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Electronic counting scale

  • US 4,219,089 A
  • Filed: 10/06/1978
  • Issued: 08/26/1980
  • Est. Priority Date: 10/06/1978
  • Status: Expired due to Term
First Claim
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1. A counting scale for determining and indicating the number of articles in a collection of substantially identical said articles;

  • comprising in combination;

    a weighing platform for receiving said collection of articles;

    load cell means actuated by said platform for generating an analog signal indicative of the force exerted on said platform by said collection of articles;

    A-to-D conversion means for receiving said analog signal, and converting same to a digital signal indicative of said force, and thereby of the number of articles in said collection;

    means for generating and storing a digital signal indicative of the tare weight acting at said load cell;

    means for subtracting said signal indicative of the said tare weight from said signal indicative of the number of articles in said collection, to thereby normalize said latter digital signal;

    means for generating and storing a digital signal indicative of the weight per unit article of a predetermined size group of said articles;

    means for dividing said normalized digital signal by said stored weight per unit value to determine the said number of articles;

    means for displaying the thereby determined number of said articles; and

    manually actuatable means for periodically updating said stored value for said weight per unit article to reflect the number of articles on said platform at the time of effecting said updating, said means being operable to effect said updating for any accumulated number of said articles.

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