Patents by Inventor Edward L. Kniss, Jr.

Edward L. Kniss, Jr. 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).

  • Expansion joint
    Patent number: 4030740
    Abstract: An expansion joint for two ducts having incorporated therein means for enabling movement of one of the ducts relative to the other and further including means for preventing substantial lateral movement of the ducts including first and second opposed cylindrical conduits, the first of the opposed conduits being slidably mounted onto an inner sleeve with an outer sleeve extending substantially around and in sliding relation with the first conduit.
    Type: Grant
    Filed: July 1, 1975
    Date of Patent: June 21, 1977
    Assignee: American Air Filter Company, Inc.
    Inventors: Edward L. Kniss, Jr., Dennis L. Hixenbaugh, Jerry A. Maudlin, Nicholas J. Brozenick