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| Number | Title | Issue Date |
| 8156931 | Direct vent cap A vent cap for a direct vent system. The cap may include a base plate and a semicircular outer housing secured to the base plate. A divider is coupled within the outer housing, with the divider forming in exhaust region and an inlet region. A heat shield is position... | 04/17/2012 |
| 7341448 | Gas-fired heating apparatus The gas-fired heating apparatus, especially a water heater, has a combustion chamber (2a); an atmospheric gas burner (5) within the combustion chamber (2a); a combustion gas/air supply system (18) having an intake device ( | 03/11/2008 |
| 7258116 | Bottom venting fireplace system A fireplace having a bottom venting arrangement is disclosed. The fireplace includes a firebox having a burner and a combustion chamber. Fumes produced by burning of gas at the burner are pulled into an upper exhaust plenum in the upper portion of the firebox. The u... | 08/21/2007 |
| 7252503 | Wind-proof venturi tube A venturi tube has a configuration of baffles affixed thereto that serve to greatly reduce the susceptibility of a gas burning appliance to wind gusts. The baffles cooperate to force incoming primary combustion air through a circuitous route before introduction into... | 08/07/2007 |
| 7123259 | Reflection space image based rendering The present invention provides a method, system, and computer program product for reflection space image based rendering of an object at an interactive frame rate. A set of source radiance environment maps associated with a set of source viewing vectors are warped t... | 10/17/2006 |
| 7079388 | Baffles for high capacity air-cooling systems for electronics apparatus An improved air-cooling system for high performance, high density electronic equipment comprises, in one embodiment, a single fan having a radial impeller, a baffle having an inlet portion to efficiently direct air into the fan intake, and a two-tiered outlet plenum... | 07/18/2006 |
| 7074121 | Homogeneous vent cap A vent assembly for use with a vent pipe assembly that includes an intake member defining an intake aperture and an exhaust member defining an exhaust aperture. The vent assembly may include a flow guide positioned adjacent to the intake aperture and configured to d... | 07/11/2006 |
| 7069925 | Pressure relief system for a gas fireplace A pressure relief system for a gas fireplace. The pressure relief system has a flue pipe with an opening in its side. A pressure relief plate is coupled to the flue pipe so that it is movable between an open and a closed state. The pressure relief plate positioned s... | 07/04/2006 |
| 6910477 | Wall mounted vented heater The invention relates to a gas fired vented heater preferably having a relatively thin profile adapted for mounting on or in a wall structure and having a heat radiant display surface with visible decorative refractory defining a rear wall of the combustion chamber.... | 06/28/2005 |
| 6910478 | Direct-vent fireplace configurable for top venting or rear venting A direct-vent, gas fireplace assembly that is configurable into a top venting arrangement and alternately configurable into a rear venting arrangement includes a combustion chamber, an outer enclosure, a vent panel positioned between the combustion chamber and the o... | 06/28/2005 |
| 6863064 | Framed fireplace and method A prefabricated fireplace assembly and method of manufacturing same are disclosed. The assembly is configured for direct mounting to the framework of a rough opening of a building in which it is to be installed. A prefabricated fireplace box having a combustion cham... | 03/08/2005 |
| 6852023 | Liner adaptor for chimneys A chimney liner adaptor is provided to allow air to flow between the outside environment and an annular space in a lined chimney flue. The adaptor may allow an air cooling system to operate but prevents undesirable elements from entering the annular space. The liner... | 02/08/2005 |
| 6776704 | Exterior inlet/exhaust port An integrated exterior inlet/exhaust port for providing two air channels through a wall while only requiring a single hole through the wall. ... | 08/17/2004 |
| 6766796 | Heat exchanger for forced air circulation ovens, particularly for baking food A heat exchanger for forced air circulation ovens, particularly for baking foods, of the type that comprise two chambers, a baking chamber and a heat exchange chamber, between which at least one fan circulates air. The exchanger comprises a burner and, in an upward ... | 07/27/2004 |
| 6647977 | Termination unit for a coaxial flue pipe A termination unit for a through-the-wall horizontal vent of a gas combustion device having a combustion chamber and a burner, is described. The termination unit comprises a wall mounting plate which is secured to a vertical wall outer surface and about a... | 11/18/2003 |
| 6543437 | Drafthood adapter assembly particularly for stoves and fireplaces A drafthood assembly for inclusion within a vent stack for a direct venting stove or fireplace, converting the direct venting stove or fireplace for use with a natural venting flue. The assembly includes an air intake section for feeding ambient room air ... | 04/08/2003 |
| 6488024 | Wood heater A combustion system for burning firewood including a combustion chamber defined by front, rear and side walls, a ceiling and a bottom. An access door is provided for addition of fuel into the combustion chamber. A substantial amount of combustion air ente... | 12/03/2002 |
| 6484712 | Vent cover assembly The present invention is directed toward a vent assembly having a vent structure defining at least one vent aperture. The vent assembly includes a vent cap covering the vent aperture or apertures and a vent cover assembly extending around the vent cap and... | 11/26/2002 |
| 6463926 | Direct vent fireplace with baffled, directional exhaust and vent air column A direct vent gas fireplace has an angled flue pipe that can be directed horizontally out of the back of the fireplace or vertically out of the top of the fireplace, a baffle that conceals an exhaust opening in the back of the fireplace heat chamber from ... | 10/15/2002 |
| 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 |
| 6289886 | Side terminal for direct vent and method of operating same A side terminal for a direct vent operably connected to the outside wall of a structure within which a fireplace is located. The side terminal is configured such that the exhaust duct carrying combustion gases is located a predetermined distance away from... | 09/18/2001 |
| 6216685 | Common venting of water heater and induced draft furnace A common, side-wall, Category III or Category IV-vented gaseous fuel-fired furnace and gaseous fuel-fired water heater system having a gaseous fuel-fired furnace having a furnace combustion products exhaust, a gaseous fuel-fired water heater having a wate... | 04/17/2001 |
| 6216684 | Wood heater A combustion system for burning firewood including a combustion chamber defined by front, rear and side walls, a ceiling and a bottom. An access door is provided for addition of fuel into the combustion chamber. A substantial amount of combustion air ente... | 04/17/2001 |
| 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 |
| 6209535 | Heating apparatus A heating apparatus comprises a combustion chamber, formed of an assembly having a rear wall, two lateral walls, an upper wall and a lower wall. The combustion chamber has at least one outlet for flue gases. The walls forming said combustion chamber are c... | 04/03/2001 |
| 6125839 | Combustion air intake apparatus for fuel-fired, direct vent heating appliance An outside air intake hood for receiving combustion air for delivery to a direct vent, fuel-fired heating appliance such as a water heater has an opposing pair of side inlets positionable to face parallel to an outside wall upon which the hood is mounted,... | 10/03/2000 |
| 6102030 | Furnace vent and intake terminal and blockage safety shut down system A horizontal combined air intake and combustion gas vent terminal assembly is provided having improved wind pressure response and anti-recirculation characteristics. The terminal has a vent conduit disposed inside an air intake conduit. A scoop assembly i... | 08/15/2000 |
| 6053162 | Balanced flue sealed vent terminal assembly The present invention is directed to a sealed vent terminal assembly intended for use in association with high-efficiency oil fired furnaces or boilers. The terminal assembly of the present invention is designed to simultaneously flow outside combustion a... | 04/25/2000 |
| 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 |
| 6044835 | Furnace vent and intake terminal and blockage safety shut down system A horizontal combined air intake and combustion gas vent terminal assembly is provided having improved wind pressure response and anti-recirculation characteristics. The terminal has a vent conduit disposed inside an air intake conduit. A scoop assembly i... | 04/04/2000 |
| 6039041 | Methods of fabricating a vent/intake system for a fuel-fired, direct vent heating appliance A sheet metal colinear-to-coaxial duct transition assembly for a fuel-fired, direct vent heating appliance is fabricated by providing a one-piece rectangular sheet metal plenum box having a rear wall with first and second circular openings therein, and an... | 03/21/2000 |
| 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 |
| 6026800 | Portable heater and cooker system A portable heater and cooker system is provided to apply radiant and conductive heat from a heating component to an enclosure area or a cooking utensil, using a heat generated chimney effect and manual manipulation. In addition, user safety is assured wit... | 02/22/2000 |
| 6019099 | Heat removal system for fireplaces A high efficiency gas fireplace unit having a heat exchanger is located in a room in which the heat from the gas fireplace is not wanted. An air duct is connected to the heat exchanger and has a termination point in a room or area remote from the gas fire... | 02/01/2000 |
| 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 |
| 5997295 | Inlet/exhaust structure for an outdoor furnace An all weather inlet/exhaust structure (32) for an outdoor furnace (10,12,14) includes a generally rectangular upper compartment (40) having an imperforate upper wall (42) and horizontally louvered, vertical side walls (44) along with an imperforate botto... | 12/07/1999 |
| 5947110 | Flue gas flow control The pressure pulsations caused by the flow patterns of flue gases entering a flue gas stack from a horizontal duct are eliminated or reduced by the installation of a partition plate in the stack opposite the inlet duct. This negates the adverse interactio... | 09/07/1999 |
| 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 |
| 5947112 | Prefabricated fireplace exhaust plenum structure A novel wood/gas burning fireplace is provided with an open box shaped outer housing. A combustion chamber is mounted inside said housing having a plurality panels that are juxtaposed the panels of the outer housing so as to provide an open wall at the bo... | 09/07/1999 |
| 5941231 | Vertical or horizontal vent assembly A gas combustion apparatus including a housing having a top wall and a side wall, the top wall and the side wall defining vertical and horizontal openings, respectively, and the housing defining a combustion chamber having an exhaust opening; a burner mou... | 08/24/1999 |
