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| Number | Title | Issue Date |
| 7380524 | Water heater chamber wrap The present invention relates generally to an insulation wrap for a water heater tank including a strip of nonflammable fibrous material having an opening therein and a fibrous material element outlining at least a portion of that opening. In addition the present in... | 06/03/2008 |
| 7370648 | Water heater system A housing has a top, a bottom and side walls. A liner has a top, a bottom, and side walls. The liner is fabricated of glass. A space is provided between the liner and housing. Insulation material is provided throughout the space. A heating assembly is provided withi... | 05/13/2008 |
| 7299769 | Condensing gas fired water heater A water heater is shown having a closed metal tank with an upwardly mounted combustion chamber and burner/blower assembly. Curved fire tubes convey the products of combustion from the chamber to an exterior mounted flue assembly. The closed tank is enclosed by a rot... | 11/27/2007 |
| 7296349 | Method to assemble a steam generator When constructing a steam generator, buckstay modules are joined with tube wall units to form buckstay and tube wall modules while the boiler steel structure is being erected, and they are temporarily placed within the boiler steel structure level by level. Then an ... | 11/20/2007 |
| 7296542 | Device for introducing hot gas into a heating surface pipe of a waste heat boiler A device for introducing hot gas into a heating surface tube of a waste heat boiler having an outer tube connected to the boiler wall, in particular to the tube plate, has an inner or inlet tube that is connected to the outer tube by a rounded reversing cap to form ... | 11/20/2007 |
| 7284726 | Self extinguishing composite primary structure A helicopter with one or more components formed from a self extinguishing composite primary structure material to provide increased passenger safety. The self extinguishing composite primary structure material has a core formed from a fire retardant material, which ... | 10/23/2007 |
| 7279438 | Coated insulation board or batt An insulation composite for attenuating energy or sound transmission has a body layer of insulating material with a roughly textured face and a uniform thickness solid cover layer permanently embedded in the body layer to a partial depth so that material of the body... | 10/09/2007 |
| 7275503 | Heat transfer tube panel module and method of constructing exhaust heat recovery boiler using the module A method of constructing an exhaust heat recovery boiler. A required number of heat transfer tube group panel modules (20) are produced in an appropriate size according to design specifications of HRSG, where the heat transfer tube group panel modules (20 | 10/02/2007 |
| 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 |
| 7027723 | Water heater electrical enclosure insert/foam dam Electrical components projecting outwardly from the storage tank portion of an electric water heater are shielded from foam insulation material being injected into an insulation space between the tank and an outer jacket portion of the water heater by a hollow, open... | 04/11/2006 |
| 6974634 | Metal felt laminates A finished laminate is provided. The laminate includes an imperforate metal layer having a metallic surface, and a metallic felt layer having a first surface attached to the metallic surface and an exposed second surface facing away from the metallic surface. Also p... | 12/13/2005 |
| 6941899 | Annular foam seal A water heater includes a tank and a jacket surrounding the tank. Between the tank and jacket is defined an annular space in which a seal is positioned. The seal extends between the tank and the jacket and defines a bottom of the annular space. The seal includes a d... | 09/13/2005 |
| 6921564 | Insulation module, system and method for installation and manufacture A pre-formed insulation module is disclosed having a part cylinder body. The body includes an unstriated insulation layer formed of a rigid insulating material substantially uniform in composition and density over its cross section. The insulation layer has an inner... | 07/26/2005 |
| 6917756 | Water heater electrical enclosure insert/foam dam Electrical components projecting outwardly from the storage tank portion of an electric water heater are shielded from foam insulation material being injected into an insulation space between the tank and an outer jacket portion of the water heater by a hollow, open... | 07/12/2005 |
| 6898375 | Water heater electrical enclosure insert/foam dam Electrical components projecting outwardly from the storage tank portion of an electric water heater are shielded from foam insulation material being injected into an insulation space between the tank and an outer jacket portion of the water heater by a hollow, open... | 05/24/2005 |
| 6886500 | Gas fed water-heater The present invention relates to a gas fed water-heater comprising a double wall container (1) inside which a burner (2) and a tank (3) of the water to be heated are arranged. At least in the portion (5′) adjacent to the burner (2 | 05/03/2005 |
| 6880492 | Device for introducing hot gas into a heating surface pipe of a waste heat boiler A device for introducing hot gas into a heating surface pipe of a waste heat boiler includes an outer pipe that is connected to the boiler wall, preferably to the bottom of the pipe. The device also includes an inner pipe or entry pipe that has an admission section ... | 04/19/2005 |
| 6807925 | Explosion-proof hot water heater with unsealed fuel combustion chamber An explosion-proof hot water heater of the type having a gas-fired combustion chamber at a lower end of the inner tank is described. The combustion chamber is an unsealed chamber and has a sealed bottom wall and a fuel burner in the combustion chamber. Combustion ai... | 10/26/2004 |
| 6595431 | Exhaust heat trap and redirecting system An exhaust heat trap and redirecting system for utilizing exhaust heat includes an electric generator including an internal combustion engine. The electric generator is electrically coupled to an electrical system of a dwelling. An exhaust conduit is flui... | 07/22/2003 |
| 6588378 | Water heater bottom pad/foam dam apparatus with integrated tank support members A water heater is provided with a specially designed molded bottom pad/foam dam member formed from a crushable material, such as polystyrene, which is received in a metal bottom pan and has concentric circular grooves formed in its top side to receive cir... | 07/08/2003 |
| 6578531 | Gas appliance with flash suppressor A water heater having a barrier for forming an enclosure around a lower portion of heater. The barrier has an inside wall, an outside wall and a space between the inside and outside walls. There is a skirt disposed within the barrier for slidably receivin... | 06/17/2003 |
| 6575121 | Housing for a hot water system A prefabricated housing for an external hot water system located adjacent a house wall or the like is disclosed which has walling members including two side walls and a front wall, a roof, insulating means for insulating the walling members and the roof, ... | 06/10/2003 |
| 6532907 | Containment jacket A jacket (1) is shaped to enclose at least partially a liquid storage vessel (2; 200), the jacket comprising a skin (5) arranged as a plurality of folds (20) which are capable of opening out to permit expansion of the jacket in the event of liquid escapin... | 03/18/2003 |
| 6439171 | Inner door/burner assembly for fuel-fired water heater An inner combustion chamber access door member for a fuel-fired water heater has main and pilot burner structures respectively supported thereon by gas supply tubes sealingly extending through and anchored to the door member, and is further provided with ... | 08/27/2002 |
| 6412448 | Water heater construction A flexible, water impervious liner is fitted in a rigid outer shell. The shell has an open top with a peripheral flange over which a top lip of the liner is fitted. A separate top plate attaches to the flange with standard fasteners for clamping the liner... | 07/02/2002 |
| 6318304 | Water heater The water heater includes a water tank, a burner below the tank, a casing around the outside surface of the tank and spaced therefrom so as to define a flue path within the casing and along the outside surface of the tank for combustion products. Multiple... | 11/20/2001 |
| 6309209 | Flash suppressor for hot water heater A flash suppressor for surrounding a gas-fired appliance, comprising a barrier for forming an enclosure around a lower portion of the appliance. The barrier has an inside wall, an outside wall and a space between the inside and outside walls. The outside ... | 10/30/2001 |
| 6302062 | Sealed access assembly for water heaters A water heater including a water container; a combustion chamber containing a main burner and a pilot burner positioned to heat water in the water container and having a side wall; a main burner fuel supply line adapted to connect between a fuel control v... | 10/16/2001 |
| 6290490 | Flash suppressor for hot water heater A flash suppressor for surrounding a gas-fired appliance, comprising a barrier for forming an enclosure around a lower portion of the appliance. The barrier has an inside wall, an outside wall and a space between the inside and outside walls. The outside ... | 09/18/2001 |
| 6269779 | Sealed access assembly for water heaters A water heater including a water container; a combustion chamber containing a main burner and a pilot burner positioned to heat water in the water container and having a side wall; a main burner fuel supply line adapted to connect between a fuel control v... | 08/07/2001 |
| 6230665 | Flammable vapor resistant water heater 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 arres... | 05/15/2001 |
| 6182613 | Self-assembly water heater enclosure and kit A water heater enclosure and kit having a box-like configuration, with a top panel, a pair of opposing side panels secured to the top panel at upper ends, front and rear braces which secure the lower ends of the side panels together, and a removable acces... | 02/06/2001 |
| 6029615 | Water heater construction and fabrication method therefor A water heater including a tank, a cylindrical jacket surrounding the tank to provide an insulating space therebetween and a cover member mounted on top of the jacket to close off the top of the insulating space. An insulating wall is provided in the insu... | 02/29/2000 |
| 5979371 | Foam distribution jacket and method of insulating a hot water heater with expandable foam material A foam distribution jacket (10) for containing an insulating expandable liquid foam mixture (44) prior to expansion into a space (17) between a hot water tank (22) and an outer casing (29) secured thereabout. The jacket (10) comprises a pair of sheets (11... | 11/09/1999 |
| 5970923 | Tank structure for hot-water supply unit A tank structure of a hot-water supply unit capable of permitting tap water under a high pressure to be supplied thereto without using any safety mechanism. An inner barrel of a tank body is formed by rounding or bending a flat plate of an increased thick... | 10/26/1999 |
| 5924392 | Bottom pad/foam dam apparatus for water heaters A water heater is provided with a specially designed molded bottom pad/foam dam member which is placed in its bottom pan prior to placing bottom annular portions of the water heater tank and its outwardly spaced jacket structure into the bottom pan. The p... | 07/20/1999 |
| 5899198 | Self clamping temporary foam dam for protecting water heater electrical components A removable dam provides a way to prevent liquid insulation from interfering with electrical components and from squirting out an opening in the jacket of a hot water heater.... | 05/04/1999 |
| 5816200 | Windbox with integral truss support and air admission, fuel admission and ignitor modules A steam generator apparatus which includes an enclosure comprising vertically extending front and back waterwalls joined by opposed spaced first and second waterwalls, The enclosure also includes a plurality of spaced vertically extending windboxes, each ... | 10/06/1998 |
| 5677026 | Self-standing insulating jacket for a hot water tank An inflatable, self-standing, transparent insulating jacket for a hot water tank is disclosed. The jacket is comprised of an inflatable hood, a platform and an attachment means. The hood surrounds, but is spaced outwardly from, the hot water tank. The hoo... | 10/14/1997 |
| 5367605 | Boiler with deformable wall for removing scale A boiler for the production of steam and/or hot water has a principal enclosure limited by a watertight wall for containing water, a bottom water extraction outlet,a water supply inlet, an upper steam outlet and a level detector controlling the water leve... | 11/22/1994 |
