Patents by Inventor Hideo Sagara

Hideo Sagara 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 underwater welding
    Patent number: 4052632
    Abstract: The invention relates to a welding torch for welding underwater and to a method of underwater welding using the welding torch. A high speed stream of water is directed from a nozzle on the welding torch obliquely onto a member or members to be welded to form a flared-out curtain of water. Gas is injected into the volume enclosed by the curtain of water to create a gaseous atmosphere and welding is carried out in the gaseous atmosphere.
    Type: Grant
    Filed: August 12, 1974
    Date of Patent: October 4, 1977
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Hideo Sagara, Yasuhiro Nishio, Hirokazu Wada, Yoshinori Hiromoto
  • Welding torch for underwater welding
    Patent number: 4029930
    Abstract: The invention relates to a welding torch for welding underwater and to a method of underwater welding using the welding torch. A high speed stream of water is directed from a nozzle on the welding torch obliquely onto a member or members to be welded to form a flared-out curtain of water. Gas is injected into the volume enclosed by the curtain of water to create a gaseous atmosphere and welding is carried out in the gaseous atmosphere.
    Type: Grant
    Filed: August 2, 1973
    Date of Patent: June 14, 1977
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Hideo Sagara, Yasuhiro Nishio, Hirokazu Wada, Yoshinori Hiromoto