High capacity electric heater

Claim 1

A HIGH CAPACITY ELECTRIC HEATER FOR HEATING A CURRENT OF GASEOUS MEDIUM FLOWING THERETHROUGH, COMPRISING WALL MEANS DEFINING A CHANNEL THROUGH WHICH SAID CURRENT OF GASEOUS MEDIUM FLOWS AND AT LEAST ONE THIN FLAT STRIP OF CONDUCTIVE MATERIAL ARRANGED IN SAID CHANNEL, SAID STRIP BEING BENT IN A ZIGZAG FASHION TO FORM AN UNDULATING HEATING COIL THE PLANE OF WHICH EXTENDS AT RIGHT ANGLES TO THE FLOW OF SAID GASEOUS MEDIUM, THE PLANE OF SAID STRIP EXTENDING ESSENTIALLY AT RIGHT ANGLES TO SAID PLANE OF THE HEATING COIL AND ESSENTIALLY PARALLEL TO THE FLOW OF SAID CURRENT, SAID STRIP HAVING A PLURALITY OF BENDS THEREIN DEFINING DEFLECTION POINTS, SAID WALL MEANS INCLUDING ESSENTIALLY FLAT INNER AND OUTER MOUNTING ELEMENTS FOR SAID HEATING COIL DEFINING IN PART THE WALL OF SAID CHANNEL, THE INNER MOUNTING ELEMENT WITH RESPECT TO SAID CHANNEL HAVING A PLURALITY OF APERTURES THEREIN, SAID STRIP BEING SUPPORTED WITHIN EACH APERTURE IN SAID INNER ELEMENT WITH SAID DEFLECTION POINTS INSERTED THEREIN AND BEING SUPPORTED UPON SAID OUTER ELEMENT ADJACENT SAID APERTURES IN A FREELY SUSPENDED MANNER, WHEREBY SAID STRIP WILL ABSORB STATIC STRESSES, SAID HEATING COIL BEING SUPPORTED IN SAID CHANNEL ONLY AT SAID DEFLECTION POINTS, THE OUTER MOUNTING ELEMENT FORMING A COVER MEMBER FOR SAID INNER MOUNTING ELEMENT AND BEING SECURED TO SAID INNER ELEMENT IN CONTACT WITH PORTIONS OF SAID STRIP AT THE SAID DEFLECTION POINTS ADJACENT THE OUTER SIDE OF SAID INNER ELEMENT.