Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1997-03-17
1999-04-06
Walberg, Teresa
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
219440, 219431, 219432, 99292, A47J 31043, A47J 31047
Patent
active
058922040
ABSTRACT:
A vacuum coffee maker has a starved electric heating arrangement having a solid body providing a reservoir. The chamber is covered by a circular lid that prevents flow of steam directly vertically up a tube from the chamber. At the end of a normal heating cycle, the temperature of the body rises rapidly and power supplied to a heating element is automatically turned off under the control of a thermostat. The heating arrangement is used without alteration (e.g. to the setting of the thermostat) to keep-warm hot coffee in a lower container after the end of the normal heating coffee-making cycle. The effect of having the lid is that during a keep-warm function, the reservoir is generally starved of liquid because any liquid entering the reservoir is immediately evaporated and this restricts flow of more liquid into the reservoir and hence starves the reservoir.
REFERENCES:
patent: 3682089 (1972-08-01), Unger et al.
patent: 3701883 (1972-10-01), Tilp
patent: 4100394 (1978-07-01), Tilp
patent: 4292888 (1981-10-01), Wells et al.
patent: 4793245 (1988-12-01), Kimura
patent: 5651905 (1997-07-01), Thies et al.
Chiaphua Industries Limited
Pelham J.
Walberg Teresa
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