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Detection plate having pin-shaped attachment means

  • US 4,847,592 A
  • Filed: 02/12/1988
  • Issued: 07/11/1989
  • Est. Priority Date: 06/14/1985
  • Status: Expired due to Fees
First Claim
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1. A detection plate formed as an earmark and comprising an electronic circuit capable of being activated by a suitable interrogation field to generate a pre-determined signal, said plate also having pin-shaped attachment means arranged so that the unauthorized detachment of the attachment means results in the interruption of an electrical conductor forming part of said electronic circuit, and said attachment means including a pin integral with the plate and having a point which can be pushed through an ear and fastened on the other side of the ear, said pin including a conductive loop extending into the point and connected to said electronic circuit.

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