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| Number | Title | Issue Date |
| 8056552 | Wall thimble with outside air inlet A wall thimble for use with a heating appliance. Dual functionality is provided in a single wall thimble device by having a vent path for exhausting combustion by-products, and a separate air inlet path to draw in outside combustion air for use by the heating applia... | 11/15/2011 |
| 8011359 | Auxiliary smoke arresting unit Smoke escaping from an outdoor wood burning furnace may be effectively arrested with a smoke arresting unit. By mounting a smoke gathering manifold above the furnace door operatively connected to a vacuum source for drawing smoke discharging from the furnace chamber... | 09/06/2011 |
| 7874287 | Air intake apparatus The air intake apparatus provides for additional auxiliary air to a wood or pellet burning stove. The apparatus is provided in more than one embodiment for fit to more than one type of stove. The curved T-handle controls the damper sleeve for dampened control of the... | 01/25/2011 |
| 7784458 | Modular flue adapter system and method A modular flue adapter system and method is described to accommodate a conduit for exhaust between a firebox and a firebox flue, wherein the firebox is inserted into a firebox opening, by providing an offset distance and/or direction between the exhaust of the fireb... | 08/31/2010 |
| 7665457 | Wall thimble with outside air inlet An improved wall thimble is useful as part of a venting apparatus for a direct vent heating appliance. Dual functionality is provided in a single wall thimble device by having a vent path for exhausting combustion by-products, and a separate air inlet path to draw i... | 02/23/2010 |
| 7644711 | Spark arrestor and airflow control assembly for a portable cooking or heating device A device for arresting spark and ash issuing from, and precisely controlling the ventilation of and temperature inside, a heat source-containing vessel such as a cooking grill, stove, oven, cooker, fireplace, heater, or firebox. The device comprises a spark arrestor... | 01/12/2010 |
| 7373937 | Draft control system and method for heating systems A draft control system and method can provide for automated control of the air drafting for heating systems. In accordance with an exemplary embodiment, an exemplary draft control system comprises at least one draft plate and a draft plate control system. Draft plat... | 05/20/2008 |
| 7178521 | Adjustable length breathing circuit A unilimb breathing circuit has a proximal end coupling member, a distal end coupling member, an expiratory tube extending between the proximal and distal end coupling members, and an inspiratory tube extending between the proximal and distal end coupling members. T... | 02/20/2007 |
| 7052271 | Draft inducer system A draft inducer system has a voltage reducer capable of converting an input AC voltage to a reduced voltage, and an inducer unit capable of being coupled with the voltage reducer. The voltage reducer includes a reducer housing, a set of prongs extending from the red... | 05/30/2006 |
| 6772753 | Adjustable orifice plate for exhaust ducts An exhaust duct orifice adjustment device for a gas-fired heater used to indirectly heat an oven communicating with a heat exchanger, wherein the exhaust duct includes a fixed annular orifice plate and a switch having a pressure sensor on opposed sides of the fixed ... | 08/10/2004 |
| 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 |
| 6761559 | Gas-exhausting module structure suited for a continuous type oven A gas-exhausting module structure includes a casing having a first open end and a second open end. An air-exhausting channel is defined within the casing. The air-exhausting channel has an upper opening that is lower than the second open end of the casing. A blower ... | 07/13/2004 |
| 6622660 | Blower mixing tee An exhaust system for withdrawing a supply of exhaust gases from an exhaust flue of a heater and expelling the exhaust gases to atmosphere at a remote location that includes a mixing tee for mixing a flow of dilution air and a flow of exhaust gases. The m... | 09/23/2003 |
| 6394008 | Splitter plate arrangement for a flue gas stack A splitter plate arrangement is provided for controlling the flow of flue gas in a vertical stack. The splitter plate arrangement 100 is operable to control the flow of flue gas in a vertical stack 128 having an annular entry 130 communicated with two inl... | 05/28/2002 |
| 6234163 | Flue ducting for atmospheric boilers A flue ducting for atmospheric boilers is disclosed and comprises two coaxial generally tubular ducts 10, 11, and a generally undulating linear spacer 12 between said ducts. Linear features are provided on the mutually facing surfaces of the ducts, the fe... | 05/22/2001 |
| 6227191 | Method and apparatus for adjusting airflow in draft inducer A bypass hole is cut into a collector box cover to reduce the efficiency of a draft inducer fan when the fan is used with a furnace containing fewer burner-heat exchanger cells than the fan is optimally suited for. Thus the same inducer fan can be used fo... | 05/08/2001 |
| 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 |
| 6182654 | Woodstove emission controller A woodstove emission controller for conveniently drawing emissions from the wood-stove so that the emissions do not enter the room where the wood-stove is located. The woodstove emission controller includes a tubular member having an inlet end, an outlet ... | 02/06/2001 |
| 6145500 | Heating device The heating device has a housing and a liquid containing compartment defined inside the housing. A heating chamber is disposed inside the housing and the compartment. A fire chamber is disposed inside the heating chamber that produces hot combustion gases... | 11/14/2000 |
| 6112741 | Mid-efficiency furnace with multiple venting option A multi-category gaseous fuel-fired heating apparatus having a combustion chamber, a mixing chamber in fluid communication with the combustion chamber, and an induced draft blower in fluid communication with the mixing chamber whereby combustion air is dr... | 09/05/2000 |
| 6053163 | Stove pipe thermoelectric generator A stovepipe thermoelectric generator. The unit fits in a stovepipe of a coal or wood stove. At least one thermoelectric module is sandwiched between a hot side fin unit with fins extending into the flow of exhaust gases and a cold side fin unit with fins ... | 04/25/2000 |
| 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 |
| 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 |
| 6000391 | Positive air flow ventilation system A ventilation system for urging flue gases from an exhaust source through an exhaust conduit has an exhaust outlet for venting the gases and an exhaust inlet communicating with the exhaust source. A blower fan is provided for creating a positive air flow ... | 12/14/1999 |
| 5983885 | Natural draft automatic feed pellet stove A natural draft, gravity feed pellet stove. The body of the stove is formed by a vertical section of large diameter pipe, with an air intake pipe extending from the back of the stove to below a combustion grate. Pellet fuel is discharged onto the grate th... | 11/16/1999 |
| 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 |
| 5941230 | Appliance for improved venting A gas appliance, flue assembly, or vent adapter including an adjustable flow regulator which regulates the proportions and volume of dilution air and combustion products into the vent is disclosed. The flow regulator can be adjusted to allow a given appli... | 08/24/1999 |
| 5918589 | Low moisture/closed door broil oven ventilation system An oven having a ventilation system capable of providing reduced temperature, low moisture exhaust air is provided. The oven has an oven cavity defined by a partition having a through hole and enclosed by an oven door having an air inlet to accept incomin... | 07/06/1999 |
| 5732692 | Vent damper An integral vent damper/hood apparatus for regulating draft in a flue of a hot water heater includes a damper support having a hemispherical dome, a congruent cylindrical portion with a plurality of openings therein for passage of flue gas therethrough, a... | 03/31/1998 |
| 5680856 | Discharge structure for closed gas appliances Modular discharge structure for closed gas appliances having an inner end and an outer end, comprising: an outer tubular casing; an inner gas exhaust pipe, being placed inside the casing to define an annular supply line for combustion air therewith; a com... | 10/28/1997 |
| 5669374 | Direct vent fireplace A direct vent gas fireplace is provided with a heat shield forming a combustion air expansion and distribution chamber covering a substantial portion of the upper surface of the firebox enclosure and having a circular combustion air inlet opening in its u... | 09/23/1997 |
| 5505190 | Barbecue grill A domestic barbecue grill is shown that has an exhaust manifold and smokestack in combination therewith that is operative to eliminate visible smoke particles and other combustible pollutants in the exhaust gasses that might otherwise flow freely from the... | 04/09/1996 |
| 5482028 | Modular fireplace insert with movable manifold A fireplace insert for a fireplace cavity formed in a building with a fresh air inlet and a combustion gas outlet. The insert includes an enclosure dimensioned to be insertable within the fireplace cavity to define a combustion chamber for generating heat... | 01/09/1996 |
| 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 |
| 5419307 | Draft hood assembly A draft hood assembly and method are provided for installation of a gas fireplace insert to the flue pipe of a fireplace chimney. The insert is for connection between a gas fireplace insert and a chimney flue pipe, the gas fireplace insert having an expli... | 05/30/1995 |
| 5413089 | Wood and coal burning stove A solid fuel burning stove includes a firebox having front side and rear walls, a top and a bottom, and a secondary combustion unit formed from high temperature insulative refractive material mounted on the top and rear wall of the firebox. The unit is co... | 05/09/1995 |
| 5413088 | Wood burning heating unit An improved wood burning heating unit which possesses a trapezoidal housing including a fire box portion possessing in a combustion zone a fire brick grid for supporting fuel wood. An air duct extends beneath the fire brick grid, upwardly along a back por... | 05/09/1995 |
| 5394860 | Method of connecting a heat exchanger to a forced air furnace and related valve A method of connecting a heat exchanger to a forced air furnace is described. Firstly, connect a valve to the hot exhaust gas outlet of a furnace. The valve has a generally "L" shaped valve body. The valve body includes a primary passage. A diversion pass... | 03/07/1995 |
| 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 |
| 5339797 | Fireplace and method for cooling same A fireplace having a bottom wall, inner top wall, two side walls and rear wall defines a combustion chamber having a front opening. An outer top wall is disposed above the inner top wall. The outer top wall and the inner top wall are disposed in spaced ap... | 08/23/1994 |
