Patents by Inventor Henning Z. Nielsen

Henning Z. Nielsen 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).

  • Ventilating device for mounting in a plastics foil or a similar flexible material
    Patent number: 5535559
    Abstract: A pipe-shaped ventilating device having a collar for mounting in a plastic foil or a similar flexible material, e.g. a water-tight foil placed on the rafters of a roof construction in order to provide for circulation from the air space under the foil, is formed to be mounted by a spiral movement around the edge of an opening shaped in the foil. The collar is provided with an upper wall and a lower wall, of which the latter is provided with a slit obliquely directed towards the pipe.
    Type: Grant
    Filed: August 18, 1994
    Date of Patent: July 16, 1996
    Assignee: Polysheet A/S
    Inventors: Henning Z. Nielsen, Peter Solbeck