Patents Examined by Wiliam F. O'Dea
  • Patent number: 4165679
    Abstract: The present invention provides a new and useful safety arrangement for use in a pivotable chimney damper including a damper flap to selectively open and close the outlet from the flue of a chimney. The damper flap is advantageously pivoted to and includes bias means to urge the damper flap to a normally open position with respect to the frame when unrestrained and carried closure means, which can include flexible pull means to be attached at a first location to the damper flap to pull the damper flap to a closed position against the frame member when the pull means is drawn tight where the pull means can be secured to hold the damper in closed position. An expansible spring means is attached between the damper flap and the pull means to be pulled to extended position when the damper flap is closed.
    Type: Grant
    Filed: August 15, 1977
    Date of Patent: August 28, 1979
    Inventor: Bentford C. Lyemance