Patents Assigned to Marjorie L. Trigg
  • Insulated air diffuser
    Patent number: 5658196
    Abstract: An air duct diffuser is shown for attachment to a ceiling grid. The diffuser includes a frame which mounts to the ceiling grid and a louvre which mounts to the frame for directing diffused air within an associated air space. A pre-formed, composite housing of insulating material mounts to the frame and has punch-out duct openings of varying sizes provided therein.
    Type: Grant
    Filed: November 9, 1995
    Date of Patent: August 19, 1997
    Assignee: Marjorie L. Trigg
    Inventor: Danny L. Swaim