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Sealed control device with magnetically adjustable control parameter

  • US 7,767,919 B2
  • Filed: 02/07/2007
  • Issued: 08/03/2010
  • Est. Priority Date: 02/08/2006
  • Status: Expired due to Fees
First Claim
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1. A vibration switch, comprising:

  • a first electrical contact and a second electrical contact;

    a sealed housing containing;

    a switch element arranged in series between said first electrical contact and said second electrical contact, said switch element having a first state with a first impedance and a second state with a second impedance which is different from said first impedance;

    a vibration sensor with a vibration sensor output;

    a memory element for holding a threshold parameter;

    a magnetic sensor; and

    ,a control element arranged to control the state of said switch element as a function of said vibration sensor output and said threshold parameter, wherein said threshold parameter is updated in response to a magnetic field selectively applied to said magnetic sensor.

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