Abstract: A flush-mounted fireplace assembly comprising a surround structure configured to encompass a perimeter of an opening in a mounting wall and a bezel structure configured to fit within the outer surround structure. An inner edge of the surround structure and an outer edge of the bezel structure oppose each other and define a gap between inner edge and outer edge such that air can flow through the gap. An outside major surface of the surround structure and an outside major surface of the bezel structure are substantially co-planar with each other and with an exterior surface of the mounting wall.

Abstract: A method to regulate overfire air passing through an overfire air duct and entering a flue gas stream in a combustion system including: directing overfire air into an inlet of the overfire air duct, passing the overfire air through the duct and discharging the overfire air into the flue gas stream in the combustion system; adjusting a flow rate of overfire air entering the inlet using a damper adjacent the inlet, and moving the damper parallel along an axis of the overfire air duct to increase and decrease the overfire air entering the inlet, wherein the damper has an open position at which the damper is extended out of the inlet and a closed position in which the damper is substantially in the inlet and blocking air entering the inlet.

Abstract: A damper and overfire air duct in a combustion system having a combustion structure defining a flue gas passage, the damper and overfire air duct including: an inlet to the overfire air duct and an outlet to the duct discharging overfire air into the flue gas passage, and the damper aligned with an axis of the overfire air duct, and having an open position axially distal to the inlet and a closed position at least partially in the inlet and duct, wherein the damper is movable axially between the open and closed positions.

Abstract: This invention relates generally to a fireplace having a firebox chamber exhausting upwardly to a chimney, a front opening and fuel positioned in the firebox chamber and more specifically to an easily removable cover apparatus for the upper portion of the front opening whereby air flowing through the front opening will predominately flow through the lower portion of the firebox which increases the air flow onto the fuel.

Abstract: An improved guillotine-type door for a fireplace enclosure. An improved guillotine-type door, characterized by the fact that it opens by rotating around a lower pivoting axis (15), the ends of which are lower fingers (13) for guidance along vertical glides, the said lower fingers receiving the end attachment of the movable connection to the auxiliary mechanical device (31) for maneuvering, and being immobilized in the bottom lower position by a holding device (22), and by the fact that each vertical glide has a device for lateral disengagement at the level of each upper finger (14), for the purpose of allowing the door to be inclined, then pivoted around the lower axis (15). This invention is of interest for manufacturers of fireplace enclosures.

Abstract: A fireplace enclosure consisting of a rectangular-shaped frame formed by spaced pairs of top and bottom and side frame members clamped together by a pair of tie rods, whereby an opening is formed to provide access into the firebox of a fireplace. A pair of bifold doors are movably mounted on the frame for opening and closing the access opening. The doors each include a frame and a pair of safety glass panels held in channels formed in the frame by ribbon spring steel strips. The doors are pivotally removably mounted on spring clips attached to the top and bottom channel members for movement between open and closed positions. Low friction guide rollers are mounted on the door frames and slidably engage the top and bottom frame members and V-shaped spring clips attached thereto to assist in opening and closing the doors and to provide support for the doors. A draft diverter plate may be mounted on the bottom member of the frame to provide drafts to the firebox.

Abstract: A double walled fireplace insert is shown with an inner firebox and an outer shell to provide convection air channels between the parallel walls of the inner and outer units. A front panel is integral with the outer shell, and it covers the front of the insert. This front panel has room air intake vents that open into the said air channels, and warmed air outlet vents that open into the room to be heated by this fireplace. There is a circulating fan positioned within the convection air channels for governing the air movement through the said channels.