Patents by Inventor Tateo Miyazaki

Tateo Miyazaki 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 reducing welding distortion in one side welding for joining plates
    Patent number: 5550347
    Abstract: The present invention relates to a method of reducing an amount of welding deformation in the case where steel plates to be welded are butted and subjected to tack-welding and then the tack-welded portion is subjected to one side welding for joining the plates.In the present invention, not less than 3 welding electrodes are used and a welding condition is determined so that the parameter P shown by the expression of ##EQU1## can be a predetermined value. In this case, Qi is the heat input of each electrode determined by a current, voltage and speed, and Li is a distance from the first electrode to each electrode, and H is the maximum value of the height of a tack-welded bead, wherein the height H is made to be a value not more than half of the wall thickness of the steel plates to be welded.
    Type: Grant
    Filed: October 28, 1994
    Date of Patent: August 27, 1996
    Assignees: Nippon Steel Corporation, Hitachi Zosen Corporation
    Inventors: Tadashi Kasuya, Koichi Shinada, Yukihiko Horii, Tateo Miyazaki