Trim member assembly

Claim 1

IN A STAINLESS STEEL TRIM MEMBER HAVING AN EXPOSURE SURFACE OF STAINLESS DECORATIVE QUALITY AND AT LEAST ONE ATTACHMENT SURFACE DISPOSED TO BE SEATED IN ASSEMBLED CONTACT WITH A PAINTED FERROUS BASE BODY MEMBER THAT IS LESS NOBLE THAN STAINLESS STEEL, SAID ASSEMBLY BEING DISPOSED TO BE SUBJECTED TO NORMAL WEATHERING CORROSION CONDITIONS AND, WHEN SAID PAINT IS BROKEN IN THE VICINITY OF SAID ATTACHMENT SUFACE, TO GALVANIC REACTION BETWEEN SAID TRIM MEMBER AND SAID BODY MEMBER, THE IMPROVEMENT COMPRISING, AN ADHERENT ZINC COATING HAVING AN INITIAL THICKNESS OF FROM .000015 INCH TO .0001 INCH CARRIED BY AND CONTINUOUSLY DISTRIBUTED OVER SAID ATTACHMENT SURFACE, AND A THIN IN SITU CHEMICAL REACTION CONVERSION COATING EXTENDING OVER AND CARRIED BY SAID ZINC COATING WITHOUT INCREASING THE INITIAL THICKNESS OF SAID ZINC COATING, SAID CONVERSION COATING CONSTITUTING ONLY AMINOR PORTION OF THE INITIAL THICKNESS OF SAID ZINC COATING WHEREBY A CONTINUOUS ZINC COATING IS PRESENT BENEATH SAID CONVERSION COATING, SAID CONVERSION COATING BEING SUFFICIENTLY DENSE TO PREVENT DISSIPATION OF SAID ZINC COATIN G UNDER NORMAL WEATHERING CORROSION CONDITIONS ENCOUNTERED IN SERVICE AND HAVING A PERMEABLE STRUCTURE TO PERMIT A RETARDED SACRIFICIAL GALVANIC ATTACK OF SAID ZINC COATNG WHEN SAID BREAKS IN SAID PAINT APPEAR TO THEREBY PREVENT A GALVANIC ATTACK OF SAID BODY MEMBER AND THE FORMATION OF RED RUST THEREON IN THE VICINITY OF SAID TRIM MEMBER, SAID EXPOSURE SURFACE BEING SUBSTANTIALLY FREE OF SAID COATINGS.