Gas-impervious electrical feedthrough for use between two zones of differing pressures

Claim 1

A GAS-IMPERVIOUS, ELECTRICAL FEEDTHROUGH FOR EXTENSION BETWEEN TWO ZONES OF RESPECTIVELY DIFFERIG PRESSURES, SAID FEEDTHROUGH COMPRISING: A DRAWN, ELONGATED MOLYDBENUM FIRST MEMBER FOR CONDUCTING ELECTRICITY BETWEEN SADI TWO ZONES; SAID FIRST MEMBER HAVING A PAIR OF OPPOSITE ENDS AT LEAST ONE OF WHICH IS A FREE END FOR POSITIONING IN A RESPECTIVE ONE OF SAID TWO PRESSURE ZONES; SAID FIRST MEMBER HAVING ELONGATED MICROCRYSTALLINE GRAINS IN ITS MICROSTRUCTURE; A GAS-IMPERVIOUS, METALLIC MOUNTING MEMBER HAVING AN OPENING THROUGH WHICH SAID FIRST MEMBER EXTENDS; GLASS SEALING MEANS AT SAD OPENING, BETWEEN AND IN CONTACT WITH SAIF FIRST MEMBER AND SAID MOUNTING MEMBER, FOR PREVENTING A GAS LEAK THROUGH SAID OPENING AND FOR PROVIDING ELECTRICAL INSULATION BETWEEN THE FIRST MEMBERT AND THE MOUNTING MEMBER; A TENACIOUS OXIDE ON AT LEAST THOSE PORTIONS OF SAID FIRST MEMBER AND SAID MOUNTING MEMBER WHICH ARE IN CONTACT WITH AD GLASS SEALING MEANS; SAID FIRST MEMBER, SAID MOUNT MEMBER AND SAID GLASS SEALING MEANS HAVING THE SAME THERMAL EXPANSION CHARACTERISTICS; AND METALLIC SEALING MEANS FUSED AT SAID FREE END OF SAID FIRST MEMBER FOR PREVENTING GAS LEAKAGE LONGITUDINALLY THROUGH THE FIRST MEMBER AND THROUGH SAID FREE END; SAID FEEDTHROUGH BEING COMPOSED ENTIRELY ON NON-MAGNETIC MATERIAL.