Sensor stem, sensor device having the same, and method of manufacturing sensor device
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United States of America Patent
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Jul 10, 2007
Grant Date -
Aug 11, 2005
app pub date -
Feb 9, 2005
filing date -
Feb 10, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A sensor stem supporting a sensor element comprising a metal plate having a shape defined by press, the metal plate include a dent portion formed on a first surface of the metal plate, a step portion formed on a second surface of the metal plate facing the first surface, and a projection formed on the step portion for resistance welding. It is thus possible to obtain an excellent hermetic sealing of the sensor stem and a cap, which protects an oscillator, a circuit board and the like. The sensor stem can prevent a short circuit and can be lowered in height thereof.
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