Classifying and sorting by density

Claim 1

IN A SYSTEM FOR CLASSIFYING AND SORTING PRODUCTS ACCORDING TO THEIR DENSITY CHARACTERISTICS INCLUDING MEANS FOR CONVEYING PRODUCTS AT CONSTANT SPEED ALONG A PREDETERMINED PATH EXTENDING SUCCESSIVELY ADJACENT AN INSPECTION STATION, A DEFECTIVE PRODUCT COLLECTION POINT, AND AN ACCEPTABLE PRODUCT COLLECTION POINT, EJECTION MEANS DISPOSED ADJACENT SAID DEFECTIVE PRODUCT COLLECTION POINT FOR DELIVERING SAID PRODUCTS FROM THE CONVEYING MEANS THERETO IN RESPONSE TO ACTUATION, AND MEANS DISPOSED ADJACENT SAID ACCEPTABLE PRODUCT COLLECTION POINT FOR DELIVERING SAID PRODUCTS FROM THE CONVEYING MEANS TO THE ACCEPTABLE PRODUCT COLLECTION POINT AS THE PRODUCTS ARE CONVEYED ADJACENT SAME, A CLASSIFIER COMPRISING MEANS DISPOSED AT SAID INSPECTION STATION FOR DIRECTING A BEAM OF LOW ENERGY RADIATION TRANSVERSE TO SAID PATH INTO IMPINGEMENT WITH SAID PRODUCTS CONVEYED THEREALONG, DETECTOR MEANS DISPOSED AT SAID INSPECTION STATION FOR RECEIVING SAID BEAM SUBSEQUENT TO PENETRATION OF SAID PRODUCTS AND GENERATING AN ELECTRICAL INSPECTION SIGNAL PROPORTIONAL TO THE ENERGY OF SAID BEAM, SAID SIGNAL INCLUDING PULSES HAVING HEIGHTS PROPORTIONAL TO THE ATTENTUATION OF SAID BEAM BY SAID PRODUCTS AND WIDTHS PROPORTIONAL TO THE DIMENSION OF SAID PRODUCTS TRANSVERSE TO SAID BEAM, NORMALIZING MEANS COUPLED TO SAID DETECTOR MEANS FOR GENERATING A HEIGHT SIGNAL HAVING A MAGNITUDE PROPORTIONAL TO A NORMALIZED PEAK HEIGHT OF EACH OF SAID PULSES AND A WIDTH SIGNAL HAVING A MAGNITUDE PROPORTIONAL TO A NORMALIZED WIDTH OF EACH OF SAID PULSES, DIFFERENTIAL COMPARISON MEANS COUPLED TO SAID NORMALIZING MEANS FOR COMPARING THE MAGNITUDES OF SAID HEIGHT AND WIDTH SIGNALS AND GENERATING AN EJECT PULSE IN REPONSE TO THE FORMER EXCEEDING THE LATTER, AND MEANS COUPLING SAID COMPARISON MEANS TO SAID EJECTION MEANS FOR ACTUATING SAME IN RESPONSE TO SAID EJECT PULSES.