Apparatus for refining molten metal
Patent 4040610 Issued on August 9, 1977. Estimated Expiration Date: 
August 9, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 9, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2223617 2385333 2393306 2510932 3655356 3743263 InventorAssigneeApplicationNo. 05/714669 filed on 08/16/1976US Classes:266/235, Having impeller means266/285With means allowing for expansionExaminersPrimary: Dost, Gerald A.Attorney, Agent or FirmAbstractA vessel adapted for maintaining metal in a molten state comprising, in combination:A. an insulating refractory shell impervious to molten metal;B. a lining for a major proportion of that interior surface of said shell, which will be below the surface of the melt, said lining comprising graphite or silicon carbide blocks, which are free to expand in at least one direction in response to the application of heat; andC. at least one heating means disposed within any of the blocks. | |
