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Apparatus and method for detecting a deficiency of oil lubricating an electrically driven cutting blade of a haircutting machine

  • US 5,970,831 A
  • Filed: 01/27/1998
  • Issued: 10/26/1999
  • Est. Priority Date: 03/13/1997
  • Status: Expired due to Term
First Claim
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1. A method for detecting an oil deficiency of oil lubricating an electrically driven cutting blade in a haircutting machine having an electrical drive motor (M) driving the cutting blade, said method comprising the steps of measuring an electric current consumption (1) of the electrical drive motor and determining whether or not the electric current consumption (1) has increased above a predetermined standard electric current consumption occurring during normal operation without said oil deficiency.

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