×

Dual sensor scanner for measuring weight of paper and related sheet products

  • US 5,099,118 A
  • Filed: 05/30/1991
  • Issued: 03/24/1992
  • Est. Priority Date: 05/30/1991
  • Status: Expired due to Fees
First Claim
Patent Images

1. Apparatus for measuring the weight of a material, comprising:

  • an optical sensor for sensing light shining through a material web portion and generating therefrom a first signal indicative of the weight;

    a nuclear sensor mounted adjacent to the optical sensor for sensing particles passing through the material web portion and generating therefrom a second signal indicative of the weight; and

    calibrating circuitry for calibrating the optical sensor signal to the nuclear sensor signal as the sensors sense the weight of the same portion of the material web.

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