Switch block

Claim 1

IN COMBINATION: A SWITCH BLOCK COMPRISING AN ENCAPSULATING BODY, FOUR RANKS OF SPACED-APART CONDUCTIVE BARS INSIDE SAID BODY, THE BARS OF EACH RANK LYING IN A SINGLE RESPECTIVE PLANE, THE PLANES BEING PARALLEL TO SAID SPACED APART FROM EACH OTHER, THE BARS OF THE FIRST AND SECOND RANKS BEING PARALLEL TO EACH OTHER, THE BARS OF THE THIRD AND FOURTH RANKS BEING PARALLEL TO EACH OTHER, AND PERPENDICULAR TO THE BARS OF THE FIRST AND SECOND RANKS IN PLAN VIEW, THE BARS OF THE FIRST AND SECOND RANK OVERLYING EACH OTHER IN PLAN VIEW, AND THE BARS OF THE THIRD AND FOURTH RANKS OVERLYING EACH OTHER IN PLAN VIEW, WHEREBY THE FOUR RANKS INTERSECT EACH OTHER IN PLAN VIEW AT INTERSECTIONS WHICH LIE ON A NORNAL TO ANY OF THE SAID PLANES, SAID INTERSECTIONS LYING WITHIN A SWITCHING REGION SAID FIRST AND SECOND, AND THIRD AND FOURTH RANKS OF BARS EXTENDING BEYOND THE SWITCHING REGION TO RESPECTIVE ACCESS REGIONS OUTSIDE THE SWITCHING REGION, WIRE ACCESS MEANS TO EACHBAR AT THE RECESS REGION WHEREBY A WIRE MAY BE CONNECTED TO ANY SELECTED BAR, A PIN ACCESS MEANS THROUGH THE BLOCK AND THE BARS AT EACH INTERSECTION TO PROVIDE ACCESS FOR INTERCONNECTION BETWEEN RANKS AT ANY SELECTED INTERSECTION; AND SWITCH PIN MEANS INSERTABLE IN SAID PIN ACCESS MEANS ADAPTED TO INTERCONNECTED A BAR OF THE FIRST AND THIRD RANKS AND A BAR OF THE SECOND AND FOURTH RANK AT A SELECTED INTERSECTION, THE BODY ENCAPSULATING THE BARS AND BEING CONTINUOUS AND FREE OF DISCONTINUITIES WITHIN ITS OWN STRUCTURE; AND SEAL MEANS FOR FORMING AN ENVIRONMENTAL SEAL BETWEEN THE SWITCH PIN MEANS AND THE PIN ACCESS MEANS.