Heating systems – Automatic control – Steam
Reexamination Certificate
1999-06-18
2001-04-03
Joyce, Harold (Department: 3744)
Heating systems
Automatic control
Steam
Reexamination Certificate
active
06209795
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to camping apparatus for heating the interior of a portable habitation and, more particularly, to such camping apparatus that a fire to provide heated air to an interior heater in the portable habitation.
Hunters, explorers, geologists and other campers commonly use a portable habitation, such as a tent, for resting and sleeping. Sometimes during cold weather, these individuals find fuel, such as wood from trees, near the campsite to provide an open fire in the habitation to make themselves comfortable. Sometimes a camp stove is brought along with the habitation primarily for cooking food and secondarily for heating the habitation.
The use of an open fire in the habitation is extremely dangerous because the open fire inside can envelop the material used to make the habitation and destroy it. In which event, the people in the habitation can be injured by the ensuing fire or by the cold weather existing outside of the habitation. Also, it is extremely dangerous because an open fire inside the habitation may emit harmful or deadly gases, such as carbon monoxide, directly into the habitation. In which event, the people in the habitation can be asphyxiated.
A combination heater and catalytic converter is available to provide heat within a habitation. However, the heat generated from a catalytic converter can be sufficiently hot to cause the material of the habitation to burn. In which event, the fire could envelop the material used to make the habitation and destroy it with the people in the habitation being injured by the ensuing fire or by the cold weather existing outside of the habitation.
Accordingly, it is an object of the present invention to provide apparatus for heating the interior of a portable habitation.
Further, it is an object of the present invention to provide apparatus for heating the interior of a portable habitation that uses a fire, which is positioned away from the habitation by a distance sufficient to prevent damage to the habitation from the fire.
Further, it is an object of the present invention to provide a method of providing heat to the interior of a portable habitation.
Further, it is an object of the present invention to provide a method of providing heat to the interior of a portable habitation by using a fire that is positioned away from the habitation by a distance sufficient to prevent damage to the habitation from the fire.
BRIEF SUMMARY OF THE INVENTION
In accordance with the present invention, there is provided apparatus for heating an interior of a portable habitation. The apparatus comprises an interior heater for heating the interior of the portable habitation. A heat transfer device uses fumes emitted by a fire to provide heated air. Transporting apparatus transports the heated air from the heat transfer device to the interior heater. The interior heater is disposed at a first location and the fire is disposed at a second location, the first and second locations being disposed sufficiently apart from one another to prevent the fire at the second location from spreading to the portable habitation at the first location. The transporting apparatus has a length sufficient to extend between the first and second locations.
Further, in accordance with the present invention, there is provided camping apparatus for heating an interior of a portable habitation. The camping apparatus comprises an interior heater for heating the interior of the portable habitation, which is disposed at a first location. A heat transfer device uses fumes emitted by a fire to provide heated air. The fire is disposed at a second location. The first and second locations are disposed sufficiently apart from one another to prevent the fire at the second location from spreading to the portable habitation at the first location. The heat transfer device includes a chimney to transport fumes emitted by the fire away from the fire. The chimney includes a center that is constructed with sidewalls tapering toward one another away from the fire. A plurality of fins for transferring heat from the fumes is connected to and extends away from the chimney. Each of the plurality of fins is constructed to have a curved surface for urging the air being heated into a flow around the chimney. A sleeve containing a quantity of air detachably is connected to and disposed around the chimney outwardly of the fins. The sleeve includes an interior to contain the quantity of air. An air inlet for allowing the quantity of air to be continuously supplemented is disposed in fluid communication with the interior. A heated air outlet for allowing the quantity of air to be continuously exhausted is disposed in fluid communication with the interior. Transporting apparatus transports the heated air from the heat transfer device to the interior heater. The transporting apparatus has a length sufficient to extend between the first and second locations and an elongated tube connected to the heated air outlet of the sleeve. A burner providing a continuous fire is fed by fuel supplied by a fuel tank. A connector connects the burner to the heat transfer device and includes positioning apparatus for centering the burner relative to the center of the chimney. The positioning apparatus has at least three screw members threadedly connected to and disposed to extend inwardly to engage the fuel tank.
Further, in accordance with the present invention, there is provided a method of providing heat to an interior of a portable habitation. The method comprises the steps of choosing a first location to place the portable habitation. The minimum distance from the first location where a fire may be used outside of which the fire may be used that will not spread to the portable habitation is determined. A fuel tank is positioned at a second location chosen outside of the minimum distance. A burner is attached to the fuel tank. A chimney is mounted over the burner. One end of a transporting apparatus is connected to the sleeve and another end of the transporting apparatus is connected to a heat transfer device in the portable habitation. A fire is started on the burner and air is passed through the sleeve while fuel is being burned by the burner.
REFERENCES:
patent: 4138985 (1979-02-01), Marley
patent: 4691688 (1987-09-01), Urso
patent: 4848310 (1989-07-01), Millington
patent: 4860726 (1989-08-01), Barker
patent: 5121739 (1992-06-01), Barker
patent: 5619935 (1997-04-01), Wilson
Boles Derek S.
Joyce Harold
Post, III Harry C.
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