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Fault protection system for a respiratory conduit heater element

  • US 6,598,604 B1
  • Filed: 12/15/1999
  • Issued: 07/29/2003
  • Est. Priority Date: 12/23/1998
  • Status: Expired due to Term
First Claim
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1. A fault protection system adapted for use with a heater element comprising:

  • detecting means which include means to detect a rapid change in current in said heater element, current interruptor means adapted to be in series with said heater element, and timing means configured to activate said current interruptor means to interrupt the current in the heater element when said rapid change in current exceeds a first predetermined threshold.

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