Patents by Inventor Frank S. Death

Frank S. Death has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for producing improved metal castings by pneumatically refining the melt
    Patent number: 4208206
    Abstract: Castings of superior surface quality and internal quality can be produced by:(1) transferring the melt from the furnace into a separate refining vessel provided with submerged tuyeres, and(2) refining the melt by (a) injecting into the melt through the tuyeres an oxygen-containing gas which may contain up to 90% of a dilution gas, and (b) thereafter injecting a sparging gas into the melt through the tuyeres.Preferably, the oxygen-containing gas is surrounded by an annular stream of a protective fluid. Argon is preferred for dilution, protection as well as sparging.
    Type: Grant
    Filed: August 7, 1978
    Date of Patent: June 17, 1980
    Assignee: Union Carbide Corporation
    Inventor: Frank S. Death