Quick connect sensor apparatus
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United States of America Patent
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Apr 23, 2013
Grant Date -
Jun 9, 2011
app pub date -
Dec 6, 2010
filing date -
Dec 8, 2009
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An electronic sensor for determining if a metal hose connector is fully snapped into its mating plastic connector. This sensor detects the metal hose in position by having a coil in position over the plastic connector and at the end of the metal hose when it is in correct position. The metal of the hose interacts with the magnetic field of the coil to both increase the inductance and greatly reduce the ‘Q’ because of the “shorted turn†effect of the round metal hose. The sensor inherently detects faults in its own circuit because of the comparator voltage window. Faults such as an open coil, oscillator or rectifier failure will appear at the output as “hose disconnected†which is the desirable failure mode. The invention also detects external faults because of the two non-zero, non-line voltages seen during normal operation.
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