Liquid immersed rectifier assembly

Claim 1

A TANK FOR HOUSING ELECTRICAL EQUIPMENT, SAID TANK COMPRISING: A MAIN DOME SECTION INCLUDING UPSTANDING SIDE WALLS AND AN ENLARGED FLANGE EXTENDING TRANSVERSE THERETO THEREABOUT, THE CROSS-SECTIONAL AREA DEFINED WITHIN SAID UPSTANDING SIDE WALLS BEING LESS THAN THE TOTAL AREA DEFINED WITHIN SAID UPSTANDING SIDE WALLS PLUS THE AREA OF SAID FLANGE; A FLEXIBLE WALL SECURED TO SAID FLANGE AT ITS OUTERMOST PERIPHERY TO DEFINE A COMPLETELY SEALED VOLUME, SAID VOLUME BEING FILLED WITH FLUID, SAID FLEXIBLE WALL LYING IN A PLANE WHICH IS PARALLEL TO SAID FLANGE BUT SPACED THEREFROM SUCH THAT AN AREA OF SAID FLEXIBLE WALL WHICH IS EQUAL TO SAID TOTAL AREA WILL BE EXPOSED TO SAID FLUID; WHEREBY SAID FLEXIBLE WALL WILL EXPERIENCE LESS MOVEMENT IN COMPENSATING FOR A GIVEN VOLUMETRIC CHANGE IN SAID VOLUME IN RESPONSE TO EXPANSION OR CONTRACTION OF SAID FLUID THAN IF THE AREA OF SAID FLEXIBLE WALL WHICH WERE EXPOSED TO SAID FLUID WERE EQUAL TO SAID AREA DEFINED WITHIN SAID UPSTANDING SIDE WALLS.