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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 7132084 | Candle warmer A scent dispersion system, comprising a heating device having a top surface, and a container of scented wax disposed upon the top surface of the heating device. Upon heating, scent from the wax is caused to disperse into the surrounding environment. The system may f... | 11/07/2006 |
| 7074117 | Blasting nozzle A blasting nozzle for a blasting apparatus includes an inlet for attachment to the outlet hose of the blasting apparatus, an accelerating portion, and an outlet portion through which an accelerated abrasive-laden jet can be ejected. The outlet portion has an interio... | 07/11/2006 |
| 7013079 | Hybrid hot air heater In a hybrid hot air heater according to the present invention, a chassis having first and second outlets 13 on its front face and first and second inlets 12 on its rear face incorporates therein a gas heater unit 2 comprised of a gas burner 2... | 03/14/2006 |
| 6718968 | Enclosure for an infrared heater A burner and fan enclosure for an infrared heater includes a low pressure housing 10 with an internal high pressure housing 24. A centrifugal fan 39 is located within the low pressure housing 10 and provides combustion air to the high pre... | 04/13/2004 |
| 6694968 | Linear multi-oil furnace and heat exchanger A multi-oil fired furnace having a heat exchanger that extends rearwardly of the combustion chamber and utilizes laminar air flow around the combustion chamber to minimize the width and height dimensions of the cabinet shell for the furnace. The heat exch... | 02/24/2004 |
| 6644300 | Portable blower heater/cooler apparatus A portable blower heater/cooler apparatus for providing 360 degrees of air-forced heat. The portable blower heater/cooler apparatus includes a base housing assembly including a base housing member being mounted upon leg members and having an opening throu... | 11/11/2003 |
| 6598599 | Hot air space heater An object of the present invention is to provide a hot air space heater that is capable of blowing hot air out of a whole wide hot air outlet provided at a front plate of a frame of the heater while making the heater smaller in depth. A burner is arranged... | 07/29/2003 |
| 6595200 | Mobile heater A mobile heater that can be easily moved to any location and can be stored and transported in a compact configuration is disclosed. The mobile heater comprises of a housing with a removable combustion chamber that can be removed and reattached as desired ... | 07/22/2003 |
| 6152128 | Easily-assembled portable forced-air heater with reduced number of components A portable forced air heater includes a one-piece unichassis structure which forms the base and the outer housing of the heater. The outer housing defines an elongated passage having a front end and a back end and which receives a burner assembly. The bur... | 11/28/2000 |
| 6019069 | Gas-fired heaters with burners which operate without secondary air and have a substantially sealed combustion chamber A gas-fired burner apparatus includes a porous combustion surface disposed in a combustion chamber substantially sealed to prevent entry of secondary air. A subatmospheric pressure is maintained in the combustion chamber by a natural or aspirated draft. T... | 02/01/2000 |
| 5988157 | Furnace with split heat exchanger A furnace having improved heat exchanger, which is particularly suitable for use in a positive pressure, direct-vented hot air furnace. The heat exchanger has a split housing construction allowing the heat exchanger to be partible into halves. Parting the... | 11/23/1999 |
| 5988156 | Fluid fuel spray burner for a heater A fluid spray burner for a heater having a nozzle block which supports a spray nozzle and to which fuel can be fed from a fuel line via a fuel pump. A fuel pump is integrated in the burner housing, and in particular to a radial carrier plate thereof.... | 11/23/1999 |
| 5941232 | Space heater with novel fuel line assembly A portable space heater in which a fuel discharge nozzle discharges fuel into a combustion chamber from a fuel tank. A rigid non-flexible metal tube extends between the nozzle and tank. The tank includes an opening with a closure member in the opening. Th... | 08/24/1999 |
| 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 |
| 5429112 | Infra-red radiant tube heater A gas radiant tube heater and method of operating the heater. The heater has a housing and a radiant tube mounted within the housing. The heater further has a modular control box mounted within the housing in which serviceable parts can be easily removed ... | 07/04/1995 |
| 5399086 | Gas-fired air heater assembly In a direct gas-fire heater assembly having a generally box-like housing with a grate-like floor with a conventional gas regulator, a gas port mounted within a box-like shroud, the shroud having one side with a predetermined number, shape and size of prim... | 03/21/1995 |
| 5299554 | Burner for a motor vehicle heater A space heater for a motor vehicle contains a burner with a combustion air fan. A series resistor (24) is provided for partial load operation. This resistor (24) is arranged in a housing (2, 6) which surrounds the electric motor (4) driving the fan wheel ... | 04/05/1994 |
| 5273210 | Room heating arrangement The room heating arrangement is provided with a radiation tube, connected to a pressure and mixing chamber casing 1, a pipe line system arranged above the room to be heated, the radiation tube being connected, on the one hand, to a return flow chamber 19 ... | 12/28/1993 |
| 5195886 | Combustion heater According to a first aspect of the invention, a combustion heater has an ECU for controlling operations of a glow plug, a battery, a fuel pump, and a blower for supplying air to a combustor. The ECU is responsive to an instruction signal instructing start... | 03/23/1993 |
| 5005556 | Efficient gas hot-air furnace and heating process Substantially all available heat from a combustion gas stream is extracted by passing it through a cool, porous heat sink, which is thereby heated, and then releasing that heat into a cool air stream blown through the same porous heat sink in a second ste... | 04/09/1991 |
| 4890598 | High efficiency blower A jet blower having a housing, a cylindrical chamber, a blower wheel in the chamber, four tangential passageways from said chamber, the passageways terminating in axially-directed nozzles and a Venturi foil surrounding each nozzle.... | 01/02/1990 |
| 4848313 | Compact forced air heater A compact forced air heater comprises a combustion chamber mounted in a housing, a burner module mounted across a back open end of the combustion chamber adjacent a back wall of the housing for producing heated air in the combustion chamber, an air intake... | 07/18/1989 |
| 4718602 | Fuel operated vehicle heater A fuel-operated vehicle heater especially of the type intended as an auxiliary or additional vehicle heater and which has a nozzle sitting on a nozzle holder to which fuel is fed from a fuel line by a filter, a fuel pump and an interposed solenoid valve. ... | 01/12/1988 |
| 4651711 | Forced air heater A forced air heater (10) includes a removable burner module (26) in which all of the burner components are mounted on a common support plate (42) to facilitate mounting of the burner module in the heater and removal of the burner module from the heater fo... | 03/24/1987 |
| 4475530 | Heating apparatus An apparatus for heating a fluid, as air, having a housing surrounding a heat transfer chamber. A casing having a combustion chamber is located in the heat transfer chamber. A motor driven fan mounted on the housing operates to supply air to the combustio... | 10/09/1984 |
| 4392478 | Portable heat circulation means A heat circulation device is provided which is portable to be usable placed upon conventional space heaters and particularly upon kerosene fueled heaters which includes a plenum housing adapted to be placed upon the heater which defines a plenum chamber t... | 07/12/1983 |
| 4287872 | Methods and apparatus for ductlessly distributing and circulating heated air from a gas-fired heater to heat large volumes of air in industrial facilities An apparatus for ductlessly distributing and circulating heated air from a gas-fired heater to heat large volumes of air in industrial facilities and the like includes an upstanding structure which defines a vertically extending chamber. Openings are prov... | 09/08/1981 |
