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| Number | Title | Issue Date |
| 8113153 | Return temperature stabilizer assembly A return temperature stabilizer assembly or metering means is provided for a boiler that facilitates the mixing of cooler, inlet return fluid with the heated fluid within the boiler chamber whereby the temperature striations within the boiler chamber are reduced or ... | 02/14/2012 |
| 7387721 | Apparatus and system for removing scale causing chemicals in hot water systems Hot water pipes, in areas with hard water, tend to fill with scale until they no longer pass enough water. De-scaling water pipes with acid is dangerous, expensive and damages the pipes. Ion exchange and reverse osmosis water softeners eliminate scale buildup in pip... | 06/17/2008 |
| RE40307 | Inlet baffle for water heater A baffle for slowing the incoming water flow into a booster heating tank so that the turbulence in the water tank is minimized. The baffle consists of an inner cap and outer cap which are positioned over the inlet to a water heating tank. The outer cap is spaced apa... | 05/13/2008 |
| 7360507 | Energy saving apparatus An energy saving apparatus is described. The energy saving apparatus is attached to a standard gas-powered water heater. All gas-powered water heaters typically have an air vent which vents hot air from the water heater. The apparatus takes advantage of this fact by... | 04/22/2008 |
| 7337517 | Method of manufacturing a combustion chamber for a water heater A method of manufacturing a combustion chamber for use in a water heater is provided. A skirt is formed, and an edge portion of a plate is spot welded to the skirt. The edge portion of the plate is circumferentially welded to the skirt, thereby forming a seal betwee... | 03/04/2008 |
| 7266953 | Stacked condensing assembly A condensing assembly for urging condensation of a vapour into a liquid has a vertically stacked modular array of horizontal condensation units exposed to a heat transfer medium. Each condensation unit has a cooling chamber, a plurality of hollow legs and necks acce... | 09/11/2007 |
| 7257320 | Method and apparatus for operating an electric water heater A control system for an electric water heater having an upper heating element and a lower heating element includes a control module that controls operation of the electric water heater by selectively toggling the upper and lower heating elements between an ON state ... | 08/14/2007 |
| 7203418 | Electric water heater with hot water outlet dip tube An electric water heater including a water container; an element associated with the water container to heat water in the water container; a cold water inlet associated with the water container; a hot water outlet associated with the water container; and a dip tube ... | 04/10/2007 |
| 7192271 | Method and cooling device for the subracks in a chamber furnace The invention relates to a ring furnace pit (2) cooling method, comprising the production of a flux F of cooling fluid inside the pit (2) and the flow of at least a part Fr of said flux F in a roughly vertical manner along determined surfaces of the wa... | 03/20/2007 |
| 7165572 | Fluid storage tank with spill containment The present invention provides for above-ground fluid storage tanks having an internal spill containment system. In particular, the present invention is directed to an oil storage tank with a valve and spill containment system, where the valves are kept in a warm an... | 01/23/2007 |
| 7097210 | Method and apparatus for providing a transition connector to introduce outside air and vent flue for boiler combustion A method and apparatus for sealing a combustion intake for a boiler from inside air is provided. A method and apparatus for providing a transition piece for venting fresh air to and combusted gas away from a boiler is also provided. A method of connecting a transiti... | 08/29/2006 |
| 7066729 | Gas powered heat delivery system A gas powered heat delivery system, comprising a fuel gas supply, a catalytic heater connected to the fuel gas supply; a tank containing fluid, the tank being disposed to receive heat from the catalytic heater; a one way conduit having an inlet for receiving fluid f... | 06/27/2006 |
| 7000847 | Quick recovery water heater A small water heater with a 29 cm outer diameter and a total height of 60 cm produces five liters of hot water per minute, with a difference of 25° C. between the water inlet and outlet, and an 85% thermal efficiency; this water heater has a heat recuperator 1 | 02/21/2006 |
| 6920843 | Programmable water heater An apparatus for programmably controlling the operation of a water heater having a programmable timer coupled to the water heater for establishing predetermined times of when the water heater should operate. The programmable controller allows for the operation of a ... | 07/26/2005 |
| 6918194 | Heating configuration for a drier A heating configuration for a drier, particularly for a laundry drier, has a burner with a burner head, a first heating channel with an inlet opening and an outlet opening, and a second heating channel with an inlet opening and an outlet opening. The cross-sectional... | 07/19/2005 |
| 6792896 | Holding tube for a heat treatment plant using injection heating The invention relates to a holding tube for a heat treatment plant using injection heating. The holding tube includes a first, fixed section consisting of a conduit of predetermined and a constant counter pressure valve. The holding tube also includes a second, adju... | 09/21/2004 |
| 6772713 | Method and apparatus for providing and utilizing outside air for boiler combustion A method and apparatus for sealing a combustion intake for a boiler from inside air is provided. A method and apparatus for providing a transition piece for venting fresh air to and combusted air away from a boiler is also provided. A method of connecting a transiti... | 08/10/2004 |
| 6736535 | Method for continuous internal agitation of fluid within hot water heaters or other fluid containing vessels The act of heating water within a contained vessel that is common to most buildings, whether residential or commercial or located in recreational vehicles, mobile homes, aircraft, ships or marine pleasure craft, causes calcium carbonate to precipitate out and settle... | 05/18/2004 |
| 6666173 | Hot gas liquid heater A hot gas water heater has a housing, and at least a pair of concentric coils in the housing through which liquid to be heated is sequentially passed. Each coil has a helical tube with adjacent turns connected by a web member such that the tube and web me... | 12/23/2003 |
| 6588377 | Process and apparatus for recycling water in a hot water supply system A process and apparatus are provided for conserving water and heat energy in a hot water supply system. A holding tank is provided near the Point Of Use to capture unwanted cooled water. An integrated displacement actuator allows this volume to be recircu... | 07/08/2003 |
| 6532906 | Inlet heat recovery module for water heater 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 m... | 03/18/2003 |
| 6516754 | Convective heating system for liquid storage tank A heating system for heating liquids, stored in a tank at low ambient temperature, has a heating chamber with an inlet and an outlet for convectively flowing liquid past a flameless heater. Cold liquid is drawn through an inlet line, from the tank near it... | 02/11/2003 |
| 6510819 | Inlet baffle for water heater A baffle for slowing the incoming water flow into a booster heating tank so that the turbulence in the water tank is minimized. The baffle consists of an inner cap and outer cap which are positioned over the inlet to a water heating tank. The outer cap is... | 01/28/2003 |
| 6415744 | Combustion boiler The present device relates to a combustion boiler having a fan part provided with a driving motor, a suction fan secured on a rotary shaft of the driving motor and disposed on a suction line, for forcedly sucking air in the room or from the outside, and a... | 07/09/2002 |
| 6334411 | High efficiency, glass-lined, combination space and hot water heater A combination space and hot water heater is comprised of an inner tank having an outer casing spaced therebout with insulation being interposed between the casing and the inner tank. The inner tank has a glass-lined inner surface and a heater is provided ... | 01/01/2002 |
| 6116195 | Flame traps for water heaters A gas water heater including a water container adapted to be heated by a gas burner; and an enclosure surrounding the burner, the enclosure having at least one entryway adapted to allow air and fumes to enter the enclosure without igniting flammable gases... | 09/12/2000 |
| 6041742 | Fluid heating and pumping apparatus A fluid heating and pumping apparatus for use with hot fluid space heating systems includes a fluid tank containing heated fluid and a collapsible bladder contained within the fluid tank for absorbing expansion of the fluid within the fluid tank as it is ... | 03/28/2000 |
| 5943984 | Side inlet for a water heater An inlet is provided for delivering water into a water heater through a port in its side. The inlet includes a conduit having a distal portion that extends toward a bottom of the water heater. That portion includes means for deflecting the water flow in o... | 08/31/1999 |
| 5921207 | Automatic flushing system for water tank A system for periodically flushing accumulated sediment from hot water tanks including a drain valve controlled by an electric actuating means capable of rapid actuation of the valve from its normally closed position to a fully open position. The electric... | 07/13/1999 |
| 5787229 | Electric hot water tank with layered storage An electric hot water heater tank is fitted with a plurality of separators that divide the tank into a plurality of chambers surrounding the tank axis and extending between the top and bottom walls. The adjacent chambers communicate alternately in a direc... | 07/28/1998 |
| 5678533 | Hot water heater with separator structure A hot water heater comprises a tank having top and bottom walls and a peripheral wall having an axis, the tank being adapted to contain water at a predetermined pressure above atmospheric pressure. A separator structure is received in the tank between the... | 10/21/1997 |
| 5671771 | Hot water system A hot water plumbing system comprising a water heater, a delivery location, a delivery line delivering water from said heater to said delivery location, a riser located adjacent said delivery location and extending upward above the level of said heater, a... | 09/30/1997 |
| 5438642 | Instantaneous water heater A heater for the rapid heating of water includes a main body having plural vertical upwardly opening chambers, combined with a molded cover plate that can be removably installed over the upper part of the main body. A plurality of combination heating and ... | 08/01/1995 |
| 5365891 | Inlet water turbulator for a water heater An inlet water turbulator body is coaxially secured within the lower end of an inlet water supply dip tube vertically disposed with the storage tank portion of a water heater. A spaced plurality of vertically spiraling passages extend through the turbulat... | 11/22/1994 |
| 5361729 | Water heaters A hot water heater comprises a vessel, a heating means for heating water in the vessel, and a control conduit for diverting cold water from the cold water inlet to the hot water outlet so as to reduce the temperature of the hot water delivered from the ve... | 11/08/1994 |
| 5092279 | Distribution baffle for hot water tank A hot water tank for heating water which includes means for transforming a high velocity jet of incoming cold water at the inlet of the tank to a piston for forcing hot water accumulated in the upper portion of the tank through the outlet, whereby turbule... | 03/03/1992 |
| 5054437 | Storage tank for water heaters and the like with collector outlet dip tube A storage tank having a vertical, cylindrical tank, a fluid inlet, and a fluid outlet, includes a collector outlet dip tube for collecting hot fluid evenly across a horizontal cross section of the tank and thereby foil convection currents that cause mixin... | 10/08/1991 |
| 5006689 | Vacuum insulated storage-type electric water heater having an external bubble pump heating unit A hot water boiling apparatus includes a hot water storage tank. The storage tank has an inner tank storing water therein, an outer tank surrounding the inner tank, and a vacuum heat insulation layer defined between the inner and outer tanks and surroundi... | 04/09/1991 |
| 4964394 | Water heater with heat trap in dip tube A hot water heater (12) has a modified dip tube (70) with a heat trap (80, 78, 82, 74) therein. The cold water inlet pipe (90) is threaded directly into a spud (26) on the tank without an extra fitting (32) otherwise required for a heat trap, the heat tra... | 10/23/1990 |
| 4959526 | Storage type electric water heater having a closed circulation loop with a bubble pump A hot water boiling apparatus includes a hot water tank filled with water. A water supply pipe and a hot water supply pipe are connected to the bottom and top of the tank, respectively. A bubble pump unit is arranged in parallel with the tank. The pump un... | 09/25/1990 |
