Patents by Inventor George J. Dalsin

George J. Dalsin 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).

  • Cap-type flue damper
    Patent number: 4020754
    Abstract: A cap-type flue damper mountable in the flue opening, the cap position relative to the flue opening being controllable from controls located at the hearth, the damper having a built-in brake which prevents the cap from closing in the event of a malfunction in the spring urging the cap in the open position.
    Type: Grant
    Filed: June 4, 1975
    Date of Patent: May 3, 1977
    Assignee: Bernard L. Dalsin Co.
    Inventors: Bernard L. Dalsin, George J. Dalsin, Lawrence T. Schwaab