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Package and mail delivery system

  • US 5,971,587 A
  • Filed: 08/01/1997
  • Issued: 10/26/1999
  • Est. Priority Date: 08/01/1997
  • Status: Expired due to Fees
First Claim
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1. A method for tracking items in a package delivery system, comprising:

  • writing into a plurality of storage labels, said labels having transmitters, each of the labels associated with an item, information concerning delivery of the items, said information useful for automated sorting and tracking the items along their passage to destinations;

    transporting the items and their associated labels;

    applying query signals to the labels to retrieve the information and to cause said labels to provide said information through their transmitters, wherein said transmitters are caused to be powered by means of energy of the query signals received by the labels in transmitting said information;

    sorting the items by means of the information retrieved; and

    delivering the sorted items to destinations.

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