Pressure sensing elements
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United States of America Patent
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-
Nov 17, 1992
Grant Date -
N/A
app pub date -
Jan 10, 1991
filing date -
Jan 10, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
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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