Patents by Inventor Erich Allendorfer

Erich Allendorfer 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: 5492163
    Abstract: The design of sliding shutter boxes for sliding shutters on windows, door openings and the like requires in most cases the off site assembly of the entire mounting. Furthermore, such sliding shutter boxes are often very large and heavy and thus unnecessarily burden the building. The invention therefore provides to use a self-supporting housing of sheet-metal parts, which can be preassembled and can be installed on site together with the drum needed for rolling up the sliding shutter, the sliding shutter itself and other parts.
    Type: Grant
    Filed: May 19, 1994
    Date of Patent: February 20, 1996
    Inventor: Erich Allendorfer