Industrial electric heating furnaces – Arc furnace device – Electrode
Reexamination Certificate
2005-08-02
2005-08-02
Hoang, Tu (Department: 3742)
Industrial electric heating furnaces
Arc furnace device
Electrode
C373S091000, C403S292000
Reexamination Certificate
active
06925104
ABSTRACT:
Electrode columns made from carbon and graphite are screwed together from individual elements, for example, the electrodes and nipples. The elements have directionally structured contact surfaces. Such a structure of the contact surfaces gives rise to the elements of a column demonstrating increased resistance to loosening after intensive machine screwing or screwing applied by hand, which, therefore, is often inadequate, whereby a higher level of operational reliability is achieved, in particular, in the case of electrode columns that are screwed together by hand.
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Baumann Stefan
Wimmer Karl
Greenberg Laurence A.
Hoang Tu
Locher Ralph E.
SGL Carbon AG
Stemer Werner H.
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