Patents by Inventor Burton L. McCampbell

Burton L. McCampbell 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).

  • Lighter-than-air craft
    Patent number: 4773617
    Abstract: A lighter-than-air craft [10] having an outer envelope [11] divided into an inner envelope [25] and a plurality of compartments [40,41,42]. The compartments are filled with lifting gases such as helium and hydrogen and the overall lifting force of the craft is regulated by supplying hot air to the inner envelope.
    Type: Grant
    Filed: March 5, 1987
    Date of Patent: September 27, 1988
    Inventor: Burton L. McCampbell