×

Electronic identification system

  • US 4,798,175 A
  • Filed: 10/09/1986
  • Issued: 01/17/1989
  • Est. Priority Date: 10/09/1986
  • Status: Expired due to Term
First Claim
Patent Images

1. An electronic identification system for identifying an object moving through a portal structure comprising:

  • at least one generating means for generating a multi-directional electromagnetic field in a plurality of different angular relations to the direction of movement of the object through the portal structure;

    at least one first receiving means for attachment to the object for receiving and storing energy from the electromagnetic field;

    at least one transmission means for attachment to the object for transmitting identifying data after the at least one first receiving means has received energy from the electromagnetic field;

    at least one second receiving means for receiving the identifying data from the object; and

    a flexible curtain secured to the portal structure, wherein the at least one generating means and the at least one second receiving means comprise an antenna loop secured to the flexible curtain.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×