公开(公告)号：US3575834A

公开(公告)日：1971-04-20

申请号：US3575834D

申请日：1968-04-12

Applicant: BECKMAN INSTRUMENTS INC

Inventor： HOOLE DUANE W ,  KLEIN GERALD L ,  VIVIAN TERRY R

IPC: G01N27/28 ,  G01N27/401 ,  G01N27/46

CPC classification number: G01N27/28 ,  G01N27/401

Abstract: LIQUID JUNCTION STRUCTURES FOR PLASTIC ELECTROCHEMICAL ELECTRODES AND METHODS OF MANUFACTURING THE SAME ARE DISCLOSED. ONE EMBODIMENT COMPRISES A TUBE OF PLASTIC HAVING AN OPEN END WITH AN ION SENSITIVE STRUCTURE MOUNTED THEREIN. A SMALL LONGITUDINAL CHANNEL IS FORMED IN THE TUBE WHICH EXTENDS FROM THE OPEN END PAST THE MEMBRANE TO OPEN INTO THE INTERIOR OF THE TUBE. A BUNDLE OF FIBERS IS POSITIONED IN THE CHANNEL COVERED BY A SLEEVE OF INJECTION MOLDED PLASTIC FOR COMPACTING AND RESTRAINING THE FIBERS. THE EMBODIMENT ENABLES A PLANAR SENSING SURFACE FOR A PLASTIC COMBINATION ELECTRODE. ANOTHER EMBODIMENT COMPRISES A TUBE HVING AN EXTENDED LIP PORTION SURROUNDING AN OPENING AND A SHRINK TUBE SURROUNDING THE LIP PORTION. A BUNDLE OF FIBERS IS POSITIONED IN THE OPENING; THEREAFTER THE LIP PORTION AND THE SHRINK TUBE ARE HEATED TO MELT AND CONTRACT THE LIP PORTION AND THE SHRINK TUBE RESPECTIVELY ABOUT THE FIBERS.