Measuring and testing – Fluid pressure gauge – Diaphragm
Patent
1991-01-10
1992-11-17
Woodiel, Donald O.
Measuring and testing
Fluid pressure gauge
Diaphragm
92103SD, G01L 708
Patent
active
051633272
ABSTRACT:
Pressure vessel components of a sensing element are formed from liquid crystal polymers. Individual LCP components may be ultrasonically adhered to one another to form a hermetic seal. In the preferred embodiment, a metal tube is hermetically sealed to a pressure vessel cup by molding an LCP resin around a cleaned and heated tube to form a hermetic seal. Also in the preferred embodiment, the sensing element includes a single convolution diaphragm formed under heat and pressure using a polyimide film.
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Johnson Service Company
Woodiel Donald O.
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