| Patent Number |
Title Of Patent |
Date Issued |
| RE37745 |
Control system for a water heater |
June 18, 2002 |
| A multi-function controller for a water heater is advanced comprising a control panel and a plurality of sensors that monitor a variety of functions that impact the operation of a water heater. A flammable gas sensor, placed in proximity to the air intake, detects the presence of an |
| RE37383 |
Pressurized air seal for combustion chamber |
September 18, 2001 |
| Combustion apparatus (10) includes a combustion chamber (12, 212), a cover (24, 208) covering an end wall (14, 210) of the combustion chamber and defining a buffer space (26, 206) therebetween, and a blower (32, 202) external to the cover and supplying air to the buffer space and pre |
| D389905 |
Water heater |
January 27, 1998 |
|
| 7421784 |
Method of manufacturing a water heater with a leak detection system |
September 9, 2008 |
| An original equipment manufacturer water heater including a water tank including an inlet and an outlet, means for heating water in the water tank, a base pan at least partially supporting the water tank such that water leaked from the water tank collects in the base pan, a valve clo |
| 7410672 |
Water-resistant porcelain enamel coatings and method of manufacturing same |
August 12, 2008 |
| A water-resistant porcelain enamel coating and method of making the same is provided. The porcelain enamel coating is prepared using a borosilicate glass frit, and mill additions of silica and a zirconia compound. The mixture is applied to a metal substrate and fired, resulting in a |
| 7372005 |
Water storage device having a powered anode |
May 13, 2008 |
| A water heater having a powered electrode and a method of controlling the water heater. The water heater includes a tank to hold water, a heating element, an electrode, and a control circuit. The control circuit includes a variable voltage supply, a voltage sensor, and a current sens |
| 7354244 |
Blower and method of conveying fluids |
April 8, 2008 |
| A blower for a water heater having a flue defining a flue axis. The blower includes a housing at least partially defining a first chamber and a second chamber and having an inlet opening into the first chamber and an outlet communicating between the second chamber and atmosphere, the inl |
| 7335856 |
Apparatus and method of detecting igniter type |
February 26, 2008 |
| The invention includes an apparatus and method of determining the type of igniter for a burner at each stage of a boiler. The apparatus includes a controller operable to detect whether a first type of igniter or a second type of igniter is installed in the burner based on whether the fir |
| 7316206 |
Water heater with noise attenuation |
January 8, 2008 |
| A water heater comprising a tank defining a water chamber, a water inlet and a water outlet communicating with the water chamber, and a combustion tube extending generally vertically through the water chamber and having an upper end. The water heater also comprises a coil surrounding the |
| 7277627 |
Rooftop water heater |
October 2, 2007 |
| A water heater adapted to be positioned outside of a building and to interface with the plumbing system of the building. The water heater includes a water storage tank adapted to store water outside of the building, a means for heating the water in the tank, a base member supporting |
| 7256372 |
Fluid-heating apparatus, circuit for heating a fluid, and method of operating the same |
August 14, 2007 |
| A fluid-heating apparatus for heating a fluid and method of operating the same. The fluid-heating apparatus includes a heating element for heating a fluid surrounding the heating element and a control circuit connected to the heating element and connectable to a power source. The control |
| 7209651 |
Fluid-heating apparatus, circuit for heating a fluid, and method of operating the same |
April 24, 2007 |
| A fluid-heating apparatus for heating a fluid and method of operating the same. The fluid-heating apparatus includes a heating element for heating a fluid surrounding the heating element and a control circuit connected to the heating element and connectable to a power source. The control |
| 7051683 |
Gas heating device control |
May 30, 2006 |
| A method, and a system using the method, of controlling a heating device. The method includes combusting a mixture of fuel and air in a sealed combustion chamber thereby forming a reaction zone in which the fuel reacts with the air, and also forming outside of the reaction zone an ion |
| 7032543 |
Water heater with pressurized combustion |
April 25, 2006 |
| A water heater includes a sealed combustion chamber and one or more fans for raising pressure in the combustion chamber to increase efficiency of the water heater. The pressure permits a more restrictive baffle to be used in the flue compared to baffles used in atmospheric water heaters. |
| 6948454 |
Airflow apparatus |
September 27, 2005 |
| An apparatus for heating a medium includes a combustion chamber; a burner within the combustion chamber and operable to create products of combustion for heating the medium to be heated; a conduit for the exhaust of the products of combustion; and an airflow apparatus capable of crea |
| 6790481 |
Corrosion-resistant heat exchanger |
September 14, 2004 |
| A corrosion-resistant, copper-finned heat exchanger for a water heater is provided. The heat exchanger includes a conduit through which water runs, heat-transfer fins extending from the conduit and an anti-corrosive coating containing electroless nickel. The heat-transfer fins contain |
| 6745724 |
Water heater having flue damper with airflow apparatus |
June 8, 2004 |
| A water heater includes a water tank adapted to contain water; a flue extending through the water tank and having a first end communicating with the water heater's combustion chamber for the flow of products of combustion through the tank; a damper communicating with the flue; and an |
| 6679014 |
Rooftop water heater |
January 20, 2004 |
| A method and apparatus for mounting a water heater on the roof of a building or at another location outside of the building. A roof curb surrounds a hole in the roof, and a base member is mounted to the roof curb. Alternatively, the base member is mounted on a concrete pad at ground |
| 6658204 |
Door insulator with safety plug |
December 2, 2003 |
| A water heater that includes a tank, an electrical component, and an electrical circuit. The tank defines a water chamber and includes an outer surface. The electrical component is coupled to the outer surface of the tank and extends from the outer surface of the tank. The electrical |
| 6591788 |
Rooftop water heater |
July 15, 2003 |
| A water heater adapted to be mounted on the rooftop of a building includes a substantially cylindrical tank having a horizontally-oriented longitudinal axis. A U-shaped flue tube has a burner end and an exhaust end, both ends being mounted in a head portion of the tank. The legs of t |
| 6557501 |
Water heater having flue damper with airflow apparatus |
May 6, 2003 |
| A water heater includes a water tank adapted to contain water; a flue extending through the water tank and having a first end communicating with the water heater's combustion chamber for the flow of products of combustion through the tank; a damper communicating with the flue; and an |
| 6532906 |
Inlet heat recovery module for water heater |
March 18, 2003 |
| A water heater includes a storage tank communicating with a cold water supply pipe and a hot water supply pipe for the respective supply of cold water to, and removal of hot water from, the tank. The water heater also includes an insulated heat recovery module communicating between the c |
| 6422179 |
Water heater flue system |
July 23, 2002 |
| A water heater includes a water tank, a combustion chamber below the tank and communicating with the flue tube, and a flue system. The flue system includes a flue tube, and V-shaped fins that are metallurgically bonded to the flue tube wall to divide the flue tube into four flue chambers |
| 6303183 |
Anti-microbial porcelain enamel coating |
October 16, 2001 |
| An anti-microbial porcelain enamel coating and a method of preparing the coating is provided. The porcelain enamel coating contains an anti-microbial agent having an anti-microbial metal compound such as silver, zinc, or copper disposed on a particulate support. The resulting porcela |
| 6295952 |
Flammable vapor resistant water heater |
October 2, 2001 |
| A water heater including a water tank, a combustion chamber beneath the tank, a gas burner in the combustion chamber, an air plenum upstream of the combustion chamber, a flame arrestor located such that air in the air plenum passes through the flame arrestor to reach the combustion chamb |
| 6286465 |
Water heater flue system |
September 11, 2001 |
| A water heater includes a water tank, a combustion chamber below the tank and communicating with the flue tube, and a flue system. The flue system includes a flue tube, and a cruciform fin metallurgically bonded to the flue tube wall and dividing the flue tube into four flue chambers |
| 6283067 |
Potable water temperature management system |
September 4, 2001 |
| A potable water temperature management system includes a device that produces waste heat and that has a primary purpose other than heating potable water. The waste heat from the device is used to heat potable water in a tank. A heat shedding system is activated when the temperature o |
| 6269780 |
Water heater heat trap |
August 7, 2001 |
| A water heater includes a spud connected to a tank wall and surrounding an opening in the tank wall. A support surface is provided in the spud, preferably by the tank wall, that supports a heat trap within the spud. A pipe is inserted into the spud and a portion of the heat trap is dispo |
| 6262401 |
Gold-plated water heater element and method of making same |
July 17, 2001 |
| A self-cleaning water heater element is provided. The water heater element is plated with a layer of gold such that the gold surface has a low surface roughness. The smooth gold surface inhibits scale formation on the water heater element. The gold-plated smooth-surfaced water heater ele |
| 6230665 |
Flammable vapor resistant water heater |
May 15, 2001 |
| A water heater including a water tank, a combustion chamber beneath the tank, a gas burner in the combustion chamber, an air plenum upstream of the combustion chamber, a flame arrestor located such that air in the air plenum passes through the flame arrestor to reach the combustion chamb |
| 6216643 |
Flammable vapor resistant water heater |
April 17, 2001 |
| A water heater including a water tank, a combustion chamber beneath the tank, a gas burner in the combustion chamber, an air plenum upstream of the combustion chamber, a flame arrestor located such that air in the air plenum passes through the flame arrestor to reach the combustion chamb |
| 6202935 |
Combined potable water heater and hydronic heating system |
March 20, 2001 |
| A combined potable water heater and hydronic heating system including:a water tank for holding hydronic heating water;a flue extending through the tank;a burner below the flue so that heat and exhaust gases generated by the burner pass through the flue to heat the water in the tank; anda potable |
| 6138614 |
Inlet tube for a water heater |
October 31, 2000 |
| An inlet tube or dip tube for use in a water heater includes a cylindrical tube having near its top end a plurality of outwardly-facing upper openings having a combined upper surface area. The tube also has near its bottom end a plurality of outwardly-facing lower openings having a c |
| 6109216 |
Flammable vapor resistant water heater |
August 29, 2000 |
| A water heater including a water tank, a combustion chamber beneath the tank, a gas burner in the combustion chamber, an air plenum upstream of the combustion chamber, a flame arrestor located such that air in the air plenum passes through the flame arrestor to reach the combustion chamb |
| 6036480 |
Combustion burner for a water heater |
March 14, 2000 |
| A combustion burner includes a housing secured to the top of a water heater, a gas tube in fluid communication with a source of gas and depending vertically from the housing and positioned within a heat exchange tube of the water heater. The An ignition assembly depends vertically fr |
| 5941231 |
Vertical or horizontal vent assembly |
August 24, 1999 |
| 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 mounted in the combustion chamber; a |
| 5891238 |
Curable pigmented silicate compositions |
April 6, 1999 |
| A water-based inorganic coating formulation that contains no lead, and no organic matters, and provides for better control of the viscosity, the stability, the material separation, the homogeneity, and the re-crystallization properties of the formulation. This improved water-based in |
| 5855747 |
Performance enhancing coating for water heater |
January 5, 1999 |
| Coatings are described to improve the performance of cathodic protection systems used in water heater tanks. Semi-permeable sparingly soluble films of silicates and other organic resins protect critical areas of sacrificial anodes from concentrated usage which could sever their tank |
| 5797358 |
Control system for a water heater |
August 25, 1998 |
| A multi-function controller for a water heater is advanced comprising a control panel and a plurality of sensors that monitor a variety of functions that impact the operation of a water heater. A flammable gas sensor, placed in proximity to the air intake, detects the presence of an |
| 5771551 |
Tool for punching and riveting including a combination cylinder |
June 30, 1998 |
| A combination punch and rivet tool, the tool being adapted to be mounted on the end of a robot arm, the tool comprising a C frame having two opposed sides, a punch die mounted on one side of the C frame, an anvil slidably mounted on said one side adjacent the punch die and selectively mo |
| 5735237 |
Hot water storage heater |
April 7, 1998 |
| The present invention is a commercial water heater comprising a tank dimensioned to hold a quantity of water, a blower, a heater, a heat exchanger in the water, and a control system. The heat exchanger includes a central tube running from the top of the tank to the bottom and a coil |
| 5516278 |
Forced draft mixer and burner assembly with pressure distribution device |
May 14, 1996 |
| Combustion apparatus comprising a combustion chamber, a forced draft mixer and burner assembly extending into the combustion chamber, the assembly including a mixing tube having an open end, an opposed closed end, and a generally cylindrical, foraminous side wall extending between the en |
| 5353750 |
Apparatus for sealing a foam insulated water heater |
October 11, 1994 |
| A water heater comprising a tank defining a water chamber and having an outer surface, a spud mounted on the outer surface, a jacket surrounding the tank and having an inner surface spaced from the tank outer surface, an opening aligned with the spud, a margin around the opening and |
| 5347956 |
Water heater with integral mixing valve |
September 20, 1994 |
| A water heater comprising a tank adapted to hold water, a water outlet communicating with the tank, a water inlet communicating with the tank and communicable with the outlet independently of the tank, and a temperature responsive valve in the tank for permitting unrestricted communicati |
| 5341767 |
Combustion air inlet diverter plate for a water heater |
August 30, 1994 |
| A water heater comprising a tank defining a water chamber, a combustion chamber for heating water in the water chamber, and a combustion air inlet pipe including an outlet end communicating with the combustion chamber. The inlet pipe also includes an inlet end having a longitudinal axis, |
| 5299280 |
Wipe entry arrangement for components in a protective dam area of a foam insulated electric wate |
March 29, 1994 |
| An electric water heater tank defines a water chamber having an electrical component extending outwardly of the outer surface of the tank. A spaced outer jacket surrounds the tank and has a opening affording access to the component. A protective dam in the opening bridges the gap between |
| 5293844 |
Protective shield for the electrical components of a water heater |
March 15, 1994 |
| A water heater comprising a tank for holding water, a jacket surrounding the tank, foam insulation between the tank and the jacket, a heating element for heating water in the tank, and a thermostat mounted on the tank for controlling the heating element in response to the temperature of |
| 5265673 |
Compact manifold for a heat exchanger with multiple identical heating tubes |
November 30, 1993 |
| A manifold for a heat exchanger including a plurality of substantially identical heating tubes. The manifold has front and rear walls. The rear wall has therein a plurality of inlet ports, each of which is adapted to be connected to the outlet of one of the heating tubes, the inlet ports |
| 5255665 |
Power vent blower assembly for gas water heater |
October 26, 1993 |
| A water heater comprising a tank defining a water chamber, a combustion chamber located beneath the water chamber, a flue extending through the water chamber, having a lower end communicating with the combustion chamber, and having an upper end, and a power vent blower assembly inclu |
| 5199676 |
Adjustable water heater stand |
April 6, 1993 |
| An adjustable water heater stand including three substantially identical support members each fabricated from sheet metal. The support members each include a central sheet section, an outer leg for supporting the stand and an inner end portion extending at a 60.degree. angle from the she |
