Temperature indicator for motor vehicle

Details Temperature indicator for motor vehicle Temperature indicator for motor vehicle

1999-09-23

2003-07-15

Gutierrez, Diego (Department: 2859)

Thermal measuring and testing

Temperature measurement

Nonelectrical, nonmagnetic, or nonmechanical temperature...

C374S109000, CD12S187000

Reexamination Certificate

active

06592255

ABSTRACT:

FIELD
This invention relates to a temperature indicator for a motor vehicle arranged to indicate, to the driver of the vehicle, the ambient temperature either inside or outside the vehicle, the temperature indicator comprising thermochromic material applied to a reflective member of a rear view mirror and positioned so as to be visible to the driver of the motor vehicle.
RELATED ART
FR-A-2386028 discloses a temperature indicator of this type in which the mirror glass of an exterior mirror has a coating which is clear and transparent when a threshold temperature is exceeded and which becomes opaque or coloured at temperatures below this threshold.
SUMMARY OF THE INVENTION
According to the invention, in a temperature indicator of the type described above, the thermochromic material is arranged in a line, locations along which are arranged to change colour at successively increasing temperatures.
The successively increasing temperatures may be in accordance with a standard scale, for example °C.
The invention also provides a rear view mirror having a temperature indicator of the type described above.


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