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Power tool safety mechanisms

  • US 20040226424A1
  • Filed: 01/08/2004
  • Published: 11/18/2004
  • Est. Priority Date: 07/11/2001
  • Status: Active Grant
First Claim
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1. A method for detecting the position of a safety guard relative to an active portion of a woodworking machine comprising:

  • establishing a predetermined safe operating position of the safety guard;

    positioning a first electrical contact on the safety guard;

    positioning a second electrical contact on a portion of the woodworking machine;

    transmitting an electrical signal from said first electrical contact, said second electrical contact receiving said electrical signal only when the safety guard is in said safe operating position; and

    activating a protective operation when said signal is not received by said second electrical contact.

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