Patents by Inventor William D. Freytag

William D. Freytag 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: 5586015
    Abstract: A sports lighting fixture having improved light delivery characteristics includes an elongated bare arc tube, high intensity discharge lamp disposed near the apex of a parabolically shaped reflector member. The reflector is constructed of a non-metallic material and by the orientation and positioning of the lamp within the reflector, an essentially oval shaped light pattern is generated. A light transmissive cover is disposed over the open end of the reflector. When projected onto the playing surface of a sports field, the oval shaped light pattern translates to an essentially circular shaped pattern which allows for a more uniform and efficient overlapping of the multiple light outputs at the playing field level. Louvers can be disposed within the reflector to further redirect any high angle light output into a lower angle which is more useful at the playing surface level.
    Type: Grant
    Filed: June 18, 1993
    Date of Patent: December 17, 1996
    Assignee: General Electric Company
    Inventors: Samuel L. Baldwin, William D. Freytag, Mitchell M. Osteen
  • Patent number: D282106
    Type: Grant
    Filed: May 9, 1983
    Date of Patent: January 7, 1986
    Assignee: Manville Service Corporation
    Inventor: William D. Freytag