Patents by Inventor Per B. Arnt

Per B. Arnt 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).

  • Localized heating unit for desks
    Patent number: 5214739
    Abstract: A heating unit includes a frame and a substantially flat radiant heating surface supported by the frame. A generally parabolic trough with a reflective inner surface is mounted along one edge of the periphery of the heating surface, and contains an elongate heating element. Further, a reflective flap is hingedly mounted adjacent the trough but remote from the heating surface, disposed so that at least a portion of the radiant energy reflected out of the trough by the reflective inner surface is re-reflected by the flap, depending upon its angulation with respect to the heating surface.
    Type: Grant
    Filed: January 16, 1992
    Date of Patent: May 25, 1993
    Inventors: Thomas M. Nelson, Per B. Arnt