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Apparatus for detecting probe dislodgement

  • US 4,399,824 A
  • Filed: 10/05/1981
  • Issued: 08/23/1983
  • Est. Priority Date: 10/05/1981
  • Status: Expired due to Fees
First Claim
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1. Apparatus for indicating the dislodgement of an article from a body, said apparatus comprising:

  • a temperature responsive element having a characteristic which varies as a function of its temperature, said element adapted for contact with a body for sensing the proximity of said element to said body;

    means for periodically heating said temperature responsive element and for developing a control signal which varies in accordance wih said characteristic of said temperature responsive element and is representative of the heating of said element and the heat dissipated from said element;

    and means responsive to said control signal for developing an indication of said proximity of said temperature responsive element to said body.

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