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Series interlock system with integrated ability to identify breached locations

  • US 7,999,668 B2
  • Filed: 11/17/2008
  • Issued: 08/16/2011
  • Est. Priority Date: 11/17/2008
  • Status: Active Grant
First Claim
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1. An interlock system comprising:

  • a series interlock loop having an overall electrical characteristic comprising;

    a first safety interlock comprising a first switch coupled in parallel with a first impedance value;

    a second safety interlock electrically coupled in series with the first safety interlock, the second safety interlock comprising a second switch coupled in parallel with a second impedance value; and

    a control module communicatively coupled to a data table with values, and configured to receive an indication of the overall electrical characteristic and to compare the overall electrical characteristic to the values in the data table to thereby identify an open one of the first and second safety interlocks.

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