Patents by Inventor Niels F. Greve Hansen

Niels F. Greve Hansen 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).

  • Heat protective covering for a pipe and a rod-shaped article, especially for gun barrels
    Patent number: 5062346
    Abstract: The heat protective covering comprises at least two concentric and cylindrical plate layers (6, 7) fixedly mounted round for instance a gun barrel (1). Rows of holes (12, 13, 14, 15) are shaped along and in, respectively, the upper and lower lines of generatrix of each plate layer (6, 7). The heat protective covering ensures that the bore or the central axis of for instance the gun is completely parallel to the line of sight irrespective of wind and weather from one side, such as a strong sunlight, wind or a heavy shower from one side.
    Type: Grant
    Filed: November 21, 1990
    Date of Patent: November 5, 1991
    Assignee: Dansk Industri Syndikat A/S
    Inventors: Niels F. Greve Hansen, Jorn H. Greve Hansen