Patents by Inventor Masayuki Aoshika

Masayuki Aoshika 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).

  • Patent number: 4434495
    Abstract: In the present invention, many cooling pipes are arranged horizontally at least in any one of the walls or roof of a furnace, to be fitted at the respective ends on both sides with supporting pipes provided outside the furnace, to let the cooling medium flow in one system for high cooling efficiency and long life. The cooling pipes may be arranged in ladder fashion or in a similar way, to keep the splash film stable, thereby preventing the decrease of the thermal efficiency of the furnace.
    Type: Grant
    Filed: May 21, 1982
    Date of Patent: February 28, 1984
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Fumio Tomizawa, Masayuki Aoshika
  • Patent number: 4021603
    Abstract: A roof assembly for an arc furnace is disclosed in which a furnace roof ring and a plurality of roof units are assembled together to define a roof section frustoconical in cross section and with a roof top opening, and a roof top made of an electrically insulating refractory and provided with electrode holes closely fitted into the roof top opening. Each sectionalized roof unit comprises a main body cast from cast iron or copper, and a cooling coil embedded in the main body with end sections being extended out of the upper major upper surface of the main body so as to be used as a cooling water inlet and an outlet. In order to ensure the satisfactory high-temperature strength and thermal-shock resistance, the inner major surface of the main body directed toward the inside of the furnace is partially lined with the refractory or corrugated.
    Type: Grant
    Filed: October 22, 1975
    Date of Patent: May 3, 1977
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Toshio Nanjyo, Masayuki Aoshika