Patents Assigned to Matthew H. Bertelsen
  • Computer environment filter apparatus having wing with internal baffles
    Patent number: 4690042
    Abstract: A hollow wing and duct for passing air containing contaminants from the top discharge opening of a high speed paper-handling machine in a computer room, such as a laser printer, and delivering the air to a filtering media which filters the air for recirculation in the computer room. The wing has an internal baffle arrangement which improves air flow through the wing.
    Type: Grant
    Filed: May 27, 1986
    Date of Patent: September 1, 1987
    Assignee: Matthew H. Bertelsen
    Inventors: Matthew H. Bertelsen, Gary Klapperich