ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,560,461, issued on Feb. 24.
"Rolled material end edge detector" was invented by John R. Ellis (Arlington, Mass.), Vitaly Tsukanov (Lviv, Ukraine) and Yura Bashtyk (Lviv, Ukraine).
According to the abstract* released by the U.S. Patent & Trademark Office: "An end edge detector and method for sensing and indicating an end edge along a roll of material. A sensor retained by a housing detects the end edge and triggers an output signal indicative thereof. The sensor can be formed by a light source for producing an illuminated area on the roll of material in combination with a light radiation detector. Light received by the radiation detector is processed to produce an electronic control s...