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| Number | Title | Issue Date |
| 7168427 | Air filtration and sterilization system for a fireplace An air filtration and sterilization system for removing airborne contaminants from air circulated through an air plenum system of a fireplace. Air filtration systems may include particulate, chemical, and ion filtration systems to filter the air. Air sterilization m... | 01/30/2007 |
| 7082942 | Wood burner with improved emissions A wood burner includes a wrapper. A firebox is positioned in the wrapper that defines a combustion chamber. An air inlet is placed in communication with an external air supply. The air inlet includes a conduit to conduct the external air to the combustion chamber an... | 08/01/2006 |
| 7066170 | Apparatuses and methods for balancing combustion air and exhaust gas for use with a direct-vent heater appliance A combustion air and exhaust gas balancing system for use with a direct-vent heater appliance. The balancing system includes a combustion air valve in fluid communication with a combustion air duct and an exhaust gas valve in fluid communication with an exhaust gas ... | 06/27/2006 |
| 6935333 | Wood burner with improved emissions A wood burner includes a wrapper. A firebox is positioned in the wrapper that defines a combustion chamber. An air inlet is placed in communication with an external air supply. The air inlet includes a conduit to conduct the external air to the combustion chamber an... | 08/30/2005 |
| 6913011 | Tapered grill, smoker and fireplace device A combination grill, smoker and fireplace device having a tapered configuration, where heat, smoke and/or gas upwardly passes through a tapered interior chamber and exits through a vent system. The tapered chamber collectively includes a heat source, a grate, one or... | 07/05/2005 |
| 6543440 | Fireplace assembly A fireplace assembly comprises a smoke chamber and a firebox in fluid communication with the smoke chamber. A masonry casing partially surrounds the firebox, the casing having a pair of spaced-apart side walls which together define an opening to the fireb... | 04/08/2003 |
| 6295981 | Fireplace with vertical or horizontal venting A fireplace adapted for attachment to a flue pipe assembly including an exhaust pipe and a surrounding fresh air pipe is provided. The fireplace comprises an interior housing. The interior housing forms a combustion chamber. The fireplace also comprises a... | 10/02/2001 |
| 6286502 | Fireplace assembly A fireplace assembly comprises a smoke chamber and a firebox in fluid communication with the smoke chamber. A masonry casing partially surrounds the firebox, the casing having a pair of spaced-apart side walls which together define an opening to the fireb... | 09/11/2001 |
| 6050259 | Gas fireplace A direct vent gas fireplace has a combustion air supply duct extending down the back wall, on the outside of the housing back wall. It is connected to the firebox by a duct assembly with a flange that connects to the housing and two ducts that connect to ... | 04/18/2000 |
| 6047695 | Fireplace heat exchanger For use with a fireplace, a heat exchanger mounted across the top portion of the fireplace with the heat exchanger comprising a heat exchanger core with four identical extruded core sections connected together around an inner spin chamber for the passage ... | 04/11/2000 |
| 6029655 | Modular gas fireplace insert A gas fireplace insert for inserting into existing solid fuel fireplaces is made into modules that are separable for installation and can be later assembled together. A housing module which includes a combustion chamber supports a separable module compris... | 02/29/2000 |
| 6003507 | Gas heater having firebox with controllable outside air mixing vent A fireplace has a firebox with a controllable outside air vent to provide a source of cooler air for mixing with and modulating the temperature of the air heated by the fireplace. The air vent is vertically formed between a combustion chamber and a surrou... | 12/21/1999 |
| 5947113 | Direct vent gas appliance with vertical and horizontal venting The invention relates to a direct vent gas fireplace adapted for attachment to a concentric flue pipe assembly having an exhaust pipe and fresh air pipe. A top wall, rear wall, bottom wall and side walls define a combustion chamber. A gas burner is dispos... | 09/07/1999 |
| 5819725 | Aerodynamic device for increasing the flickering of a natural gas flame A process and apparatus for combustion of a gaseous fuel in a fireplace in which a plurality of periodic vortices are created in the airflow pattern of the combustion air prior to its mixing with the gaseous fuel, thereby producing a more natural looking,... | 10/13/1998 |
| 5727540 | Fireplace heat exchanger A system for heating the air in the room containing a fireplace includes a heat exchanger mounted at the top portion of the combustion chamber of the fireplace to extend across the chimney flue opening and a fan for circulating room air through the heat e... | 03/17/1998 |
| 5685290 | Combustion air kit A combustion air kit for providing a source of external air to feed a fire in a firebox is installed during new construction or as a retrofit unit into existing fireplaces. A masonry air vent brick having a hole therein air flow is included in the combust... | 11/11/1997 |
| 5647342 | Gas operated fireplace assembly A gas operated fireplace assembly is comprised of a plurality of modular components, including a casing, firebox, burner module and combustion air-intake module. The casing has an open front and is positionable in an enclosure adjacent a room with the ope... | 07/15/1997 |
| 5647340 | Convertible dual direct-vented fireplace A novel dual direct vented fireplace includes a combustion chamber having two permanent exhaust outlets including a horizontal exhaust outlet and a vertical exhaust outlet. A fireplace enclosure surrounds at least the top, bottom and back of said combusti... | 07/15/1997 |
| 5590641 | Adaptor for installing flue liners to direct vent fireplace inserts A method and adaptor assembly are provided for installing a direct vent firebox, such as a gas fireplace insert, into an existing fireplace. An exhaust flue liner and inlet flue liner are installed in the chimney of the existing fireplace. A plate flue co... | 01/07/1997 |
| 5572986 | Fireplace heat exchanger A system for heating the air in the room containing a fireplace includes a heat exchanger mounted at the top portion of the combustion chamber of the fireplace to extend across the chimney flue opening and a fan for circulating room air through the heat e... | 11/12/1996 |
| 5553604 | Space heating system, heater, and combustion chamber The space heating system has a stove (1, 2) with a sealed combustion chamber (3); air is heated in the stove in a heat exchanger (12) therein, and heated air is conducted through hollow blocks (80) of chamotte arranged, for example, as heating panels, hea... | 09/10/1996 |
| 5542407 | Fireplace assembly A fireplace assembly of the type used as a room air heater comprises a second pane of glass in front of and spaced from the glass pane forming the front of the combustion chamber. The two panes form an air passageway for delivering intake air from an uppe... | 08/06/1996 |
| 5479916 | Low profile gas burner fireplace table A low profile gas burner fireplace is provided for mounting under a low table top or counter. The fireplace system comprises a decorative insulated table top mounted on the top wall of a low profile fireplace. The fireplace is provided with a hot exhaust ... | 01/02/1996 |
| 5320086 | Direct vent gas appliance with vertical and horizontal venting The invention relates to a direct vent gas fireplace adapted for attachment to a concentric flue pipe assembly having an exhaust pipe and fresh air pipe. A top wall, rear wall, bottom wall and side walls define a combustion chamber. A gas burner is dispos... | 06/14/1994 |
| 5313932 | Hood for fireplace A fireplace has a manifold positioned between a combustion chamber and a flue. The manifold has a pair of inlets to supply dilution air to the flue, one extending from a front face of the fireplace, and the other from a rearward location. A baffle extends... | 05/24/1994 |
| 5309891 | Direct evacuation gas heater or fireplace and safety release valve for said heaters A direct ventilation gas fireplace having co-linear air intake pipe and gas outlet pipe. The pipes are separated from each other so that the fluid flowing in one pipe does not come in contact with the other pipe. The gas outlet pipe may comprise a safety ... | 05/10/1994 |
| 5307801 | Zero clearance fireplace A fireplace comprises a firebox which has a flue and front, bottom, top, rear and side panels. An outer casing is spaced from and surrounds the firebox. A combustion air plenum is positioned at a point above the bottom of the firebox and is connected to a... | 05/03/1994 |
| 5284127 | Device for regulating the strength of the flue draught in heating appliances An air guide element is installed between air supply vent and the inside of he door of the heating appliance which consists of an adjustable damper for regulating the supply of secondary combustion air and ballast air in the appliance and in which at least... | 02/08/1994 |
| 5267552 | Direct vent gas fireplace A direct vent gas fireplace has a firebox surrounded by an enclosure. The enclosure has an inclined surface between the top, rear and sides. The surface is inclined at approximately 45 degrees and has an exhaust opening. The firebox has an inclined surfac... | 12/07/1993 |
| 5191877 | Insertable gas conversion unit An insertable gas conversion unit for insertion into existing wood burning fireplaces comprises an insertable gas fireplace conversion unit having a fire box combustion chamber and a gas burner mounted therein. The combustion chamber is covered with a dec... | 03/09/1993 |
| 5076254 | Direct vented multi glass side fireplace A zero clearance fireplace of the type adapted to be installed against an outside wall of an interior space or room to be heated is provided with six walls which comprise four substantially vertical walls, a top wall and a bottom wall at least two of said... | 12/31/1991 |
| 5074284 | Fireplaces of the type with closed hearth and with visible combustion It comprises a hollow base (1) which is connected on the one hand to an evacuation conduit (9), on the other hand to smoke collector tubes (8) which open out upwardly at the apex of a liftable cover (2) with transparent walls. Between this cover (2) and t... | 12/24/1991 |
| 5072719 | Air supply system for a firebox The air supply system for feeding air to a firebox within a building comprises a fresh air intake box (3) in the outside building wall (19) and, in the immediate vicinity of the firebox, a distributor box (7), connected with several pipes (5a, 5b, 5c, 5d)... | 12/17/1991 |
| 5052311 | Zero-clearance firebox A zero-clearance firebox with a much simplified construction enables efficient air exchange directly through one opening in which solid combustible materials are placed. The firebox has a metal inner shell and an outer shell of lighter gage metal incorpor... | 10/01/1991 |
| 5016609 | Direct vented multi glass side fireplace A zero clearance fireplace of the type adapted to be installed against an outside wall of an interior space or room to be heated is provided with six walls which comprise four substantially vertical walls, a top wall and a bottom wall at least two of said... | 05/21/1991 |
| 5014683 | High efficiency fireplace and method of operation A fireplace combustion system in which a sealed firebox contains: a base having apertures connected to a source of combustion air and wherein a hollow grate is connected to one of the apertures to conduct combustion air to a quantity of fuel disposed on t... | 05/14/1991 |
| 4964396 | Fireplace restoration unit The unit restores existing, masonry fireplaces without entailing dismantling of the latter. A heating jacket base, heating jacket, smoke chamber and flue lining are set into the existing firebox, smoke chamber and flue. Ducting is provided to move heating... | 10/23/1990 |
| 4883044 | Fireplace assembly The assembly is adapted for installation as a free standing unit, a fireplace insert or a whole masonry fireplace. It comprises a primary combustion chamber, similar to a traditional fireplace, with the back wall of the primary combustion chamber being a ... | 11/28/1989 |
| 4825849 | Fireplace air supply An outside air supply control apparatus for a fireplace comprising a first cylindrical pipe for connection to an outside air supply, the pipe containing at least one aperture in its wall. A second cylindrical pipe having an inside diameter slightly larger... | 05/02/1989 |
| 4819613 | Inlet vents for fireplaces A fresh air vent for building into the hearth of a fireplace is constructed with the shape and heft of a hearth brick. It has a body and lid of heavy-gauge steel, the body replacing a hearth brick in the hearth, and defining a screened top opening to a tu... | 04/11/1989 |
