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| Portable container for food or drink to be warmed or cooled |
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Catalytic heater or warmer
| Details |
Inventors: Rappaport, Alfred A.;
Assignee:
Primary Examiner: Capossela; Ronald C.
Assistant Examiner:
Attorney, Agent or Firm: Miller; Gustave
This is a catalytic warmer or heater which may be made in different sizes and shapes. A chimney section top has an opening through which a heatable material container is insertable, and which rests on an X-frame supported on punched-in tongues providing draft apertures for the chimney, while a lower spaced series of punched-in tongues rest on a catalyst containing cage which, in turn, rests on a flange of fuel cartridge section below having a wick extending up from the cartridge to be lighted temporarily to initiate the catalytic combustion process. The supporting X-frame has a depending cylinder providing a snuffer to snuff out the wick and permit the catalytic combustion to continue. The catalytic combustion is stopped when desired by merely turning the entire heater or warmer upside down and then removing the fuel cartridge containing section, now on top, from the chimney section, now on bottom, the catalyst cage remaining with the chimney section and thus separated from the cartridge fuel section. |
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DETAILED DESCRIPTION OF THE INVENTION There is shown at 10 the complete, assembled catalytic heater or warmer of this invention.
This heater 10 includes a lower fuel cartridge containing section 12 adapted to receive and hold a disposable fuel cartridge 14.
This fuel cartridge 14 has a sealed, readily removable cover 16 having a pull handle 18 so that it can be pulled up, leaving an inwardly extending ledge 20 adjacent but slightly spaced from the top edge of the cartridge.
Within the cartridge 14 there is provided a wad of fuel absorbent material 22 which is saturated with a premeasured amount of fuel, just enough so that it will not leak when turned upside down.
Any suitable fuel may be used, such as petroleum distillates or ethyl alcohol or other suitable readily vaporizable fuels.
This disposable cartridge 14 will preferably be made of aluminum.
On the top of fuel absorbent material 22, there is provided an activated charcoal impregnated screen filter 24 to filter the fuel vapor as it rises therethrough in operation.
Extending through this filter 24 is a non-inflammable wick 26 from near its bottom to a suitable distance thereabove, so that it may be extended high enough to pass through appropriate openings through a catalyst containing stainless steel cage 28 placed on and supported on the flange 20 after the fuel cartridge 14 has been opened and inserted in lower section 12.
This stainless steel catalyst cage 28 consists of two flanged or dished foraminated stainless steel plates 30 and 32, the flange 34 of one plate 32 being bent over into a lip 36 over the flange of the other plate for locking the plates 30 and 32 together and also holding a catalyst impregnated screen 38, platinum or palladium being the catalyst material conventionally being used, made up possibly as set forth in the Smith patents listed above, U.
S.
Pat.
Nos.
2,670,728 and 2,942,601.
The perforations through the plates 30 and 32 have upwardly extending lips 40 so that the upper end 42 of the wick 26 may be readily extended therethrough
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