Patent ID: 8319159

Claim:
A panel for electric heating, comprised of a hermetically sealed container, comprising: a shell ( 1 ) having a substantially rectangular metallic base; a metallic cover ( 1 COP), inside which is an electric resistance in the shape of a substantially planar serpentine ( 2 ) formed of a series of U-shaped bends of highly conductive material, electrically insulated from the container by interposition of electrically insulating material ( 17 A, 17 B) in contact with the serpentine ( 2 ) and, respectively, with the shell ( 1 ) and cover ( 1 COP), minimizing the internal free spaces, the highly conductive material formed as a rigid bar ( 2 ), and ends of the rigid bar extend beyond the serpentine itself and widen to assume a pseudo-circular shape (TRA, TRB) for connection to means of contact ( 14 , 12 ) connectable to feed wires; and an hermetic contact module (MDC), inside which said means of contact ( 12 , 14 ) and said pseudo-circular endings (TRA, TRB) are housed, said means of contact being in communication with one end of said shell ( 1 ) and with said pseudo-circular endings (TRA, TRB) of said serpentine ( 2 ), wherein said means of contact ( 12 , 14 ) include two electrically conducting contact columns ( 12 ), hollow inside, for inserting and connecting a respective feed wire, screwed to a respective pseudo-circular ending (TRA, TRB) of said serpentine ( 2 ) with a circular base wider than a shank ( 14 ) of said means of contact.