Patents by Inventor Robert Hafelfinger

Robert Hafelfinger 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: 6116538
    Abstract: A suspended utility space designed as a captive balloon comprises a carrier balloon which is filled with lifting gas and into which an accessible inner space is incorporated. The carrier balloon is a vertically oriented ellipsoid. The accessible inner space is arranged in the lower part of the carrier balloon. The vertical orientation of the ellipsoidal carrier balloon and the arrangement of the inner space in the lower part of the carrier balloon result in a suspension behavior which is stable under calm conditions. The suspended utility space according to the invention has a larger advertising area visible from the ground and a more effectively utilizable inner space than a spherical airship of comparable size.
    Type: Grant
    Filed: March 11, 1998
    Date of Patent: September 12, 2000
    Inventor: Robert Hafelfinger