Quotables
"It is my heart-warmed and world-embracing Christmas hope and aspiration that all of us, the high, the low, the rich, the poor, the admired, the despised, the loved, the hated, the civilized, the savage (every man and brother of us all throughout the whole earth), may eventually be gathered together in a heaven of everlasting rest and peace and bliss, except the inventor of the telephone. "
Mark Twain ; Christmas greetings, 1890
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| Number | Title | Issue Date |
| 7172412 | Pyrolysis heater A pyrolysis heater particularly for the cracking of hydrocarbons in the production of olefins has a burner arrangement in the firebox which includes staged combustion low NOx hearth burners firing upwardly in the firebox adjacent to the walls. Wall stabil... | 02/06/2007 |
| 7083829 | Vehicle having atmosphere pollutant treating surface A method and apparatus for treating the atmosphere comprising moving a vehicle through the atmosphere, the vehicle having at least one atmosphere contacting surface and a pollutant treating composition located on said surface. A specific embodiment comprises coating... | 08/01/2006 |
| 7044123 | Highly efficient heat exchanger and combustion chamber assembly for boilers and heated air generators The present invention relates to a heat exchanger and condensation combustion chamber assembly, comprising a plurality of tubes and including a front plate and a rear plate connected to the combustion chamber with a drop pattern. Each of the heat exchanger tu... | 05/16/2006 |
| 6910878 | Oxy-fuel fired process heaters Process heaters operated with a burner that uses high-oxygen oxidant gas instead of air and that recirculates and entrains combustion gases, wherein oxidant gas is injected at an angle to the fuel nozzle. ... | 06/28/2005 |
| 6887070 | Fired furnace operation and apparatus A method and apparatus for continuing the operation of a fuel fired furnace when the air supply from the blower to the furnace is interrupted by employing a combination of a ventilator and drop door, the ventilator having a power source independent of the blower. | 05/03/2005 |
| 6494255 | Air heater gas inlet plenum A modified air heater gas inlet plenum for a tubular air heater which permits retrofit installation of additional flue gas environmental treatment equipment. A divider plate is located within the inlet plenum to subdivide it into first and second flue gas... | 12/17/2002 |
| 6405791 | Air heater gas inlet plenum A modified air heater gas inlet plenum for a tubular air heater which permits retrofit installation of additional flue gas environmental treatment equipment. A divider plate is located within the inlet plenum to subdivide it into first and second flue gas... | 06/18/2002 |
| 6244196 | Apparatus and method for burning organic material An apparatus and method for burning organic material including farm bedding waste of the present invention includes a firebox having an air injector disposed within the firebox. A heat exchanger is also disposed within the firebox above the air injector. ... | 06/12/2001 |
| 6044837 | Intertwined helical heat exchanger A combustion and heating chamber into which a fluid is pumped under pressure is provided. A burner is positioned in the combustion and heating chamber to provide a heat load to the pressurized fluid in the chamber. As the fluid is heated its internal pres... | 04/04/2000 |
| 5950616 | High-efficiency waste oil fire heater A high efficiency heater system made up of a longitudinally extending combustion chamber located within an external enclosure which is spaced apart from the combustion chamber to provide an air space. A burner assembly provides combustion gases into one e... | 09/14/1999 |
| 5839375 | Apparatus for burning organic material An apparatus and method for burning organic farm bedding waste includes a firebox having an air injector disposed within the firebox. A heat exchanger is also disposed within the firebox above the air injector. The fuel to be burned, a mixture of organic ... | 11/24/1998 |
| 5540213 | Portable kerosene heater A kerosene heater (1) having a pump assembly (106) which includes a piston (113) having a hollow bore (121) through which fuel (98) is routed to the hollow shaft of a fuel atomizer (27). The piston (113) is operated by a cam (117) machined into the shaft ... | 07/30/1996 |
| 5531212 | Multi oil furnace A multi oil furnace is disclosed wherein the external cabinet shell houses a central burner chamber, an upper bank of conduits and a lower bank of conduits. Headers operably coupling the burner chamber, the upper and lower banks of conduits and a discharg... | 07/02/1996 |
| 5490495 | Cleanout header for multi oil furnaces A multi oil furnace is disclosed wherein the front door is sealable against the burner chamber and against a lip extending around the circumference of a front header formed in the cabinet shell to operatively interconnect an upper bank of heat exchanger c... | 02/13/1996 |
| 5477846 | Furnace-heat exchanger preheating system The invention provides in one broad aspect an improved process fluid preheater system for raising the temperature of a process fluid with a hot furnace gas, having a combustion furnace in communication with a shell and tube heat exchanger, wherein the fur... | 12/26/1995 |
| 5458484 | Pre-mix flame type burner A burner for burning a combustible gas comprising fuel gas and air that has been mixed before being supplied to the burner. The burner has a flame holder concavely recessed into a flame outlet. The concave configuration of the flame holder focuses the ind... | 10/17/1995 |
| 5363836 | Furnace with supplementary heat exchange means A furnace including an elongated housing having an air intake adjacent one end of the housing and an air discharge vent adjacent the other end of the housing utilizes a substantially U-shaped heat exchanger positioned within the housing and a partition su... | 11/15/1994 |
| 5222552 | Tubular heat exchanger and method for bending tubes The method of bending relatively thin wall tubing to form a tubular heat exchanger that has relatively tight bends with controlled wrinkles. For example, 1.75-inch outer diameter stainless steel tube may have a wall thickness of 0.035 inches and be bent u... | 06/29/1993 |
| 5205276 | Compact furnace heat exchanger A compact heat exchanger for a fuel-fired heating furnace. The heat exchanger has a radiative heat transfer section including at least one firetube for containing flue gases as the air to be heated passes over the firetube and a convective section includi... | 04/27/1993 |
| 5165386 | Compact gas-fired air heater A heat exchanger for heating air or another gas, comprising at least one gas-fired burner comprising a metal pipe-shaped combustion chamber which is part of the heat exchanger and extends in the path of the air to be heated, wherein the pipe-shaped burner... | 11/24/1992 |
| 5022379 | Coaxial dual primary heat exchanger Basically the present invention in its most simple form or embodiment is directed to a heat exchanger which provides for at least two heat exchange surfaces and which has the combustion of the fuel, which generates the heat, take place within the heat exc... | 06/11/1991 |
| 4905661 | Heat exchanger The present invention in its most simple form or embodiment is directed to a heat exchanger which provides for at least two heat exchange surfaces. The two heat exchange surfaces are defined by an inner wall or inner shell which separates a combustion reg... | 03/06/1990 |
| 4877014 | Tube arrangement for heat exchanger A tube arrangement for a tube-type heat exchanger. The tube arrangement provides for the location of the tubes in the upper portion of the drum defining the combustion chamber of the heat exchanger. In one embodiment, four heat exchange tubes are provided... | 10/31/1989 |
| 4836182 | Gas burning heating device A forced air gas fired heating device may be utilized as a stove insert for a conventional open fireplace or in an alternative embodiment may be formed with a double walled construction for use as a free standing unit. In both embodiments a gas burner adj... | 06/06/1989 |
| 4784110 | Wall furnace The heat exchanger of a gravity flow wall furnace defines a tortuous, mostly vertical path for the combustion gases to improve heat transfer to the room. The gases are directed upwardly in a combustion chamber and then split into two portions and conducte... | 11/15/1988 |
| 4776320 | Device for inhibiting NOx formation by a combustion system A device is disclosed for use in a combustion system to inhibit formation of oxides of nitrogen (NOx) by the combustion system thereby reducing NOx emissions from the combustion system. The device is made of a material, such as stain... | 10/11/1988 |
| 4706646 | Total counterflow heat exchanger A total counterflow heat exchanger comprising a system of partitions dividing an interior chamber into a series of channels which coincide with the path of a duct through that interior chamber. A substance at one temperature is passed through the duct, an... | 11/17/1987 |
| 4630592 | Wood stove The heating stove comprises from top to bottom, a smoke space, an oven, a combustion chamber and an ash-pit; a grate separates the chamber from the ash-pit. The grate comprises a plurality of open-ended hollow cylindrical metallic ducts which criss-cross ... | 12/23/1986 |
| 4603680 | Furnace inducer outlet box assembly A furnace flue gas draft inducer outlet box assembly is provided for connecting an inducer housing to a vent pipe, and comprises a plurality of differently directed openings to allow the vent pipe to be connected thereto in one of a plurality of different... | 08/05/1986 |
| 4597375 | Wood burning furnace A maximum efficiency stove or furnace for heating homes or other buildings is disclosed. The furnace includes a combustion chamber supported within a furnace housing by an ash pan. The combustion chamber is spaced apart from the furnace housing to define ... | 07/01/1986 |
| 4579102 | Biomass heat exchanger furnace A hot air heat exchanger furnace that uses crop residue as a fuel source is provided for producing the heat required for various purposes, such as the drying of grains, peanuts, soybeans and other materials and for the heating of buildings. The furnace in... | 04/01/1986 |
| 4558689 | Combustion gas heat recovery apparatus A secondary heat exchanger is positioned within a cold air return plenum of a forced air gas or oil fired furnace to preheat cold air drawn into the furnace through the cold air plenum. A heat recovery flue pipe is connected between a primary flue pipe of... | 12/17/1985 |
| 4553527 | Catalytic unit for burners Apparatus supporting a catalytic converter for a burner comprising a support including an opening for passage of exhaust gases therethrough, a catalytic converter mounted on the support for movement into and out of an operating position adjacent to the op... | 11/19/1985 |
| 4520790 | Air heating furnace Hot gases from a fuel burner in a combustion chamber are exhausted to a flue at the top of the furnace. Air to be heated is drawn into the furnace through an upper inlet, passes through a chamber around combustion gas flow tubes, and then downwardly throu... | 06/04/1985 |
| 4515145 | Gas-fired condensing mode furnace A gas-fired, condensing mode, hot air furnace has an exhaust passage for carrying the products of combustion from a gas burner to an exhaust flue. A heat exchanger is provided in the exhaust passage for extracting heat from the products of combustion. An ... | 05/07/1985 |
| 4479481 | Wood fuel heating apparatus and combustion process A boiler having a downdraft solid fuel firebox with a refractory hearth structure with a plurality of parallel internal conduits forming an internal combustion chamber, a heat exchanger below the firebox connected to the outlet of the internal combustion ... | 10/30/1984 |
| 4478158 | Condensing furnaces An improvement in a condensing furnace where gaseous products of combustion are ducted through fin tube condensers that act to heat incoming air. The improvement involves spraying water into the products of combustion upstream of the fin tube condenser, s... | 10/23/1984 |
| 4449510 | Biomass heat exchanger furnace A hot air heat exchanger furnace that uses crop residue as a fuel source is provided for producing the heat required for various purposes, such as the drying of grains, peanuts, soybeans and other materials and for the heating of buildings. The furnace in... | 05/22/1984 |
| 4422437 | Catalytic firebox A housing is provided defining a closed lower combustion chamber and a closed upper afterburn chamber disposed immediately above the combustion chamber with one marginal portion of the combustion chamber projecting horizontally outwardly beyond the corres... | 12/27/1983 |
| 4396002 | Tubular air heater An air heater comprises a plurality of passes, each having tube banks built into a gas conduit through which passes a flow of heating gas. It also comprises a plurality of delivery and collecting air ducts series-arranged one above the other. The delivery... | 08/02/1983 |
