Measuring and testing – Fluid pressure gauge – Diaphragm
Patent
1992-05-05
1994-06-07
Woodiel, Donald O.
Measuring and testing
Fluid pressure gauge
Diaphragm
73727, 338 4, 338 42, G01L 906, G01L 1302
Patent
active
053179218
ABSTRACT:
A resistive strain gauge sensor of the type including a circuit board carrying circuitry, a diaphragm bonded to the circuit board, and strain gauge circuitry on the diaphragm. The strain gauge circuitry includes a plurality of leads defining free ends and the circuitry on the circuit board defines a plurality of leads defining free ends. The diaphragm is bonded to the circuit board by a frit layer and the frit layer includes voids which are in respective alignment with the free ends of the strain gauge leads and the free ends of the circuit board leads. A conductive epoxy is positioned in the voids in the frit layer to establish electrical communication between the strain gauge circuitry leads and the circuit board leads without the use of solder joints.
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Woodiel Donald O.
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