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US 4,307,284 AGranted
Electric space heater unit utilizing incandescent lamps as the heat source
OwnerLeo Perroninventor
Life of this patent
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OwnerLeo Perroninventor
Estimating the term…
An electric space heater unit includes a casing having front, rear and end walls providing an enclosure. An imperforate copper heat collector plate is disposed within the enclosure intermediate the top and bottom of the casing and extends the length and width of the interior casing space so as to divide the casing to a lower closed heating chamber and an upper heat distribution chamber. A plurality of conventional frosted 75 or 100 watt incandescent lamps are provided in the lower chamber in direct heat conductive contact with the undersurface of the plate. A heat radiation member in the form of a sinuous metal strip or a plurality of metal fins on a common metal support is disposed in the upper chamber in direct conductive contact with the upper surface of the plate. The top of the casing has an opening for passage of heat from the upper chamber into the space to be heated. The rear wall is contoured to reflect heat outwardly through the opening. The number of lamps energized can be varied to adjust the level of heat output.
In a space heater unit, a casing having front, rear and end walls providing an enclosure, a substantially imperforate heat collector plate of high heat conductive material extending within the enclosure, said plate being disposed intermediate the top and bottom of the casing and extending substantially the length and width of the interior space defined by said casing so as to divide the casing interior into an upper heat distribution chamber and a lower closed heating chamber, a plurality of electric lamps mounted within said lower chamber, each of said lamps having glass bulbs in direct heat exchange contact with the underside of said plate, and increased surface area heat radiation means mounted in said upper chamber in direct heat conductive contact with and along the upper surface of said heat collection plate, the upper part of said casing having an opening extending over at least part of said top wall and through which heat from said heat conductor plate and radiation means passes into the space to be heated.
Dependencies are inferred from the claim text.