Weighing apparatus with radio interference protection
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United States of America Patent
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Aug 1, 1989
Grant Date -
N/A
app pub date -
Jul 29, 1988
filing date -
Aug 1, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A region where a load cell and a weighing hopper or a scale plate are coupled to each other is surrounded by a radio wave inhibiting member. When a weighing apparatus is used in a place subjected to extraneous radio waves of a high electric field intensity, and a high-frequency voltage is induced in the weighing hopper or the scale plate which serves as an antenna, the radio wave inhibiting member prevents a high-frequency current produced by the high-frequency voltage from flowing into the load cell. Therefore, the weighing apparatus is completely protected against any weighing errors which would otherwise result from radio interference with the load cell.
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