Industrial electric heating furnaces – Arc furnace device – Electrode support
Reexamination Certificate
2006-07-11
2006-07-11
Hoang, Tu (Department: 2832)
Industrial electric heating furnaces
Arc furnace device
Electrode support
C373S069000, C373S101000
Reexamination Certificate
active
07075966
ABSTRACT:
A system is disclosed for lowering (“slipping”) and/or raising (“back slipping”) electrodes relative to an electrode column. The system includes an electrode column having at least one slipping sleeve and a power clamp, each of which apply a radial clamping force to the electrode. The magnitudes of the clamping forces are selected such that application of a downwardly directed axial force on the one or more slipping sleeves, in combination with the weight of the electrode, are sufficient to overcome the resistive force of the power clamp, resulting in downward movement of the electrode without release of the clamping forces. Electrode columns having two movable slipping sleeves are also capable of raising the electrode relative to the furnace without release of the clamping forces.
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Darini Maurizio
McCaffrey Felim P.
Nakatsu Blair
Southall Sean
Voermann Nils W.
Hatch Ltd.
Hoang Tu
Kirkpatrick & Lockhart Nicholson & Graham LLP
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