Patents by Inventor Peter DeFoe

Peter DeFoe 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).

  • Controlling the damping of flues
    Patent number: 4235219
    Abstract: Control method and apparatus, particularly for the damping of flues. A control device employing a latch mechanism operated by a bimetallic strip is used, for example, to operate a damper through a linkage. After being engaged, the latch is set automatically when the level of heating rises above a first prescribed threshold. Thereafter, when the level of heating falls below a second prescribed threshold, the latch acts automatically, for example, through the linkage to close the damper.
    Type: Grant
    Filed: April 2, 1979
    Date of Patent: November 25, 1980
    Inventor: Peter DeFoe