Patents by Inventor Frederick M. Untch

Frederick M. Untch 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).

  • Labyrinth articulation joint for regenerative air heater seal frame
    Patent number: 4705098
    Abstract: A labyrinth articulation joint (38) for use in the seal frame (35) of a rotary regenerative air heater (20). An internal labyrinth arrangement of intercooperating tabs (54,55) and slots (44,45) in the two hinges (41,51) of the labyrinth articulation joint (38) present a series of successive right angle turns that increases the pressure drop through the labyrinth articulation joint (38) thus reducing the leakage of air through the labyrinth articulation joint (38), and thereby minimizing erosion of the labyrinth articulation joint (38) due to abrasive particles that would otherwise be carried through the joint by the leakage air.
    Type: Grant
    Filed: May 2, 1986
    Date of Patent: November 10, 1987
    Assignee: The Babcock & Wilcox Company
    Inventors: David W. Gerber, Frederick M. Untch