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Contactless signaling device

  • US 5,596,477 A
  • Filed: 05/03/1993
  • Issued: 01/21/1997
  • Est. Priority Date: 05/03/1993
  • Status: Expired due to Term
First Claim
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1. A signaling device comprising, in combination, a coil, an armature driven by said coil, a means for signaling adjacent said armature, said armature engaging said means for signaling, said armature including a shutter portion reciprocately movable along a predetermined path, a light source member and a light sensing member positioned on opposed sides of said predetermined path, a D.C. power source in communication with said light source, said light sensing member and said coil, whereby when the current to said coil is interrupted or resumed by the reciprocal movement of said shutter portion between said light source and said light sensing member said means for signaling is actuated.

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