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Remote meter reading system

  • US 3,083,357 A
  • Filed: 11/29/1961
  • Issued: 03/26/1963
  • Est. Priority Date: 11/29/1961
  • Status: Expired due to Term
First Claim
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1. IN A TELEMETERING SYSTEM APPARATUS FOR TRANSLATING THE ANGLE OF ROTATION OF EACH OF A PLURALITY OF SHAFTS INTO AN ELECTRICAL SIGNAL COMPRISING, IN COMBINATION, A PLURALITY OF DISK MEMBERS EACH HAVING A SURFACE DIVIDED INTO AREAS OF RELATIVELY HIGH AND RELATIVELY LOW LIGHT REFLECTIVITY, EACH OF SAID DISKS BEING MOUNTED IN FIXED AXIAL RELATION FOR ROTATION BY A RESPECTIVE ONE OF SAID SHAFTS, A LIGHT BEAM SOURCE, MEANS FOR SCANNING THE SURFACE OF EACH OF SAID DISKS WITH SAID BEAM THEREBY TO GENERATE A PATTERN OF REFLECTED LIGHT VARYING IN INTENSITY IN ACCORDANCE WITH SAID AREAS AND HENCE IN ACCORDANCE WITH THE ANGLE OF ROTATION OF EACH OF SAID SHAFTS, AND MEANS RESPONSIVE TO SAID REFLECTED LIGHT FOR GENERATING AN ELECTRICAL SIGNAL OF CORRESPONDINGLY VARYING MAGNITUDE.

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