Patents by Inventor Lyle A. Karis

Lyle A. Karis 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).

  • Dual variable orifice for reinforced preheater
    Patent number: 4050882
    Abstract: Variable dual orifices in the restricted portion of the flue between the kiln and the preheater provides a controlled bypass of 0 to 100% of the kiln gases around the preheater and prevents short circuiting of process materials from the precalciner and mixing chamber to the kiln and provides a means for adjusting the orifice and system pressures to thereby provide stability of operation and control over the entire range of bypass; positive isolation of kiln gases from preheater gases during 100 percent bypass operation is ensured.
    Type: Grant
    Filed: November 4, 1976
    Date of Patent: September 27, 1977
    Assignee: Allis-Chalmers Corporation
    Inventors: Robert F. Kohl, Lyle A. Karis, James L. Shy