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6868806 |
Vent damper apparatus
A vent damper apparatus provided for limiting flow of ambient air in a flue of a water heater. The apparatus generally includes a base structured to be connected to a water heater, and a damper...
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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...
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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...
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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...
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6012448 |
Fireplace draft regulator
A fireplace downdraft regulator having a first end and a second end, such regulator extending across the top of a fireplace opening, such regulator having an aerodynamic draft header portion having...
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5845632 |
Vent damper including pivot poppet
A vent damper is provided for limiting the flow of ambient air through the central core of a hot water heater having a combustion chamber, the central core forming an exhaust port leading to an...
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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...
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5388566 |
Gas fires
A simulated solid fuel effect gas fire comprising two elongate simulated solid fuel elements in the form of logs, with a partially aerated gas burner arranged in front of and below each log with...
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5368012 |
Wall furnace with side vented draft hood
A wall furnace is disclosed in which a secondary heat exchanger is provided to maximize the heat transfer efficiency of the furnace. The secondary heat exchanger faces the room to be heated but is...
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5347983 |
Draft hood attachment device
A novel draft hood for mounting on top of a gas conversion unit to form an adaptor and coupler between the gas conversion unit and a chimney includes a box structure having a guide flange and a...
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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...
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5239947 |
Vent damper for gas water heater
A vent damper for limiting the flow of ambient air in a hot water heater including a main burner, a pilot light burner and a central core for evacuation of exhaust gases from the main burner and...
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5158069 |
Wind-resistant heating appliance
A wind-resistant heating appliance has a housing with air inlet openings for sustaining combustion generating flue products inside that housing which also has an outlet for flue products. The...
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5062354 |
Side wall vent/air termination unit for boilers
A side wall termination unit for a gas boiler which terminates side by side vent and air supply pipes extending through a building side wall. The pipes extend through inside and outside plates on...
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4978821 |
Reverse flow prevention device for combustion apparatus
A reverse flow prevention device for combustion apparatuses control operated by electrical power, and which is provided with a combustion gas discharge tube for discharging the combustion process...
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4893609 |
Wind-resistant outdoor heating appliance
An outdoor heating appliance includes a top structure having a top surface, a stationary airfoil, and exhaust openings for flue products. The operation of the heating appliance is rendered wind...
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4751912 |
Detection of exhaust gas spillage from naturally aspirated gas furnaces and naturally aspirated gas hot water heaters
A device for detecting the diversion of gas furnace or gas hot water heater exhaust into a dwelling due to chimney backdrafting detects a sustained rise in the temperature of the gases passing...
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RE32671 |
Flue control device
A flue control device for slowing the rate at which heated exhaust gases rise through an exhaust stack comprises a cylindrical housing enclosed by end caps, with an offset inlet and outlet being...
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4690129 |
Terminal unit for a balanced flue
A terminal unit for a balanced flue has an air inlet duct (10) and an outlet duct (20) projecting beyond the mouth of inlet duct. An elliptical plate (30) encloses a region around the outlet duct...
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4613297 |
Vent flow monitor
A monitor for a gas appliance vent includes a conduit section that is mounted in line with a vent leading from a furnace or other gas appliance. The conduit section has an interior tubular plenum...
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4580548 |
Gas-fired heater vent system
A vent system for a gas fired swimming pool heater is disclosed in which replacement of three components is all that is required to change the heater vent to one for use with outdoor installed...
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4442798 |
Vent assembly
A vent assembly adapted for venting into the atmosphere hot burner exhaust gases from the flue exhaust port of a heating appliance within an enclosure, such assembly including an exhaust duct and a...
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4416254 |
Flue structure for domestic heating equipment
Improved flue structure for domestic heating equipment such as a gas fired hot water heater. In conventional gas fired water heaters, the heater is directly connected to a chimney or the like by a...
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4402303 |
Fan flow control device
A flow control device is provided for use with a fan to prevent pressure excursions in a furnace or any other hardware equipment to which the fan is connected. The control device is connected in...
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RE31256 |
Automatic damper means and controls therefor
An automatic damper means and controls, which provide an exceedingly safe automatic damper for the exhaust duct-work of an associated gas furnace or the like, by automatic control of the damper,...
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4373510 |
Venting system for oil or gas-fired appliances
A venting system for the combustion chamber of an oil or gas-fired heating appliance has an elongate diverter box arranged vertically exteriorly of the heating appliance. Such diverter box has an...
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4338913 |
Solid fuel burning stove
A solid fuel burning stove (10) includes a firebox (11) having an insulated bottom chamber in which fuel is burned. The bottom chamber includes an insulated bottom surface (72) and walls (18, 20,...
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4320869 |
Flue gas trap and diverter
An energy conserving device for preventing loss of heat energy from a heater to a chimney by means of a fluid gas heat trap to choke off either chimney draft and/or heated convectional air currents...
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4306539 |
Furnace draft hood with outside air supply
A heater venting system in which a draft hood which connects at its upper end to a chimney, which has an open lower end and which has an opening intermediate its upper and lower ends connected to...
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4292950 |
Gas burner system
A gas burning furnace system is disclosed, including a blower which draws air from outside the home for combustion. The blower forces combustion air to the gas burner via a pressure box situated...
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4278068 |
Posi-draft stabilizer
This invention relates to a device which is installed in series with the smoke stack of an oil burner whereby the configuration of the device provides the means to act as an aerodynamic check valve...
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4270894 |
Combination flue and vent damper
A housing structure with a single pivoted damper member is provided as a replacement for the draft hood associated respectively with the flue outlet and vent pipe inlet in a gas heater system. The...
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4257393 |
Venting system for a fuel-burning heating plant
A venting system for a fuel-burning heating plant, such as a conventional gas-fired furnace. The venting system includes an open-bottomed diverter situated well above the base of the heating plant...
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4203356 |
Baffle for gas heater vents
This invention is an enclosure for the part of a gas heater vent which protrudes on the outside of a wall of the building in which the gas heater is installed. It consists of a sheet metal...
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4187833 |
Venting system for gas-fired heating plants
A venting system for gas fired heating plants including a diverter box, conduit means for conducting gas from one heating plant upwardly in one leg of an inverted U pattern and downwardly into the...
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4118173 |
Unidirectional seal for flow passages
A seal for flow passages has directional characteristics allowing gases or fluids to flow freely in one direction while restricting the flow in the opposite direction. The seal includes a flow...
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4079727 |
Venting system for a gas-fired heating plant
A venting system for the combustion chamber of a gas-fired heating plant has an elongate diverter box arranged vertically of the heating plant exteriorly thereof and having an upper portion and a...
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4050628 |
Heat reclaimer
An apparatus for reclaiming heat from and for controlling the flow of combustion gases passing through a flue from a heater to an exhaust stack. The apparatus includes an inner housing having first...
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4019491 |
No down draft chimney throat
This is a unique and improved throat for chimneys such as chimneys used in connection with fireplaces which features a complete former damper and throat attached to the sides of the chimney hood...
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3994280 |
Horizontal vent air terminal for sealed combustion furnaces
An air terminal for a horizontal vent of a sealed combustion furnace includes a faceplate for mounting to an exterior vertical wall. A horizontal flue pipe extension, receiving the combustion...
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3974757 |
Down-draught deflector-draught interrupter
A down-draught deflector - draught interrupter is described having a tube of circular or rectangular cross-section, an internal baffle element for laterally deflecting down-draught gases and...
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3924605 |
Emission control method and apparatus for smokestacks or other waste gas discharge stacks
The present invention prevents the emission of smoke, vapors or other waste gaseous products from a smokestack, chimney, flue or the like when downdraft winds would be likely to carry the smoke or...
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3800748 |
FLUID HEATER APPLIANCE
A fluid heating appliance of the stackless type particularly adapted for heating swimming pool water. A rectangular housing or cabinet is assembled and contains a combustion chamber, a heat...
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3797477 |
CONVERTIBLE GAS HEATING APPARATUS
A convertible heating appliance is disclosed in which a common boiler unit is adapted to universally receive either a grate vent assembly or a stack assembly. As a result, the boiler unit can be...
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3771320 |
REFRIGERATOR OPERATED BY A FLUID FUEL BURNER FOR A MOVABLE STRUCTURE
Heat-operated refrigeration apparatus has heat dissipating members and a heat receiving part in a space defined in part by an exterior vertical wall of movable structure, such exterior wall having...
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3730673 |
VENT SEAL
A vent seal is provided for use with vent stacks, blow down lines, flare systems and the like to prevent entrainment of air into the stack which comprises a diode interposed in the stack below the...
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3601118 |
DOWNDRAFT SAFETY DEVICE FOR COMBUSTION GAS FLUES
This invention relates to an improvement in a downdraft safety device, e.g., for a gas-heated liquid heater. The device is arranged inside of a cowling provided with lateral outlets, and includes a...
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3601099 |
GAS-HEATED ONCE-THROUGH POSITIVE FLOW WATER HEATERS
A gas water heater has a heater shaft terminating in a fin block. A pair of exhaust hoods are used interchangeably on the water heater. Each of these hoods has a bottom portion fitting the top of...
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3536060 |
DRAFT HOOD
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3361051 |
Vent cap assembly
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