Famous Patents
The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8161959 | Wood burning furnace A wood burning furnace providing, in sequential connection, an air box, a fire box with a wood storage box/primary combustion chamber and a secondary combustion chamber separated by an ash grate, a heat exchanger, an exhaust manifold, and a smoke stack. The air box ... | 04/24/2012 |
| 6213116 | Wood and multi-fuel burning stove A wood or multi-fuel stove comprises a primary combustion chamber, a flue duct extending from an upper part of the primary combustion chamber; a grate defining a lower boundary for the primary combustion chamber, the grate extending from the front towards... | 04/10/2001 |
| 5494025 | Heat exchanger for multi oil furnaces A heat exchanger for a multi oil furnace is disclosed wherein the external cabinet shell houses a central ventilation chamber divided into inlet and outlet sides by a generally vertical barrier. Combustion gases flow from the burner chamber into an upper ... | 02/27/1996 |
| 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 |
| 5479916 | Low profile gas burner fireplace table A low profile gas burner fireplace is provided for mounting under a low table top or counter. The fireplace system comprises a decorative insulated table top mounted on the top wall of a low profile fireplace. The fireplace is provided with a hot exhaust ... | 01/02/1996 |
| 4856491 | High efficiency solid fuel burning stove A solid fuel heating apparatus including a secondary combustion chamber in gaseous communication with a primary combustion chamber for increasing heating efficiency and for reducing polluting emissions. The secondary combustion chamber is lined with a ref... | 08/15/1989 |
| 4694817 | Heating stove and method for the combustion of fuels in heating stoves In order to eliminate flue gases generated in combustion of fuels in heating stoves a heating stove (1) is designed with a duct (14) above the fireplace (5) and closeable by means of a damper (16), whereby the flue gases pass through the bed of embers gen... | 09/22/1987 |
| 4677965 | Wood or coal burning heater A high-efficiency clean burning heater for the burning of wood or coal is disclosed. The heater has a primary combustion chamber for the burning of solid fuel positioned above a secondary combustion chamber for the burning of combustible gases and polluta... | 07/07/1987 |
| 4665889 | Stove Wood burning stove having several features for reducing emissions output and for improving energy efficiency by increasing the supply of oxygen to combustible materials, by increasing the mixing of oxygen with combustible materials, and by lengthening the... | 05/19/1987 |
| 4662351 | Stove for combusting both liquid and solid fuels A stove for combusting both liquid and solid fuels, said stove comprising: a burner area in which the burner for liquid fuel is located, a collecting area for combustion gas above said burner area and connected therewith; a discharge conduit for the combu... | 05/05/1987 |
| 4658801 | Stove with multiple chambers A stove comprises walls defining a main air inlet, a flue outlet and four chambers through which gas passes sequentially from the main air inlet to the flue outlet during normal operation of the stove. The chambers comprise a pre-heat plenum chamber into ... | 04/21/1987 |
| 4607610 | Downdraft stove with tubular grating A downdraft stove with a conical reaction chamber surrounded by a heat-insulating mass is disclosed. A tubular grating installed in the reaction chamber has a substantially vertically oriented central tube open at its upper end and connected at its lower ... | 08/26/1986 |
| 4572155 | Convergent flow stove A stove for burning combustible solid organic material, such as wood. The stove has a vertical fuel chamber with a combustion zone in the lower portion of the fuel chamber which is defined by an air inlet passage across the width of the fuel chamber and a... | 02/25/1986 |
| 4545360 | Clean burning solid fuel stove and method A stove and method for burning solid fuels having an insulated primary combustion chamber, uniform distribution of preheated primary air through upward facing holes in a grate, downward flow of combustion gas through the grate, retention of hot coals in t... | 10/08/1985 |
| 4510917 | Passive mode solid fuel burning furnace A downdraft furnace comprises a combustion component associated with a heat exchange component. The combustion component includes a fuel chamber, a primary combustion chamber and a secondary combustion chamber operatively interconnected by a constricting ... | 04/16/1985 |
| 4499889 | Method and apparatus for improved construction of fuel burning heating assemblies An improved heating apparatus, for example for use as a wood or coal burning parlor stove and providing a significant heat output, has a construction for reducing thermally induced mechanical stress and for enabling the interior baffle assembly components... | 02/19/1985 |
| 4487195 | Fuel burning heating apparatus A heating apparatus for operating in one or the other of two combustion modes has a frame assembly enclosing a primary and secondary combustion chamber. A baffle, separating the chambers, provides for gaseous communication therebetween. Preheated primary ... | 12/11/1984 |
| 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 |
| 4471753 | Method and apparatus for burning solid fuels in a combustion chamber A burning method and apparatus, using solid type fuel, comprising a combustion chamber in combination with a heat-extractor labyrinth chamber through which an artificial draft is generated mechanically. The artificial draft can be generated by intake and ... | 09/18/1984 |
| 4397293 | Heating apparatus comprising a heat recovery apparatus A heating apparatus includes at least one combustion air inlet, a reverse-draft hearth having a grill positioned within a hearth plate, an ash receptacle for recovering combustion wastes, a fume outlet, a combustion chamber positioned under the reverse-dr... | 08/09/1983 |
| 4380228 | Sustained ignition secondary combustion unit A sustained ignition secondary combustion apparatus in a housing of refractory insulating material includes a first level for conducting secondary air through a secondary air inlet and channel, and a second level for conducting smoke products. A partition... | 04/19/1983 |
| 4368721 | Woodburning stove A wood burning stove having a lower main fire box and a vertically offset oven unit. Directly under the cooking surface of the lower firebox is an auxiliary firebox; the air supply inlet has means to selectively direct the incoming air to either firebox s... | 01/18/1983 |
| 4285328 | Agricultural waste burning heater and heating method A heater which burns agricultural waste as its heat source includes a combustion chamber for the waste having a bottom opening, a grate for supporting the waste, an access lid at the top and an air intake at or adjacent the top. The bottom opening is conn... | 08/25/1981 |
| 4265214 | Heater A heating apparatus is disclosed wherein a combustion chamber which contains the fuel to be burned is located adjacent to an air heating chamber. Conduit means communicate from the air heating chamber to the combustion chamber for the purpose of leading a... | 05/05/1981 |
| 4252104 | Space heaters A space heater has a combustion chamber provided with hollow cheeks adapted for providing a supply of air into the combustion chamber at a level above the burner. The space heater incorporates a water boiler and a cooker unit which are arranged to be heat... | 02/24/1981 |
| 4194487 | Downdraft woodburning stove A downdraft woodburning stove in which there is improved combustion, heat transfer and combustion regulation comprising novel air inlet circulation, grate construction and automatic control of (1) temperature of exhaust gases and (2) of combustion air, an... | 03/25/1980 |
| 4182304 | Downdraft furnace The disclosure is of a downdraft furnace fired by solid, carbonaceous fuels such as wood logs, coal and the like. The furnace is adapted for burning the fuel in three stages, to obtain complete combustion. The advantage of the furnace of the invention res... | 01/08/1980 |
| 4102318 | Stratified combustion furnace This invention has to do with apparatus for burning solid fuels in successive stages whereby the fuel is completely converted to clean, hot, incombustible gases and to ashes, and, without admixture, transfers its heat to clean fresh air for distribution t... | 07/25/1978 |
