Industrial electric heating furnaces inventions 06/07

20070147462 - Rapid heating and cooling furnace: The invention includes a furnace having a rapid heating and cooling cycle. The rapid heating is achieved by any suitable process, such as induction heating. The cooling is achieved by recirculating a working fluid through a heat exchanger that is outside the furnace. The working fluid is moved using a... Agent: Hiscock & Barclay, LLP

20070147463 - Cold crucible induction furnace with eddy current damping: Apparatus and method are provided for damping the induced fluid flow, particularly in the region of the base plate, in an electrically conductive material that is heated and melted in a cold crucible induction furnace. Damping is accomplished by establishing a dc magnetic field such that flow of the electrically... Agent: Philip O. Post Indel, Inc.

20070133651 - Method for controlling foaming of slag in an electric arc furnace: A method for controlling the foaming of slag in an electric arc furnace is disclosed. The furnace comprises at least one electrode column. Current is applied to the electrode column, causing an arc to form between the tip of the electrode column and the scrap, melting the scrap. Impurities in... Agent: Waddey & Patterson, P.C.

20070127540 - End-face seal for male-female electrode joints: A male-female electrode joint is presented, the joint including two joined graphite electrodes having blocked threads and having a seal interposed between the electrodes, the seal composed of a material having an oxidation rate equal to or less than that of the electrodes.... Agent: Waddey & Patterson, P.C.

20070127541 - Locking ring for graphite electrodes: An electrode joint is presented, the joint including two joined graphite electrodes having blocked threads and having a locking ring interposed between the electrodes, the locking ring composed of a material having a coefficient of friction such that the tendency of the electrode joint to unscrew is retarded.... Agent: Waddey & Patterson, P.C.

20070127542 - Induction coil having internal and external faradic rings: An induction furnace includes a pair of induction coils with a pair of faraday rings disposed between the induction coils to substantially prevent mutual inductance between the first and second induction coils. The induction coils preferably have a different size circumference and may be coplanar. The prevention of mutual inductance... Agent: Sand & Sebolt