Corrosion test probe

Claim 1

A CORROSION TEST PROBE ADAPTED TO BE POSITIONED IN A CORROSIVE ENVIROMENT, COMPRISING A TUBULAR HOUSING OF SOLID THIN GAGE STOCK HAVING A LONGITUDINAL BORE AND OPEN AT ONE END THEREOF, A FLUOROCARBON POLYMER SEALING PLUG MOUNTED IN SAID HOUSING AT SAID OPEN END THEREOF AND HAVING ITS OUTER PERIPHERAL SURFACE MATED TO THE SURFACE OF SAID BORE ABOUT SAID OPEN END OF SAID HOUSING, SAID SEALING PLUG BEING MAINTAINED IN COMPRESSIVE STRESS TO PROVIDE EXPANSION OF SAID PLUG TRANSVERSE TO SAID COMPRESSEIVE STRESS AND AGAINST THE INTERIOR WALLS OF SAID HOUSING WHEREBY THE PROVIDE A FLUID-TIGHT SEAL PERIPHERALLY OF SAID PLUG BETWEEN SAID BORE AND SAID CORROSIVE ENVIRONMENT, AND A UNITARY TESTING MEMBER SUPPORTED BY SAID SEALING PLUG AND EXTENDING THERETHROUGH IN A FLUID-TIGHT MANNER, SAID TESTING MEMBER HAVING A FIRST SECTION CONSTITUTING A SENSING ELEMENT LOCATED EXTERIORLY OF SAID HOUSING FOR EXPOSURE TO SAID CORROSIVE ENVIRONMENT, SAID FIRST SECTION OF SAID TESTING MEMBER HAVING A PAIR OF LEGS JUXTAPOSED TO ONE ANOTHER WITH ONE OF SAID LES BEING COMTAPOSED TO ONE ANOTHER WITH ONE OF SAID LEGS BEING COMPLETELY STRAIGHT AND THE OTHER OF SAID LEGS BEING STRAIGHT FROM THE FREE END THEREOF TO AN INTERMEDIATE POINT AND SPIRALED ABOUT SAID ONE LEG FROM SAID INTERMEDIATE POINT TO THE JUNCTUREE OF SAID LEGS, SAID ONE LEG AND THE STRAIGHT PART OF SAID OTHER LEG EXTENDING THROUGH SAID SEALING PLUG TO A PREDETERMINED DISTANCE BEYOND THE INNER END SURFACE OF THE LATTER WITHIN SAID BORE, AND A SECOND SECTION CONSTITUTING A REFERENCE ELEMENT LOCATED COMPLETELY WITHIN THE CONFINES OF SAID BORE AND PROTECTED FROM SAID CORROSIVE ENVIRONMENT, SAID SECOND SECTION OF SAID TESTING MEMBER BEING AN INTEGRAL EXTENSION OF SAID ONE LEG OF SAID FIRST SECTION AND BEIG PARTLY STRAIGHT AND PARTLY DEFORMED INTO A SPIRAL.