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US 4,782,708 AGranted
Thermocouple sensors
AssigneeGeneral Motors Corporation
InventorsCharles R. Harrington, Joseph P. Heremans
Life of this patent
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Abstract
An air flow sensor which employs a thermocouple using a film of bismuth.sub.0.92 antimony.sub.0.08 to form junctions with gold, platinum or nickel strips and a resistive strip heater of the same metal.
Claims8
A sensor for use in an air flow sensor system which comprises:
- means forming a common substrate;
- means forming a resistive strip heater of a first metal supported on said substrate and adapted to be supplied with heating power;
- and
- means for forming a pair of thermocouple junctions including a pair of spaced junction elements of the first metal and, extending between the pair of junction elements and forming junctions therewith, a continuous film of Bi.sub.1-x S.sub.bx where X=0.01 to 0.15.
1 more element
Dependencies are inferred from the claim text.