ES320207A1 - Improvements introduced in electrical heating elements. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Improvements introduced in electric heating elements, essentially characterized in that it comprises, on a support, a heat resistance constituted from a resistant wire that originally appears in the form of a continuous helical loop, carried the said support, at least two plates spaced parallels of refractory insulating material between which the resistance is disposed along a continuous sinuous path alternately going from one plate to the other and comprising a series of helically wound pieces oriented transversely to the plates and separated by intermediate areas of fastening in which spirals of the thread are suppressed and pass over spaced teeth, directed laterally, carrying the plates; These teeth have restraining means prepared to keep the intermediate areas of support thereon, that is to say, to retain the ends of the helical pieces in the notches or recesses formed on either side of the teeth, characterized in that the recesses that the teeth are wide enough to receive freely under their helical form the ends of the resistant thread loops, which thus extend to the level of the outer face of the plate; the retention means carrying the tooth are constituted by a guide installed on the external face of the same and goes from one recess to another following a path inclined with respect to the axis of the plate and corresponding to the natural path of the thread in the area of subject . (Machine-translation by Google Translate, not legally binding)