Electric immersion heater assembly

Claim 1

AN IMMERSION HEATER FOR USE WITH WATER HEATER TANKS AND THE LIKE, COMPRISING A METALLIC MOUNTING PLATE HAVING AN OPENING THERETHROUGH, A SEALING GASKET OVERLYING A SURFACE OF SAID MOUNTING PLATE AND HAVING AN OPENING COINCIDING WITH SAID PLATE OPENING, A METAL-SHEATHED ELECTRIC HEATING ELEMENT HAVING TERMINAL AND ACTIVE HEATING PORTIONS, SAID ELEMENT PASSING THROUGH SAID PLATE AND GASKET OPENINGS, MEAN CONNECTING AND SEALING THE SHEATH OF SAID ELEMENTS TO SAID MOUNTING PLATE AND SEALING THE OPENING IN SAID GASKET AND FASTENING SAID GASKET TO SAID MOUNTING PLATE SURFACE, SAID MOUNTING PLATE BEING ADAPTED TO HOLD SAID HEATING ELEMENT TO A WALL OF SAID TANK WITH SAID ACTIVE HEATING PORTION EXTENDING FROM SAID MOUNTING PLATE SURFACE AND INTO SAID TANK AND WITH SAID TERMINAL PORTION EXTENDING FROM AN OPPOSITE SURFACE OF SAID MOUNTING PLATE, SAID MOUNTING PLATE BEING ADAPTED TO COMPRESS SAID GASKET AGAINST A TANK SURFACE SURROUNDING SAID WALL OPENING TO SEAL AGAINST LEAKAGE, AND SAID GASKET COVERING AND PROTECTING THAT PORTION OF SAID MOUNTING PLATE SURFACE WHICH OTHERWISE WOULD BE SUBJECTED TO DELECTERIOUS EFFECTS OF THE CONTAINER CONTENTS.