Patents by Inventor Maurice N. Day

Maurice N. Day 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).

  • Flue restrictor
    Patent number: 4263890
    Abstract: A flue restrictor for installation in the flue piping of a heating system to reduce its effective cross sectional area comprises sheet metal inlet and outlet sections having flanges secured together in a joint that has a guideway in it for a sheet metal gate valve that may be transversely positioned to produce the desired cross-sectional area and riveted in place to provide a substantially tamper-proof assembly.
    Type: Grant
    Filed: September 1, 1978
    Date of Patent: April 28, 1981
    Assignee: Michigan Consolidated Gas Company
    Inventors: John W. Turko, Maurice N. Day, Linda M. Deschere, Howard B. Pritz, Larry E. Schluer, Henry F. Seidel, Sherwood G. Talbert, Earl L. White