Patents by Inventor Thomas J. Sass

Thomas J. Sass 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).

  • Locking and seating means for chimney liners
    Patent number: 4878326
    Abstract: This invention is a flue liner collar designed to secure liners within a masonry chimney. It further comprises a liner interlock comprised of two interconnected metallic bands of identical configuration forming an expansible and contractible collar for the sides of two stacked chimney liners and said bands having inwardly extending flanges for seating the ends of said adjacent liners.
    Type: Grant
    Filed: September 29, 1988
    Date of Patent: November 7, 1989
    Inventor: Thomas J. Sass