Temperature sensing and indicating beverage mug
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United States of America Patent
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-
Oct 21, 1997
Grant Date -
N/A
app pub date -
Oct 16, 1995
filing date -
Oct 16, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A hot beverage mug automatically senses the temperature of its liquid contents and generates an accurate aural and/or visual indication of the temperature sensed. The temperature is sensed by a thermistor in a resistive capacitive (R/C) circuit which operates to yield a signal of variable frequency corresponding to the temperature sensed. An integrated circuit (IC) logic controller treats this electrical signal as an input which triggers a further electrical signal from the IC controller to an aural or visual display generating device such as an annunciator, a light emitting diode (LED), liquid crystal display (LCD) or a simulated voice expressing the temperature sensed. The power for the R/C circuit, the IC and the aural/visual indicator(s) is supplied from a battery and controllable by a switch activated either manually or automatically upon sensing the pressure of the liquid contents or by physical contact with the mug handle.
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Family
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