Seal inspection apparatus and method
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United States of America Patent
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N/A
Issued Date -
May 1, 2008
app pub date -
Oct 25, 2006
filing date -
Oct 25, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A seal inspector and a method of inspecting a seal are described. A seal inspector includes an eddy current sensor for detecting changes in an eddy current within a lid seal of a can. The eddy current sensor includes a signal line for creating a magnetic field, which induces the eddy current. The induced eddy current generates a magnetic field that acts on the alternating current and as a consequence produces an eddy current response. A signal processing control unit receives the eddy current response and determines whether a value associated with the eddy current has surpassed a threshold value. If the associated value has surpassed the threshold value, the can may be ejected from a can conveyor system.
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