Electric heater assemblies

Claim 1

AN ELECTRIC HEATER ASSEMBLY COMPRISING AN ELONGATED HOUSING HAVING A LONGITUDINALLY EXTENDING INTERMEDIATE PORTION WITH INTEGRAL, LONGITUDINALLY EXTENDING, OPPOSED MARGINAL PORTIONS JOINED THERETO BY RESPECTIVE INTEGRAL, LONGITUDINALLY EXTENDING CONNECTION PORTIONS, SAID HOUSING MARGINAL PORTIONS BEING DISPOSED ON THE SAME SIDE OF SAID HOUSING INTERMEDIATE PORTION AND EXTENDING TOWARD BUT BEING SEPARATED FROM EACH OTHER TO PROVIDE THEREBETWEEN A LONGITUDINALLY EXTENDING OPENING IN SAID HOUSING AND SAID HOUSING CONNECTING PORTIONS BEING SEPARATED BY SAID HOUSING INTERMEDIATE PORTION AND IN TURN SEPARATING THE LATTER FROM SAID HOUSING MARGINAL PORTIONS, AN ELONGATED CLOSURE MEMBER WITHIN SAID HOUSING AND CLOSING SAID HOUSING OPENING, SAID CLOSURE MEMBER BEING SHORTER THAN SAID HOUSING AND HAVING A LONGITUDINALLY EXTENDING INTERMEDIATE PORTION AND INTEGRAL, LONGITUDINALLY EXTENDING OPPOSED MARGINAL PORTIONS PROJECTING TRANSVERSELY OF AND TO ONE SIDE OF SAID CLOSURE MEMBER INTERMEDIATE PORTION AND SAID CLOSURE MEMBER MARGINAL PORTIONS HAVING LONGITUDINAL SLIDING ENGAGEMENT WITH RESPECTIVE HOUSING MARGINAL PORTIONS FOR ASSEMBLY PURPOSES AND SAID CLOSURE MEMBER MARGINAL PORTIONS SPACING SAID CLOSURE MEMBER INTERMEDIATE PORTION FROM SAID HOUSING MARGINAL PORTIONS AND SAID HOUSING INTERMEDIATE PORTION, END CLOSURE MEMBERS REMOVABLY DISPOSED WITHIN SAID HOUSING AT RESPECTIVE ENDS THEREOF AND LIMITING RELATIVE LONGITUDINAL MOVEMENT BETWEEN SAID HOUSING AND SAID CLOSURE MEMBER BY ABUTMENT WITH RESPECTIVE ENDS OF THE LATTER, EACH END CLOSURE MEMBER HAVING A PAIR OF WALLS SPACED LONGITUDINALLY OF SAID HOUSING AND FACING WALLS OF RESPECTIVE END CLOSURE MEMBERS EACH HAVING AN APERTURE FORMED THEREIN, AND AN ELONGATED, TUBULAR SHEATHED ELECTRIC RESISTANCE HEATING ELEMENT OF A LENGTH GREATER THAN SAID CLOSURE MEMBER BUT LESS THAN SAID HOUSING, SAID ELEMENT BEING DISPOSED BETWEEN AND IN SPACED RELATION FROM SAID CLOSURE MEMBER AND HOUSING INTERMEDIATE PORTIONS AND SUCH ELEMENT HAVING A PORTION INTERMEDIATE ITS ENDS SECURED TO SAID HOUSING CLOSURE MEMBER AND RESPECTIVE END PORTIONS SLIDABLY PROJECTING THROUGH THE APERTURES IN RESPECTIVE END CLOSURE MEMBER WALLS AND TERMINATING BETWEEN THE SPACED WALLS AFORESAID OF RESPECTIVE END CLOSURE MEMBERS.