Electric switch with longitudinally spaced terminals and a body of conductive fluid movable relative to said terminals

Claim 1

AN ELECTRIC SWITCH COMPRISING: (A) AN ELONGATED DIELECTRIC BODY HAVING A LONGITUDINAL BORE WITH TWO LONGITUDINALLY SPACED BORE ENLARGEMENTS LOCATED INWARD OF THE BODY ENDS, (B) AN ELECTRIC TERMINAL EXTENDING FROM SAID BODY IN REGISTER WITH EACH SAID BORE ENLARGEMENT, (C) AN ELONGATED DIELECTRIC STEM IN SAID BORE HAVING OPPOSITE ENDS IN SLIDING ENGAGEMENT WITH THE BORE AND PROVIDED WITH AN INTERMEDIATE PORTION OF SMALLER DIAMETRAL SIZE THAN THE BORE, THE LENGTH OF SAID SMALLER STEM PORTION APPROXIMATING THE DISTANCE BETWEEN THE OUTER SIDES OF THE BORE ENLARGEMENTS, (D) A QUANTITY OF CONDUCTIVE FLUID FILLING THE BORE AND ITS ENLARGEMENTS AROUND THE SMALLER PORTION OF THE STEM WHEN SAID STEM HAS ITS SMALL PORTION CENTERED WITH RESPECT TO THE BORE ENLARGEMENTS, ONE OF THE ENDS OF THE STEM SEPARATING A RING OF FLUID IN ONE BORE ENLARGEMENT FROM THE REMAINDER OF THE FLUID WHEN THE STEM AND BODY ARE RELATIVELY SHIFTED ENDWISE, AND (E) MEANS TO PLACE PRESSURE ON OPPOSITE ENDS OF THE QUANTITY OF FLUID IN THE FORMER POSITION OF THE STEM, AND ON THE SEPARATED PORTIONS OF THE FLUID IN THE LATTER POSITION OF THE STEM.