Abstract: A chimney damper is provided with a locking mechanism which prevents the chimney damper from closing in the event of a chimney fire.

Abstract: A chimney cap to selectively cover the outlet from the flue of a chimney which includes an open frame of selected geometric configuration located at the top of the chimney flue around the outlet, a cap to substantially cover the opening defined by the frame, bias device to bias the cap to a position separated by the frame, where a seal is provided to seal the cap and the frame when the cap is located contiguous to the frame. A guide arrangement can be provided to guide the cap toward the frame to selectively locate the seal of the cap and seal surface of the frame. A draw device can be provided to pass through the chimney flue to allow the cap to be drawn to engagement with the frame and a latch can be provided to receive the draw device to hold the cap in engagement with the frame against the bias force.

Abstract: The present invention provides a new and useful arrangement for use in a pivotable chimney dampers of the type including a damper flap to selectively open and close the outlet from the flue of a chimney where the damper flap is pivoted and includes bias means to urge the damper flap to a normally open position with respect to a frame which surrounds the flue when the damper is unrestrained and where a flexible connection is provided 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. An expansible spring means can be attached between the damper flap and the pull means to be pulled to extended position when the damper flap is closed.