Patents by Inventor Helmut Dennig

Helmut Dennig 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: 5305901
    Abstract: A large-scale container, preferably transportable and closable by a fireproof sliding door composed of several leaves, includes a fireproof bulkhead which is mounted parallel to the leaves along the ceiling of the large-scale container. The bulkhead extends over the entire width of the sliding door and projects in a gap defined by the spaced arrangement of the leaves, with the bulkhead and the leaves being provided along their facing sides in the overlapping areas with a fireproof intumescent coating. In this manner, a direct penetration of flames in this area into the interior is prevented and the space defined between the leaves and the bulkhead is closed by a fireproof intumescent coating to attain a hermetic seal.
    Type: Grant
    Filed: September 10, 1992
    Date of Patent: April 26, 1994
    Assignee: P & D Systemtechnik GmbH
    Inventor: Helmut Dennig