Patents by Inventor Andre van Dreumel

Andre van Dreumel 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).

  • Fire-resistant passage for lines
    Patent number: 6256948
    Abstract: Fire-resistant passage for one or more lines, such as cables or tubes, in a wall, including an opening in the wall, one or more lines extending through the opening from the one side of the wall to the other side thereof, and a number of profile sections made from material which expands under the influence of heat, which profile sections are situated adjacent to the lines in order to support them and to occupy the surface of the opening present adjacent to the lines, the profile sections having such a shape that radially they freely abut the lines concerned.
    Type: Grant
    Filed: October 14, 1999
    Date of Patent: July 10, 2001
    Inventor: André Van Dreumel
  • Fire preventing duct for passing cables and pipes through walls and bulkheads
    Patent number: D428325
    Type: Grant
    Filed: September 9, 1998
    Date of Patent: July 18, 2000
    Inventors: Andre van Dreumel, Dagfinn Nilsen