COLOR CHANGING HVAC GAUGE AND RELATED METHOD
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United States of America Patent
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Issued Date -
Sep 27, 2012
app pub date -
Mar 23, 2011
filing date -
Mar 23, 2011
priority date (Note) -
Abandoned
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Abstract
In a device for taking pressure readings on a HVAC system, a first gauge is connectable in communication with the HVAC system for taking a first pressure reading thereof. A second gauge is connectable in communication with the HVAC system for taking a second pressure reading thereof that is independent of the first pressure reading. A backlight display of each gauge is configured to illuminate the face of each gauge in a respective color that conveys the type of refrigerant in the HVAC system. An integrated circuit is coupled to the gauges to change the colors of the backlight displays.
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