Document Type and Number:
Japanese Patent JPS6340879
Kind Code:
Y2
Abstract:
A heater which includes: at least two electrically conductive heating element units having generally a self-standing cylindrical shape and stacked one on another to define a series of at least two cylindrical heating zones, the heating element units each including of a grid-like structure alternately having a vertically disposed portion and a horizontally extending bridge portion; insulator blocks fitted on the ends of stacked upper and lower cylindrical heating element units which meet and which are made of a material having a sufficient electric resistance that will not conduct electric current at a maximum operating temperature of the heating element units; and an annular shaped connector conforming with the ends of the upper and lower heating element units which meet and which is interposed between the insulating blocks on the ends which meet to provide a mechanical connection between the stacked upper and lower heating element units.
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Application Number:
JP16180681U
Publication Date:
October 25, 1988
Filing Date:
October 28, 1981
Export Citation:
International Classes:
B22F3/15; F27B5/14; F27B17/00; H05B3/14; H05B3/62; H05B3/64; (IPC1-7): H05B3/62; H05B3/14