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Self-service distribution system

  • US 4,676,343 A
  • Filed: 07/09/1984
  • Issued: 06/30/1987
  • Est. Priority Date: 07/09/1984
  • Status: Expired due to Term
First Claim
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1. A system for processing an article selected for purchase comprising:

  • (a) conveyor means for receipt and transport of such article;

    (b) means providing a security zone extending along at least a portion of said conveyor means;

    (c) sensing means at an inlet to said security zone, said sensing means comprising a first article characteristic sensing means and a second article prescence sensing means, said first sensing means being positioned upstream of said second article sensing means with respect to the conveyor means, said sensing means generating output signals, each indicative of an entry through said inlet into said security zone; and

    (d) control means for selective movement of said conveyor means in article acceptance and article rejection senses, said control means being operable for continuance of movement of said conveyor means in article acceptance sense upon occurrence of a first sensing means output signal and for moving said conveyor means in article rejection sense in response to occurrence of another of said first sensing means output signals.

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