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| Number | Title | Issue Date |
| 6772712 | Energy system A low-pressure energy system is provided that includes a combustion chamber immersed in water within an insulated container. Low-pressure air flow is introduced into one end of the combustion chamber. Fuel, sparks and water are also introduced to the combustion cham... | 08/10/2004 |
| 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 |
| 6666172 | Energy system A low-pressure energy system is provided that includes a combustion chamber immersed in water within an insulated container. Low-pressure air flow is introduced into one end of the combustion chamber. Fuel, sparks and water are also introduced to the comb... | 12/23/2003 |
| 6394042 | Gas fired tube and shell heat exchanger A gas fired tube and shell heat exchanger directs a flame directly into an inlet end of the tube bundle and the flame and exhaust are drawn through the tube bundle by an induced draft blower located in the exhaust stream outside of the shell. Liquid to be... | 05/28/2002 |
| 6085701 | Coil tube heater for a used-oil fired furnace A coil tube heater for a multi-oil burner in a used-oil fired furnace utilizing an air to liquid heat exchanger and being fabricated from tubing formed into a tightly coiled cylinder having a plurality of coil loops that are not fixed to any of the adjace... | 07/11/2000 |
| 5816199 | High efficiency water heater A water heater having a vertical tank and a coil pipe located coaxial around the tank with a vertical ring space between them that serves as a ring combustor (bottom portion) and a flue for hot gases (upper portion). Assembly of low pressure (from about 5... | 10/06/1998 |
| 5471956 | Heat-insulating structure for combustion equipment Discloses a heat-insulating structure for combustion equipment of such a type that a burner element of combustion equipment is insertedly disposed at an installation opening of thermal equipment such as a boiler, with a view to simplified structure and en... | 12/05/1995 |
| 5437247 | Drop down corbelling (LAW029) The present invention provides a mechanism device for preventing gas channeling between the sidewall and a heat exchange tube bundle located in the convection section of a horizontal tube fired heater while permitting in-situ repair of the sidewall refrac... | 08/01/1995 |
| 5355843 | Heat transfer mechanism with thin filaments including ceramic high temperature heat exchanger A radiative heat transfer mechanism in a furnace having burners through which pulverized coal and air are burned producing combustion gases and contaminants. A plurality of elongated conduits are positioned inside the furnace proximate to the burners gene... | 10/18/1994 |
| 5313914 | Potable hot water storage vessel and direct-fired heat exchanger The inner surface of a hot water storage vessel is lined with a removable rigid plastic liner layer with injected foam insulation located between the liner and storage vessel. A heat exchanger is mounted through an integral first flange to a second flange... | 05/24/1994 |
| 5109806 | Premix boiler construction A gas boiler having a boiler unit constructed by interconnected boiler sections each having an internal waterway bounded by one or more heat transfer surfaces. Baffles on the boiler sections define serpentine flue passages, and the baffles include bypass ... | 05/05/1992 |
| 4732590 | Flash economizer A flash economizer employing an enclosed upright container has upper, intermediate and lower chambers for flashing pressurized blowdown effluent in the nature of moisture-contaminated steam. It is constructed to initially separate and remove pure steam in... | 03/22/1988 |
| 4382425 | Heat exchanger A hot water boiler, particularly for central heating and hot water supply in small dwellings where an economic unit with an output less than about 0.3 megajoule/hr (30,000 but/hr) is required, has a compact, cylindrical heat exchanger (110) with central c... | 05/10/1983 |
| 4316436 | Heat exchanger A heat exchanger in which the main component is formed of a plurality of elongated strips of rigid heat conductive material. The strips are generally transversely aligned and wound into a coil formation in which each of the surfaces of each strip is dispo... | 02/23/1982 |
| 4301862 | Multiple fluid medium system and improved heat exchanger utilized therein A heat exchanger for a multiple fluid medium solar energy system comprising a plurality of elongated strips of heat conducting material secured together to define a plurality of elongated passageways of uniform cross-section extending parallel to one anot... | 11/24/1981 |
