Patents by Inventor Frederick Sembler

Frederick Sembler 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: 4917181
    Abstract: A plate-type annular heat exchange cylinder which has increased resistance to cracking under the stress of heat gradients. The invention comprises providing the cylinder in the form of two or more longitudinal segments, such as hemi-cylinders, spaced by axial narrow expansion slots, sealing the spaces between adjacent pairs of the plates of each segment and each expansion slot, uniting the segments by attaching radial coupling plates over the slots at each end of the segments, and blocking the inner peripheral entrance of each axial slot by attaching a narrow gas seal strip thereover.
    Type: Grant
    Filed: August 4, 1988
    Date of Patent: April 17, 1990
    Assignee: Textron Lycoming
    Inventors: John D. Kiernan, Jr., Frederick Sembler