Printed wiring board inspection apparatus
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United States of America Patent
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-
Aug 6, 2002
Grant Date -
N/A
app pub date -
Oct 28, 1999
filing date -
Dec 29, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The pneumatic cylinder is fixed on between the lower member of the upper unit and the lower member of the lower unit. As the shaft of the pneumatic cylinder extends, the upper unit starts lowering by its own weight at first. When the upper unit reaches to the point limited by the stopper, the lower unit then starts rising and the lower unit stops in a state where the shaft has extended to its full length. In this state, the probes and are in contact with the printed wiring board as applying a specified pressure to it.
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