Measuring and testing – Specimen stress or strain – or testing by stress or strain... – Specified electrical sensor or system
Patent
1997-02-27
1999-01-19
Noori, Max H.
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
Specified electrical sensor or system
73721, G01B 716
Patent
active
058615580
ABSTRACT:
A pressure sensor has resistive elements for measuring strain on the surface of a diaphragm. Each resistive element has first and second metallic pads with at least two lines of piezoresistive material formed between the pads, each exhibiting a high length to width aspect ratio. The pressure gauge may be of a one piece, cup-shaped construction having a diaphragm forming the floor of the cup. The internal diameter of the cup is less than 10 mm, and piezoresistive, thick film elements are formed on the inside surface of the diaphragm. The piezoresistive elements may be formed using a pen to trace a pattern of resistive ink on the substrate surface, using a stencil or using electrostatic spraying of the resistive ink onto the substrate surface.
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Buhl Timothy R.
Soos Steve
Noori Max H.
Sigma-Netics, Inc.
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