The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 11, 2006
Filed:
May. 20, 2004
Felim P. Mccaffrey, Toronto, CA;
Blair Nakatsu, Dartmouth, CA;
Nils W. Voermann, Toronto, CA;
Maurizio Darini, Toronto, CA;
Sean Southall, Cambridge, CA;
Felim P. McCaffrey, Toronto, CA;
Blair Nakatsu, Dartmouth, CA;
Nils W. Voermann, Toronto, CA;
Maurizio Darini, Toronto, CA;
Sean Southall, Cambridge, CA;
Hatch, Ltd., Mississauga, CA;
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.