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Method and device for reliably monitoring a closed position of two parts moveable relative to one another

  • US 7,548,159 B2
  • Filed: 01/13/2006
  • Issued: 06/16/2009
  • Est. Priority Date: 07/21/2003
  • Status: Active Grant
First Claim
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1. A device for reliably monitoring a closed position of two parts moveable relative to one another, the device comprising an actuator and a sensor each for mounting to one of the parts, the sensor comprising a receiver circuit having an inductor and a capacitor connected to one another for generating a defined receiver circuit signal when a distance between the sensor and the actuator is less than a predetermined switching distance, the sensor further comprising a detector circuit connected to the receiver circuit for providing an enable signal when the defined receiver circuit signal is present, and a switching element designed to selectively suppress the defined receiver circuit signal by electrically isolating the detector circuit from at least one of the inductor and the capacitor.

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