Patents by Inventor J. Erik Hvide

J. Erik Hvide 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).

  • Seagoing separable tug and barge construction
    Patent number: 4286537
    Abstract: An integrated and separable tug and barge unit of the Catamaran type is provided which constitutes a material improvement in operational efficiency and economy over the separable tug and barge assembly forming the basis of U.S. Pat. No. 3,698,349 granted on Oct. 17, 1972 to John N. Stevens. The tug and barge assembly of the present invention is characterized by providing a materially improved hull design for the twin hulls of the tug unit, both fore and aft, and material design changes with respect to the interfitting of the tug unit with the barge unit which will materially decrease the open area between the twin hulls of the tug unit when the units are in an interfitted relationship.
    Type: Grant
    Filed: January 10, 1979
    Date of Patent: September 1, 1981
    Inventor: J. Erik Hvide