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| Number | Title | Issue Date |
| 7047962 | Air control for a clean burning fireplace An automatic air intake control includes a timing mechanism that regulates the amount of air entering a combustion chamber enclosure during combustion of a fuel. The amount of air is regulated to provide an efficient and clean burn of a solid fuel. The control may i... | 05/23/2006 |
| 6887070 | Fired furnace operation and apparatus A method and apparatus for continuing the operation of a fuel fired furnace when the air supply from the blower to the furnace is interrupted by employing a combination of a ventilator and drop door, the ventilator having a power source independent of the blower. | 05/03/2005 |
| 6880548 | Warm air furnace with premix burner A warm air furnace system has a valve for controlling the flow of fuel, and a mixing component for receiving fuel from the valve and mixing the fuel with air to form an air-fuel premix. The warm air furnace system also has a burner assembly for receiving the air-fue... | 04/19/2005 |
| 6808385 | Furnace sound shield A sound shield is positioned between the burner chamber of a furnace and the portion of the furnace immediately in front of the burner chamber which is typically a removable door. The removable door has slotted vents that allow air to be drawn into the burner chambe... | 10/26/2004 |
| 6776125 | Methods of operating a fuel-fired heating apparatus A gas-fired water heater has a combustion chamber with a bottom wall defined by a perforated flame arrestor plate forming a portion of a flow path through which combustion air may be supplied to a burner structure within the combustion chamber. During firing of the ... | 08/17/2004 |
| 6715451 | Fuel-fired heating appliance with combustion air shutoff system having frangible temperature sensing structure A gas-fired water heater has a combustion chamber with a bottom wall defined by a perforated flame arrestor plate forming a portion of a flow path through which combustion air may be supplied to a burner structure within the combustion chamber. During firing of the ... | 04/06/2004 |
| 6497200 | Fuel-fired heating appliance with combustion chamber temperature-sensing combustion air shutoff system A gas-fired water heater has a combustion chamber with a bottom wall defined by a perforated flame arrestor plate forming a portion of a flow path through which combustion air may be supplied to a burner s structure within the combustion chamber. During f... | 12/24/2002 |
| 6491514 | Furnace burner box assembly with reduced acoustic emissions A burner box assembly for a combustion air furnace includes a back wall, opposed side walls and top and bottom walls defining an interior space for one or more burner nozzles. A combustion air inlet opening is formed in the top wall and is covered by a ge... | 12/10/2002 |
| 6336449 | Solid fuel burner for a heating apparatus A burner system is described for burning granular pellets and similarly sized solid biomass heating fuel, e.g. wood pellets. It includes an air tight fire chamber having an exhaust outlet in an upper region thereof and a burner (10) in the bottom thereof ... | 01/08/2002 |
| 6227194 | Fireplace A gas fireplace is provided having a plenum formed around at least a portion of the fireplace firebox. Room air enters the plenum and is heated by the firebox prior to venting back into the room. Two openings are provided from the outside of the fireplace... | 05/08/2001 |
| 6213117 | Motorized insulated damper assembly for furnace systems A damper unit is provided that is adapted to be positioned in a furnace duct line. The damper unit has a housing which is in communication with a fresh air source and a furnace system. The housing has a damper blade which is moveable between an open posit... | 04/10/2001 |
| 6155160 | Propane detector system An electronic control for a grill, providing enhanced functionality and safety features. A hydrocarbon detector system provides an intermittently operated electro-optic device emitting photons at a wavelength which selective interacts with hydrocarbon as ... | 12/05/2000 |
| 6041771 | Apparatus and method of automatically regulating intake of air into heating unit This invention relates to a novel apparatus and method for automatically and dynamically regulating the intake of air into the combustion chamber of a heating unit such as a wood burning stove, furnace, or fireplace to ensure even and efficient burning of... | 03/28/2000 |
| 6035812 | Combustion air shutoff system for a fuel-fired heating appliance A fuel-fired water heater has a combustion chamber disposed above a wall ucture forming a flow path for combustion air being drawn into the combustion chamber during firing of the fuel burner portion of the water heater. A combustion air shutoff system i... | 03/14/2000 |
| 5988157 | Furnace with split heat exchanger A furnace having improved heat exchanger, which is particularly suitable for use in a positive pressure, direct-vented hot air furnace. The heat exchanger has a split housing construction allowing the heat exchanger to be partible into halves. Parting the... | 11/23/1999 |
| 5893358 | Pellet fuel burner for heating and drying systems A pellet fuel burner includes a compact thermally insulated firebox for providing hot gases to a boiler, furnace or dryer. The apparatus includes a grate that includes a reciprocating arm for removing clinkers and ash from the grate. Pellet fuel feed is p... | 04/13/1999 |
| 5873356 | High efficiency wood pellet stove A wood pellet stove for efficiently burning wood pellets and especially burning pellets at low burns. The stove is accurately controlled by a control panel with a microprocessor which helps safely regulate air flow from a combustion air and exhaust gas fa... | 02/23/1999 |
| 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 |
| 5807098 | Gas heater with alarm system A heater including a housing, a heating assembly having a burner, and at least one of an oxygen level detection assembly adapted to distinguish between a relatively normal oxygen level, a relatively low oxygen level and relatively unsafe oxygen, a carbon ... | 09/15/1998 |
| 5669373 | Thermostatic regulated air flow controller The invention concerns a thermostatic air flow controller. Such flow controllers may be specially useful for controlling the intake of air to a heating stove. The controller has a main air passage with a set of matching register plates which may open or c... | 09/23/1997 |
| 5562089 | Heating with a moving heat sink A high efficiency hot air furnace transfers substantially all of the combustion heat of a clean fuel gas fire to a stream of cool recirculating air by two heat exchangers both of which are mounted in a common plenum through which cool air is recirculated ... | 10/08/1996 |
| 5460162 | Fireplace ventilation system Apparatus for ventilating a fireplace having a combustion chamber within the interior of a building comprising an enclosure defining an air volume and a fan unit for generating a constant negative pressure region within the enclosure. A venting passage co... | 10/24/1995 |
| 5341795 | Inducer for condensing furnace An inducer (40) for causing a flow of combustion air into and gases of combustion through and out of a furnace (10) of the condensing type. The inducer is intended for use, without modification of its design or size, in a series of furnaces of the same ba... | 08/30/1994 |
| 5222476 | Low NOx aspirated burner apparatus A low NOx burner assembly of a fuel-fired heating appliance is supplied with an air/fuel mixture having a substantially less than stoichiometric air-to-fuel ratio. The air-rich mixture is partially combusted to create primary combustion products disposed ... | 06/29/1993 |
| 5139008 | Solid fuel burning stove with secondary air heat exchanger A solid fuel burning stove of the present invention includes an internal combustion chamber, a primary air feed to the combustion chamber and a heat exchanger above and providing a secondary heated air feed to the combustion chamber. This secondary air fe... | 08/18/1992 |
| 5062790 | Burner sound reduction enclosure A furnace having a housing, a combustion chamber within the housing, and a burner associated with the combustion chamber is provided with a sound enclosure housing including a muffler portion. The muffler portion comprises an elongated serpentine passage ... | 11/05/1991 |
| 5056500 | Furnace damper means A furnace comprises a housing, a fan or blower for moving air through housing, a burner in the housing, fuel supply means operatively connected to the burner, a heat exchanger in the housing a combustion chamber, the burner cooperating with said combustio... | 10/15/1991 |
| 5014680 | Self-powered automatic secondary air controllers for woodstoves and small furnaces A controller for automatically regulating the supply of secondary combustion air to woodstoves and small furnaces. The controller includes a movable air valve for controlling the amount of secondary air admitted into the chamber. A self powered means moni... | 05/14/1991 |
| 4941451 | Solid fuel burning heater A heater for the burning of wood or other similar fuels in a fire box. The fire box has a door at the front, there being a primary air inlet to the fire box above the door. The fire box also has a secondary air inlet at the rear and a tertiary inlet at th... | 07/17/1990 |
| 4938283 | Bell orifice plate for inshot combustion furnace A belled orifice inlet plate is provided for an induced draft combustion furnace heat exchanger of the type in which an inshot burner produces a hot gaseous combustion that is injected through an opening in the inlet plate into a combustion zone in the he... | 07/03/1990 |
| 4922889 | Pelletized fuel burning heater A heater for burning combustible pelletized fuel. The pelletized fuel is delivered at a controllable rate to a double-walled burn pot in an enclosed combustion chamber. Combustion air is injected into the combustion chamber at a pressure higher than the a... | 05/08/1990 |
| 4919123 | Filter base for forced air furnace A filter support base for use with an upflow forced air furnace is disclosed. A rectangular base defining a return air plenum is adapted for floor mounting support of the furnace and includes a pass-through opening in communication with the intake opening... | 04/24/1990 |
| 4854298 | Secondary combustion device for woodburning stove An improvement in a woodburning stove of the type including an exhaust flue opening; a combustion chamber for primary combustion, having an access door, a support for wood to be burned and a primary air inlet means for supplying primary air to support pri... | 08/08/1989 |
| 4827901 | Filter base for forced air furnace A filter support base for use with an upflow forced air furnace is disclosed. A rectangular base defining a return air plenum is adapted for floor mounting support of the furnace and includes a pass-through opening in communication with the intake opening... | 05/09/1989 |
| 4794908 | Gas-fired heater means This invention provides improved gas-fired heater means for supplying heat to a space, such as a room, house, building, vehicle, or the like. Basically, the improved gas-fired space heater means comprises: a first duct-like member having opposite front an... | 01/03/1989 |
| 4779795 | Convector room heater incorporating a hot water boiler According to the present invention there is provided a boiler comprising a firebox, a control device controlling the flow of air into the firebox, a water jacket surrounding at least part of the firebox, a sensor to sense the temperature of the water in o... | 10/25/1988 |
| 4777928 | Efficient, pollution free, woodburning furnace A self-contained, free standing, on-demand, woodburning furnace including a firebox (52), including means to force combustion gases through a manifold (68), a hot air gathering plenum and means to selectively force feed the fire (34, 36, 38, 40, 68) and d... | 10/18/1988 |
| 4773385 | Universal energy adaptor increaser This invention is an attachment for installation along a flue duct between a heater and a chimney, including a flue duct section, having a jet tube therein, receiving air from an exterior motor-driven fan, so as to create a vortex and a third stage burner... | 09/27/1988 |
| 4751913 | Apparatus for heating water An apparatus for heating water, especially a hot-water boiler. The apparatus has a combustion chamber and two or more heat exchangers that are disposed one above the other. The heat exchanger disposed in the bottom of the apparatus is associated with a co... | 06/21/1988 |
| 4751910 | Flue gas/combustion air heat exchanger A flue gas/combustion air heat exchanger for a furnace. The furnace includes a combustion chamber that burns a mixture of fuel and combustion air to produce heat for a comfort zone. The resulting products of combustion, along with any waste heat not trans... | 06/21/1988 |
