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Method and means for randomly selecting a plurality of groups of numbers

  • US 4,674,748 A
  • Filed: 03/20/1986
  • Issued: 06/23/1987
  • Est. Priority Date: 03/20/1986
  • Status: Expired due to Fees
First Claim
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1. A device for randomly selecting a plurality of groups of numbers comprising:

  • a circular outer disc having a circumferential outer disc ring marked into a predetermined number n of equally sized outer disc ring segments;

    a circular middle disc having a diameter less than said outer disc and being arranged concentrically with respect to said outer disc so as to leave said outer disc ring exposed radially beyond said middle disc,said middle disc having a plurality of concentrically arranged middle disc rings marked thereon, each of said middle disc rings being marked and subdivided into said predetermined number n of equally sized middle disc ring segments, said middle disc ring segments also being arranged in said predetermined number n of radially extending middle disc columns progressing from the innermost radial one of said middle disc rings to the outermost radial one of said middle disc rings;

    a circular inner disc having a diameter less than said middle disc and being arranged concentrically with respect to said middle disc so as to expose said plurality of middle disc rings to view radially outwardly from said inner disc;

    said inner disc having a circumferential inner disc ring marked into said predetermined number n of equally sized inner disc ring segments;

    means rotatably mounting said outer, middle and inner discs to one another for rotation about a common axis coincident with the circular centers thereof;

    each of said outer disc ring segments, said middle disc ring segments, and said inner disc ring segments having numerical indicia marked thereon, said numerical indicia corresponding to numbers selected from 1 to n;

    a plurality of marker members;

    securing means on said inner disc for detachably securing each of said marker members adjacent randomly selected ones of said inner disc ring segments.

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