Patents by Inventor Jan E. Vadseth

Jan E. Vadseth 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: 4910649
    Abstract: The invention relates to an airfield light, principally for marking aircraft parking lots, routes for ground staff, etc. It should be readily visible from all sides and from any angle, even in the poorest environmental conditions and from a relatively long distance. It consists of a light source which is arranged in a housing and radiates light in a hemisphere through at least one lens installed in the housing, the light beam (1) in the zenith of the hemisphere having a luminous intensity which is at least 20 percent higher than in the region (13) between 10 and 30 degrees above the lowermost radiant edge (2).
    Type: Grant
    Filed: March 16, 1988
    Date of Patent: March 20, 1990
    Assignee: Meta-Fer AG
    Inventor: Jan E. Vadseth
  • Patent number: 4862335
    Abstract: The invention relates to a closure system for two container parts to be connected to one another, for example for a lighting unit, which system can be mounted rapidly, is corrosion resistant, provides a tightness which can be monitored, and can be removed rapidly at any time and mounted again. According to the invention, the opening line (1) between the container parts is surrounded by a shrink sleeve (2) and may additionally be provided with a layer of sealing compound (4), preferably a hotmelt adhesive.
    Type: Grant
    Filed: March 16, 1988
    Date of Patent: August 29, 1989
    Assignee: Meta-Fer Holding S.A.
    Inventor: Jan E. Vadseth
  • Patent number: 4860182
    Abstract: The invention relates to a lighting unit for installation in a plane, in particular for airports, with the object of radiating light in an optimum manner in two opposite directions in an energy-saving way and with a minimum of electric power. It should be compact and its function should not be adversely affected during rough operations by snow-clearing equipment or the like; it has the following features; Flat prism grating (1,2) are inserted horizontally in orifices of a flat prism holder (5) having an upward sloping upper surface; a light source (3) is arranged under each prism grating.
    Type: Grant
    Filed: March 16, 1988
    Date of Patent: August 22, 1989
    Assignee: Meta-Fer Holding S.A.
    Inventor: Jan E. Vadseth