Patents by Inventor Akira Ohsumi

Akira Ohsumi 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 of controlling the operation of continuous casting and apparatus therefor
    Patent number: 5918662
    Abstract: A continuous-casting operation controlling method and apparatus in which: the molten-bath level of molten steel in a mold is detected in a period of from the time point just after the start of injection of the molten steel to the time point when the molten-bath level reaches a molten-bath level for the steady-state operation; and the quantity of discharge of the molten steel is controlled appropriately on the basis of the detected molten-bath level to thereby make it possible to start drawing-out of casting automatically. The molten-bath level is measured continuously by an electrode type molten-bath level meter, so that the molten-bath level ascending rate is obtained on the basis of the change of the molten-bath level. The flow rate of the molten steel discharged from a tundish is adjusted on the basis of the deviation of the molten-bath level ascending rate from a reference rate.
    Type: Grant
    Filed: October 8, 1996
    Date of Patent: July 6, 1999
    Assignee: NKK Corporation
    Inventors: Koichi Tezuka, Akio Nagamune, Hiroshi Maeda, Hiroaki Miyahara, Atsushi Ohta, Akira Ohsumi