slot-like openings extending radially through the distal sections adjacent the interior surface. An interconnected reticulated metal structure is solidly embedded within the member and positioned adjacent the interior surface. A connecting plate is secured to the metal structure at each distal section and includes tabs in registry with the slots to permit access to the tabs for attachment to a water-cooled pipe or the like which is to be protected in a high temperature heat treating furnace.
    Type: Grant
    Filed: July 25, 1980
    Date of Patent: December 15, 1981
    Assignee: Bloom Engineering Company, Inc.
    Inventor: Louis E. Brungraber